This document provides a do-it-yourself guide to sealing air leaks and adding attic insulation in homes. It discusses locating common air leaks in attics, such as around kneewalls, dropped soffits, and chimneys/flues. The guide provides step-by-step instructions for sealing these leaks using materials like caulk, spray foam, and insulation. Special care must be taken when sealing around chimneys/flues due to fire safety codes. With proper planning and safety precautions, homeowners can seal air leaks and add attic insulation to increase home comfort and energy efficiency.
This newsletter provides homeowners with tips for spring home maintenance and repair. It recommends cleaning gutters, checking flashing and seals around windows and doors, inspecting the roof and attic for issues, and ensuring downspouts move water away from the foundation. It also discusses upcoming home decor trends focusing on vintage styles and bold colors. National garden month and Earth day events in April are noted. The newsletter is an advertisement for a home warranty company.
This document discusses various energy efficiency solutions provided by EPIC Building Solutions including radiant barrier foil, radiant barrier spray, attic insulation, lighting options, available rebates, and energy efficiency programs. EPIC offers packages to attach radiant barrier foil, add attic insulation, and replace light bulbs, as well as benefits such as reduced electricity usage paying for the upgrades and increased home value.
The document discusses tile murals created by artist El-Notan Abramov through his company LMT Tile Murals. It states that El-Notan combines his experience in European art with a modern vision to create murals that integrate organically into contemporary home environments. The document provides images and descriptions of 10 abstract murals and 12 kitchen mural designs by LMT Tile Murals that use texture, color and natural themes.
1. The document discusses Social Enterprises for Learning (SEfL) as a work-based learning and internship preparation strategy that integrates literacy and 21st century skills.
2. SEfL projects provide authentic learning opportunities that are social, entrepreneurial, and help students develop specified knowledge and skills applicable to various career themes.
3. The San Francisco Unified School District has adopted SEfL to better prepare students for high-quality internships by developing enterprise project ideas and working with clients.
The document describes projects used at Spruce Creek High School to teach business and finance basics using real-world applications. It outlines several projects focused on topics like careers, employment documents, etiquette, inventory management, and yard sales. Each project includes pre-reading, reading, writing, and math activities connected to the topic. For example, the "Take Stock in your Future" project uses Donald Trump as a role model and has students research careers in finance. The projects are designed to develop both academic and essential life skills.
There are four types of sentences: declarative, interrogative, exclamatory, and imperative. Declarative sentences make statements and end with a period. Interrogative sentences ask questions and end with a question mark. Exclamatory sentences show strong feeling and end with an exclamation point. Imperative sentences give commands and end with a period. The document then provides examples of each type of sentence and a practice section for readers to identify sentence types.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, boost mood, and enhance cognitive function. Staying physically active for at least 30 minutes each day is recommended for significant health benefits.
IELTS ACADEMIC TASK 1: How to describe a line graphBen Worthington
Full tutorial on how to describe a line graph for IELTS academic Task 1.
Presentation includes vocabulary, set phrases, verbs, and instructions to write a structured high scoring response.
This newsletter provides homeowners with tips for spring home maintenance and repair. It recommends cleaning gutters, checking flashing and seals around windows and doors, inspecting the roof and attic for issues, and ensuring downspouts move water away from the foundation. It also discusses upcoming home decor trends focusing on vintage styles and bold colors. National garden month and Earth day events in April are noted. The newsletter is an advertisement for a home warranty company.
This document discusses various energy efficiency solutions provided by EPIC Building Solutions including radiant barrier foil, radiant barrier spray, attic insulation, lighting options, available rebates, and energy efficiency programs. EPIC offers packages to attach radiant barrier foil, add attic insulation, and replace light bulbs, as well as benefits such as reduced electricity usage paying for the upgrades and increased home value.
The document discusses tile murals created by artist El-Notan Abramov through his company LMT Tile Murals. It states that El-Notan combines his experience in European art with a modern vision to create murals that integrate organically into contemporary home environments. The document provides images and descriptions of 10 abstract murals and 12 kitchen mural designs by LMT Tile Murals that use texture, color and natural themes.
1. The document discusses Social Enterprises for Learning (SEfL) as a work-based learning and internship preparation strategy that integrates literacy and 21st century skills.
2. SEfL projects provide authentic learning opportunities that are social, entrepreneurial, and help students develop specified knowledge and skills applicable to various career themes.
3. The San Francisco Unified School District has adopted SEfL to better prepare students for high-quality internships by developing enterprise project ideas and working with clients.
The document describes projects used at Spruce Creek High School to teach business and finance basics using real-world applications. It outlines several projects focused on topics like careers, employment documents, etiquette, inventory management, and yard sales. Each project includes pre-reading, reading, writing, and math activities connected to the topic. For example, the "Take Stock in your Future" project uses Donald Trump as a role model and has students research careers in finance. The projects are designed to develop both academic and essential life skills.
There are four types of sentences: declarative, interrogative, exclamatory, and imperative. Declarative sentences make statements and end with a period. Interrogative sentences ask questions and end with a question mark. Exclamatory sentences show strong feeling and end with an exclamation point. Imperative sentences give commands and end with a period. The document then provides examples of each type of sentence and a practice section for readers to identify sentence types.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce stress and anxiety, boost mood, and enhance cognitive function. Staying physically active for at least 30 minutes each day is recommended for significant health benefits.
IELTS ACADEMIC TASK 1: How to describe a line graphBen Worthington
Full tutorial on how to describe a line graph for IELTS academic Task 1.
Presentation includes vocabulary, set phrases, verbs, and instructions to write a structured high scoring response.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce symptoms of depression and anxiety, enhance mood, and boost brain function. Staying physically active helps fight diseases and conditions while improving quality of life.
IELTS ACADEMIC TASK 1: How to describe a pie chartBen Worthington
The document provides tips and templates for describing pie charts in the IELTS exam. It recommends a 5-step process: 1) sign up for tutorials; 2) download audio lessons; 3) subscribe to the YouTube channel; 4) subscribe to the podcast; and 5) ask for help if needed. It then gives examples of language for describing portions, tips for preparation and writing, and an easy 3-paragraph template to use. Finally, it provides challenges to spot mistakes in examples and practice writing descriptions.
The document outlines the top 10 common grammar mistakes made in IELTS writing exams. These include issues with pronoun referents, who vs whom, lay vs lie, transition words, subject-verb agreement, pluralization of nouns, commas, its vs it's, affect vs effect, and active vs passive voice. For each mistake, the document provides examples of incorrect versus correct usage to illustrate the grammar rules. Additional online resources are also listed for further information on improving grammar for the IELTS exam.
This document provides information about the IELTS exam, including what it tests, the test format and modules, scoring, and registration details. IELTS is an English language test for non-native speakers wanting to study or work in an English-speaking environment. It measures listening, reading, writing, and speaking abilities. The test takes 2.5-3 hours and results are reported on a 9-band scale, valid for two years. Test centers are located worldwide to provide convenient local exam options.
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This document provides information about home insulation and its benefits. It discusses how insulation can lower utility bills by reducing heat loss, while also increasing comfort, property value, and sustainability. Specific insulation products like cellulose insulation are highlighted for their high R-value, moisture resistance, soundproofing, and fire safety. The document encourages homeowners to insulate to save up to 33% on energy costs and qualify for tax credits. Installation options and financing are also mentioned.
Homes By Dickerson outlines their top 10 green home features:
1. ZIP system air barrier to prevent air infiltration.
2. Foil-backed plywood to reflect heat and improve energy efficiency.
3. Framing to maximize insulation and reduce air infiltration.
4. Low-E energy star windows to reduce heat transfer.
5. Properly-sized HVAC to evenly condition the home and reduce energy costs.
6. Water-efficient faucets and shower heads approved by the EPA.
The document discusses how sealing and insulating ducts in homes with forced-air heating and cooling systems can improve comfort, indoor air quality, safety, and energy efficiency. Leaky ducts are a common problem that can waste up to 20% of the energy used to heat and cool a home. Simple steps homeowners can take include sealing air leaks with mastic sealant, insulating accessible ducts, and ensuring tight connections at vents and registers. Hiring a professional contractor to inspect and repair the entire duct system is also recommended.
This document discusses the benefits of spray foam insulation for reducing energy costs and improving indoor air quality. It states that spray foam insulation provides industry-leading thermal resistance while also improving air quality, reducing drafts, and preventing moisture issues. The document recommends spray foam insulation as the first step to conserve energy and control the internal environment through an efficient building envelope. Spray foam insulation seals the building better than other materials, allowing HVAC systems to be right-sized and saving on equipment and operating costs.
The document discusses insulation and the benefits of using P2000 insulation over traditional fiberglass insulation. It notes that fiberglass can cause health issues for installers and occupants, while P2000 is made of non-conductive and non-hazardous materials. P2000 provides effective insulation, a vapor barrier, and thermal break in one application. The document also discusses the increased risk of condensation in homes and how P2000 helps prevent this issue compared to fiberglass insulation.
2011 03-14 nahbrc-greenprints afford-housingefficiencyAmber Joan Wood
The document summarizes efforts by the NAHB Research Center and Department of Energy to promote energy efficient affordable housing through remodeling and new construction approaches. It discusses programs like Building America that support research partnerships and the Builders Challenge for energy efficient home certification. Case studies show air sealing and insulation upgrades can significantly improve home energy performance and lower costs.
This document provides information about the energy efficient and environmentally friendly features of a home for sale located at 560 Tamarisk Lane. It highlights features like extra attic insulation, new high-efficiency windows, dense-pack cellulose wall insulation, sealed ductwork and crawlspace, and a high-efficiency HVAC system. These largely unseen upgrades are said to provide significant savings on utility bills and improve home comfort compared to minimum code-level construction.
This document discusses strategies for making housing more energy efficient and green, including:
1) Conducting energy audits and offering low-interest loans to upgrade multifamily housing units with insulation and air sealing.
2) The first step to making a building more energy efficient and green is through insulation and air sealing, not renewable energy options, to reduce fossil fuel usage as much as possible.
3) Proper air sealing is important to control ventilation rather than relying on random air leaks, and can be tedious but important work.
The document outlines three key areas of focus for air sealing and insulating residential buildings:
1. Air Sealing - How and why houses leak air, the importance of measuring and reducing air leakage, and sealant choices.
2. Insulating - Material choices for insulation and proper installation techniques.
3. Bonus Room Comfort - The challenges of comfortable bonus rooms and how effective air sealing and insulating can help address these challenges.
1) A vented attic is a simple and effective roof assembly design that works well everywhere if properly constructed.
2) Key details for a vented attic include a fully airsealed attic floor, sufficient attic insulation, continuous soffit venting, and a slight positive pressure in the attic space.
3) A vented roof deck can be used if the attic is conditioned space or has a vaulted ceiling, with at least 2 inches of ventilation space between the sheathing and insulation.
This document discusses Living Green Homes, a green consulting company that specializes in building science education, energy efficient retrofits, and new green home construction. It provides information on the owners and their certifications. It then discusses common air infiltration, HVAC, insulation, and indoor air quality problems found in existing homes and provides solutions to make homes more energy efficient and healthy. Diagnostic testing methods like blower door and duct blaster tests are also summarized.
This document is a newsletter from Agave Premier Properties & Investments that provides real estate and home maintenance tips. It discusses cleaning HVAC systems to improve air quality and efficiency. It also provides tips for deck safety including inspecting for decaying wood. Additionally, it recommends going green by installing motion sensor lights, considering solar options for pools and landscaping, and provides an Asian salad recipe.
Whitepaper Home defects that impact energy billsedreeve
This whitepaper discusses common home energy defects found during inspections and simple fixes homeowners can do. Poor attic insulation is a major source of energy loss, and adding more insulation can save 15-25% on bills. Gaps around doors and windows also cause air leaks, costing up to 10% extra. Replacing weather stripping is an easy fix. Air duct leaks should be sealed with duct mastic. Programmable thermostats and replacing incandescent bulbs with LEDs further reduce costs. Overall, addressing these typical issues can significantly improve a home's energy efficiency through low-cost repairs and upgrades.
This document provides a summary of the Insulation Council of Australia and New Zealand's (ICANZ) recommended training requirements for persons employed to install insulation. It outlines prerequisites and modules covering topics such as emergency first aid, asbestos awareness, confined spaces, construction industry safety induction, principles of energy efficiency and acoustics, codes, standards and regulations, work health and safety, and installing ceiling and wall insulation products. The training requirements are designed to provide installers with knowledge of insulation benefits, relevant regulations and standards, and safe work practices. Completion of the training would help qualify professionals and promote the correct installation of insulation.
This document provides information about attic insulation services offered by Eco Insulation. It summarizes that insulating your attic can save money by reducing energy costs up to 30% and air loss up to 40%. A well-insulated attic also increases comfort by keeping homes warmer in winter and cooler in summer. The document lists reasons for removing existing attic insulation such as fixing electrical issues, preventing ice dams, and ensuring proper ventilation.
The document discusses the benefits of exercise for both physical and mental health. Regular exercise can improve cardiovascular health, reduce symptoms of depression and anxiety, enhance mood, and boost brain function. Staying physically active helps fight diseases and conditions while improving quality of life.
IELTS ACADEMIC TASK 1: How to describe a pie chartBen Worthington
The document provides tips and templates for describing pie charts in the IELTS exam. It recommends a 5-step process: 1) sign up for tutorials; 2) download audio lessons; 3) subscribe to the YouTube channel; 4) subscribe to the podcast; and 5) ask for help if needed. It then gives examples of language for describing portions, tips for preparation and writing, and an easy 3-paragraph template to use. Finally, it provides challenges to spot mistakes in examples and practice writing descriptions.
The document outlines the top 10 common grammar mistakes made in IELTS writing exams. These include issues with pronoun referents, who vs whom, lay vs lie, transition words, subject-verb agreement, pluralization of nouns, commas, its vs it's, affect vs effect, and active vs passive voice. For each mistake, the document provides examples of incorrect versus correct usage to illustrate the grammar rules. Additional online resources are also listed for further information on improving grammar for the IELTS exam.
This document provides information about the IELTS exam, including what it tests, the test format and modules, scoring, and registration details. IELTS is an English language test for non-native speakers wanting to study or work in an English-speaking environment. It measures listening, reading, writing, and speaking abilities. The test takes 2.5-3 hours and results are reported on a 9-band scale, valid for two years. Test centers are located worldwide to provide convenient local exam options.
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This document provides information about home insulation and its benefits. It discusses how insulation can lower utility bills by reducing heat loss, while also increasing comfort, property value, and sustainability. Specific insulation products like cellulose insulation are highlighted for their high R-value, moisture resistance, soundproofing, and fire safety. The document encourages homeowners to insulate to save up to 33% on energy costs and qualify for tax credits. Installation options and financing are also mentioned.
Homes By Dickerson outlines their top 10 green home features:
1. ZIP system air barrier to prevent air infiltration.
2. Foil-backed plywood to reflect heat and improve energy efficiency.
3. Framing to maximize insulation and reduce air infiltration.
4. Low-E energy star windows to reduce heat transfer.
5. Properly-sized HVAC to evenly condition the home and reduce energy costs.
6. Water-efficient faucets and shower heads approved by the EPA.
The document discusses how sealing and insulating ducts in homes with forced-air heating and cooling systems can improve comfort, indoor air quality, safety, and energy efficiency. Leaky ducts are a common problem that can waste up to 20% of the energy used to heat and cool a home. Simple steps homeowners can take include sealing air leaks with mastic sealant, insulating accessible ducts, and ensuring tight connections at vents and registers. Hiring a professional contractor to inspect and repair the entire duct system is also recommended.
This document discusses the benefits of spray foam insulation for reducing energy costs and improving indoor air quality. It states that spray foam insulation provides industry-leading thermal resistance while also improving air quality, reducing drafts, and preventing moisture issues. The document recommends spray foam insulation as the first step to conserve energy and control the internal environment through an efficient building envelope. Spray foam insulation seals the building better than other materials, allowing HVAC systems to be right-sized and saving on equipment and operating costs.
The document discusses insulation and the benefits of using P2000 insulation over traditional fiberglass insulation. It notes that fiberglass can cause health issues for installers and occupants, while P2000 is made of non-conductive and non-hazardous materials. P2000 provides effective insulation, a vapor barrier, and thermal break in one application. The document also discusses the increased risk of condensation in homes and how P2000 helps prevent this issue compared to fiberglass insulation.
2011 03-14 nahbrc-greenprints afford-housingefficiencyAmber Joan Wood
The document summarizes efforts by the NAHB Research Center and Department of Energy to promote energy efficient affordable housing through remodeling and new construction approaches. It discusses programs like Building America that support research partnerships and the Builders Challenge for energy efficient home certification. Case studies show air sealing and insulation upgrades can significantly improve home energy performance and lower costs.
This document provides information about the energy efficient and environmentally friendly features of a home for sale located at 560 Tamarisk Lane. It highlights features like extra attic insulation, new high-efficiency windows, dense-pack cellulose wall insulation, sealed ductwork and crawlspace, and a high-efficiency HVAC system. These largely unseen upgrades are said to provide significant savings on utility bills and improve home comfort compared to minimum code-level construction.
This document discusses strategies for making housing more energy efficient and green, including:
1) Conducting energy audits and offering low-interest loans to upgrade multifamily housing units with insulation and air sealing.
2) The first step to making a building more energy efficient and green is through insulation and air sealing, not renewable energy options, to reduce fossil fuel usage as much as possible.
3) Proper air sealing is important to control ventilation rather than relying on random air leaks, and can be tedious but important work.
The document outlines three key areas of focus for air sealing and insulating residential buildings:
1. Air Sealing - How and why houses leak air, the importance of measuring and reducing air leakage, and sealant choices.
2. Insulating - Material choices for insulation and proper installation techniques.
3. Bonus Room Comfort - The challenges of comfortable bonus rooms and how effective air sealing and insulating can help address these challenges.
1) A vented attic is a simple and effective roof assembly design that works well everywhere if properly constructed.
2) Key details for a vented attic include a fully airsealed attic floor, sufficient attic insulation, continuous soffit venting, and a slight positive pressure in the attic space.
3) A vented roof deck can be used if the attic is conditioned space or has a vaulted ceiling, with at least 2 inches of ventilation space between the sheathing and insulation.
This document discusses Living Green Homes, a green consulting company that specializes in building science education, energy efficient retrofits, and new green home construction. It provides information on the owners and their certifications. It then discusses common air infiltration, HVAC, insulation, and indoor air quality problems found in existing homes and provides solutions to make homes more energy efficient and healthy. Diagnostic testing methods like blower door and duct blaster tests are also summarized.
This document is a newsletter from Agave Premier Properties & Investments that provides real estate and home maintenance tips. It discusses cleaning HVAC systems to improve air quality and efficiency. It also provides tips for deck safety including inspecting for decaying wood. Additionally, it recommends going green by installing motion sensor lights, considering solar options for pools and landscaping, and provides an Asian salad recipe.
Whitepaper Home defects that impact energy billsedreeve
This whitepaper discusses common home energy defects found during inspections and simple fixes homeowners can do. Poor attic insulation is a major source of energy loss, and adding more insulation can save 15-25% on bills. Gaps around doors and windows also cause air leaks, costing up to 10% extra. Replacing weather stripping is an easy fix. Air duct leaks should be sealed with duct mastic. Programmable thermostats and replacing incandescent bulbs with LEDs further reduce costs. Overall, addressing these typical issues can significantly improve a home's energy efficiency through low-cost repairs and upgrades.
This document provides a summary of the Insulation Council of Australia and New Zealand's (ICANZ) recommended training requirements for persons employed to install insulation. It outlines prerequisites and modules covering topics such as emergency first aid, asbestos awareness, confined spaces, construction industry safety induction, principles of energy efficiency and acoustics, codes, standards and regulations, work health and safety, and installing ceiling and wall insulation products. The training requirements are designed to provide installers with knowledge of insulation benefits, relevant regulations and standards, and safe work practices. Completion of the training would help qualify professionals and promote the correct installation of insulation.
This document provides information about attic insulation services offered by Eco Insulation. It summarizes that insulating your attic can save money by reducing energy costs up to 30% and air loss up to 40%. A well-insulated attic also increases comfort by keeping homes warmer in winter and cooler in summer. The document lists reasons for removing existing attic insulation such as fixing electrical issues, preventing ice dams, and ensuring proper ventilation.
The document defines and describes the mullet hairstyle and its various subspecies, which are typically associated with lower socioeconomic groups. It provides details on classic mullet styles like the Camaro Cut and Mini-Truck Mullet, as well as less common varieties such as the Femmullet and Skullet. Examples and characteristics of different mullet subtypes are given through images and descriptions.
This document appears to be a diagram showing the main characters from the television show South Park arranged in a circle numbered 1 through 10. The main characters Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick are depicted based on their typical character numbers. The diagram also includes a copyright date of 2007.
Meekie Monthly is a free subscription-based e-magazine that aims to celebrate people with large heads, known as "meekies". The June 2007 issue includes interviews with celebrities, letters from readers, and sections on sports, horoscopes and more. The editor's letter discusses his recent penis reduction surgery and upcoming family vacation. Writers are wanted to contribute articles on various topics to the magazine's "hallowed pages".
The document lists various types of cakes including Baby Boom Strawberry White Chocolate cake, Tobblerone Cheese cake, Taro Fresh Cream cake, Prune cake, Cheese cake, New York Cherry Cheese cake and many other flavors like Mocha, Coconut, Chocolate, Carrot, Brownie, Blueberry and Black Forest cake.
The document provides nostalgic photos and descriptions of places in the Philippines from the 1900s to the 1980s. It mentions locations like Ayala Avenue, Rustan's department store in Makati, The Automat restaurant, Manila Intercon hotel, IBM building, and RCPI building along Makati Avenue. It also shows photos of Quiapo Church, Luneta Park, Plaza Miranda, Manila's walled city, and celebrities from the 1970s and 1980s like the boy band Menudo and Filipino actors and singers. The purpose is to evoke nostalgia among older Filipinos who remember what these places and celebrities were like during that time period.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise stimulates the production of endorphins in the brain which elevate mood and reduce stress levels.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
The Greek Gods In Classical Literature & Art Filesdiscover
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
Adopta un perro que se adapte a tu estilo de vida y personalidad. Muchos otros han encontrado perros que se ajustan perfectamente a sus necesidades y les brindan compañía. Si no encuentras el perro adecuado de inmediato, sigue buscando hasta hallar a tu compañero peludo ideal.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
Programming Foundation Models with DSPy - Meetup SlidesZilliz
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
Skybuffer AI: Advanced Conversational and Generative AI Solution on SAP Busin...Tatiana Kojar
Skybuffer AI, built on the robust SAP Business Technology Platform (SAP BTP), is the latest and most advanced version of our AI development, reaffirming our commitment to delivering top-tier AI solutions. Skybuffer AI harnesses all the innovative capabilities of the SAP BTP in the AI domain, from Conversational AI to cutting-edge Generative AI and Retrieval-Augmented Generation (RAG). It also helps SAP customers safeguard their investments into SAP Conversational AI and ensure a seamless, one-click transition to SAP Business AI.
With Skybuffer AI, various AI models can be integrated into a single communication channel such as Microsoft Teams. This integration empowers business users with insights drawn from SAP backend systems, enterprise documents, and the expansive knowledge of Generative AI. And the best part of it is that it is all managed through our intuitive no-code Action Server interface, requiring no extensive coding knowledge and making the advanced AI accessible to more users.
A Comprehensive Guide to DeFi Development Services in 2024Intelisync
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1. A DO-IT-YOURSELF GUIDE
For more information United States Office of Air and Radiation
www.energystar.gov Environmental (6202J) EPA 430-F-04-024
TO ENERGY STAR HOME SEALING
®
or call 1.888.STAR.YES Protection Agency September 2006
(1.888.782.7937). SEALING AIR LEAKS AND ADDING ATTIC INSULATION
Recycled/Recyclable – Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 50% Post-consumer Content)
3. LOCATING AIR LEAKS
More than any other time of year, you notice your home’s air leaks in the winter. Most people call
these air leaks “drafts.” You may feel these drafts around windows and doors and think these leaks
Effects of Air Leaks
are your major source of wasted energy. In most homes, however, the most significant air leaks are
Cold outside air drawn into the house
hidden in the attic and basement. These are the leaks that significantly raise your energy bill and
Heated inside air drawn into the attic
make your house uncomfortable. In cold weather, warm air rises in your house, just like it does in a
chimney. This air, which you have paid to heat, is just wasted as it rises up into your attic and sucks
cold air in all around your home – around windows, doors, and through holes into the basement.
The illustrations on Page 1.3 and 3.1 show warm air leaving (red arrows) the house through the attic
and cold air being pulled into the house (blue arrows). Locating these leaks can be difficult because
they are often hidden under your insulation. This guide will help you find these leaks and seal them
with appropriate materials.
A
Common Household D G
Air Leaks
Even if you have enough
B E
C
insulation in your attic, sealing
A Behind Kneewalls F
attic air leaks will enhance the
B
performance of your insulation Attic Hatch
and make for a much more
C Wiring Holes
comfortable home.
D Plumbing Vent I
E Open Soffit (the box that hides
recessed lights)
If you are not familiar with
F Recessed Light
some of the terms in this guide, H
check our glossary inside the G Furnace Flue or Duct Chaseways
back cover. (the hollow box or wall feature that
hides ducts)
H Basement Rim Joists (where the
foundation meets the wood framing)
I Windows and Doors
1.2 LOCATING AIR LEAKS 1.3 LOCATING AIR LEAKS
4. GETTING STARTED
You May Need a Contractor Tips For Working in the Attic
to Correct These Problems: Have a Plan in Place Above All – Be Safe
■ ■
Attic air sealing and adding insulation
Wet or damp insulation indicating a
■ The key to any successful home Take precautions to avoid a dangerous
are do-it-yourself projects if your attic is
leaky roof improvement project is adequate working environment in the attic. During
accessible and not too difficult to move
planning. Gather all your tools and hot weather start working early, as attics
around in. The projects recommended in
Moldy or rotted attic rafters or floor
■
supplies before you begin to minimize trips heat up as the day moves on. Drink plenty
this guide can usually be completed in a
joists indicating moisture problems in and out of the attic. Be sure that the of water and use an OSHA-approved
day or two and will provide benefits for
work area is well-lit by using a drop light, particulate respirator or double-strap
Kitchen, bathroom, and clothes
■ years to come. However, if upon inspection
and keep a flashlight handy. dust mask to prevent inhalation of
dryer vents that exhaust moist air of your attic you find any of the conditions
hazardous substances. Also remember
directly into the attic space instead listed to the left, we recommend you Prepare to Get Dirty
■
to watch your step. Walk on joists or
of outdoors consider hiring a contractor to correct The entire process of sealing your attic
truss chords, not exposed ceiling drywall
these problems before proceeding. will be made easier if you take the time
A history of ice dams in the winter
■ or insulation. In addition, watch out for
and effort to wear the right gear. Wear
(an indication of serious air leaks) sharp nails sticking through the
For tips on hiring the right contractor, visit knee pads to help prevent pain associated
roof deck!
www.energystar.gov/homeimprovement.
Little or no attic ventilation (see Page
■ with crawling on attic joists. Additionally,
4.2 – A Note About Attic Ventilation) a lightweight disposable coverall, gloves,
and hat can keep itchy and irritating
Knob and tube wiring (pre-1930), Get Your Bearings
■
insulation off your skin.
which can be a fire hazard when in
from Below
contact with insulation
Materials Checklist for Sealing Attic Air Leaks
A good way to start home sealing is to
If you have many unsealed and
■
• •
make a quick sketch of your home’s floor Batt or roll of unfaced fiberglass insulation Roll of 14-inch wide aluminum flashing to keep
uninsulated recessed “can” lights, and large garbage bags (for stuffing open insulation away from the flue pipe
plan. This sketch will serve as a reference
special care must be taken when stud cavities behind kneewalls and in
point once you get into the attic and will • Retractable utility knife and sheet metal scissors
dropped soffits)
insulating around these fi xtures
help you locate areas of leakage. In your
• Tape measure and staple gun (or hammer and
(See Page 2.2) • Roll of reflective foil insulation or other blocking
sketch, make note of dropped soffits over nails) to hold covering materials in place
material such as drywall or pieces of rigid foam
kitchen cabinets or bath vanities, slanted
insulation to cover soffits, open walls, and • Safety glasses, gloves, and dust mask
ceilings over stairways, where walls larger holes (for insulation work as well)
(interior and exterior) meet the ceiling, and
• Silicone or acrylic latex caulk & caulk gun for • Flashlight or portable safety light
any other dropped-ceiling areas. These sealing small holes (1/4 inch or less)
areas may have open stud cavities leading • Boards to walk on, if needed
• Several cans of expanding spray foam insulation
directly into the attic and can be huge
•
for filling larger gaps (1/4 inch to 3 inches) Large bucket to haul materials
sources of air leaks (see photos 1-3 on
• Special high-temperature (heat-resistant) caulk
Pages 1.6 and 1.7).
to seal around flues and chimneys 1.5 GETTING STARTED
1.4 GETTING STARTED
5. SEALING ATTIC AIR LEAKS
4. SEAL BEHIND KNEEWALLS
3. COVER DROPPED SOFFITS
Plug the Big Holes First
REFLECTIVE FOIL
Don’t worry about finding and sealing all the little holes in your attic; your biggest savings INSULATION
24” BATT
will come from plugging the large ones. Once in the attic, refer to your sketch to locate ROLLED INSIDE
GARBAGE BAG
the areas where leakage is likely to be greatest: where walls (inner and outer) meet the KNEEWALL
attic floor, dropped soffits (dropped-ceiling areas), and behind or under attic kneewalls.
Look for dirty insulation – this indicates that air is moving through it. Dropped soffits may
be filled or covered with insulation and hard to see. Push back the insulation and scoop it
OPEN JOIST
out of the soffits. You will place this insulation back over the soffit once the stud cavities CAVITY
have been plugged and the soffits covered (photos 1-3) (If you have recessed “can” lights DROPPED
SOFFIT
in your open soffits, please read about them on Page 2.2 before proceeding).
CAULK OR ADHESIVE
After removing insulation from a dropped soffit, cut Cut a 24 inch long piece from a batt of fiberglass
a length of reflective foil or other blocking material insulation and place it at the bottom of a 13-gallon
(rigid foam board works well) a few inches longer
1. CREATE STUFFED BAGS plastic garbage bag. Fold the bag over and stuff it
2. PLUG OPEN STUD CAVITIES
than the opening to be covered. Apply a bead of into the open joist spaces under the wall (a piece of
caulk or adhesive around the opening. Seal the foil rigid foam board sealed with spray foam also works
to the frame with the caulk/adhesive and staple or well for covering open joist cavities). Again, cover
nail it in place, if needed.
OPEN
with insulation when you’re done.
STUD CAVITY
If You Have a Finished Attic, Seal Behind the Kneewalls
PLUGGED
Finished rooms built into attics often have open cavities in the floor framing under the
STUD CATIVITY
16” PIECE OF
side-walls or kneewalls. Even though insulation may be piled against or stuffed into these
FIBERGLASS
BATT
spaces, they can still leak air. Again, look for signs of dirty insulation to indicate air is
RECESSED
CAN LIGHT
DROPPED
moving through. You need to plug these cavities in order to stop air from traveling under
SOFFIT
RECESSED
the floor of the finished space (photo 4).
CAN LIGHT
Cut a 16 inch long piece from a batt of unfaced Fold the bag and stuff it into the open stud cavity.
fiberglass insulation and fold it into the bottom Add more insulation to the bag if it doesn’t fit
Caution: Some attics have vermiculite insulation, which may contain asbestos, a health
of a 13-gallon plastic garbage bag. tightly. Plug all open stud spaces, then cover the
hazard. Vermiculite is a lightweight, pea-size, flaky gray mineral. Don’t disturb vermiculite
soffit (photo 3, Page 1.7 ).
insulation unless you’ve had it tested by an approved lab to be sure it doesn’t contain
asbestos. Contact your local health department for the name of an approved lab.
1.7 SEALING ATTIC AIR LEAKS
1.6 SEALING ATTIC AIR LEAKS
6. SEALING ATTIC AIR LEAKS
6. SEAL WITH SILICONE CAULK 7. FORM AN INSULATION DAM
Furnace Flues Require Special Sealing Techniques
The opening around a furnace or water heater flue or chimney can be a major source of 1” TABS
RENT IN
warm air moving in the attic. Because the pipe gets hot, building codes usually require 1
inch of clearance from metal flues (2 inches from masonry chimneys) to any combustible
material, including insulation. Photos 5 and 6 show how to seal this gap with lightweight
aluminum flashing and special high-temperature (heat-resistant) caulk. Before you push
the insulation back into place, build a metal dam (photo 7) to keep it away from the pipe.
Use the same technique for masonry chimneys. INSULATION DAM
STAPLE
DOWN
2” TABS
BENT OUT
HIGH-TEMP
CAULK
5. CUT ALUMINUM FLASHING
Seal the gap between the flue and metal flashing Form an insulation dam to prevent insulation from
Caution: Furnace flues (the with special high-temperature caulk. Don’t use contacting the flue pipe. Cut enough aluminum from
CLASS B
FURNACE FLUE
pipe that removes your furnace spray foam. the coil to wrap around the flue plus 6 inches. Cut
exhaust) can be very hot. slots 1 inch deep and a few inches apart along the
top and bend the tabs in. Cut slots about 2 inches
deep along the bottom and bend out the tabs. Wrap
the dam around the flue and secure the bottom by
stapling through the tabs. Now put insulation back
right up against the dam.
HIGH-TEMP
Identifying Attic Pipes
CAULK
OPEN JOIST
14” ALUMINUM
CAVITY
FLASHING
FLUES/VENTS/PIPES: MADE OUT OF: SEAL AROUND WITH:
Cut aluminum flashing to fit around the flue. For
round flues, cut half circles out of two pieces so
Aluminum flashing and high-
they overlap about 3 inches in the middle. Press
Furnace/Water Heater Galanized Metal
temperature silicone caulk
the flashing metal into a bead of high-temperature
caulk and staple or nail it into place. If there’s no
Aluminum flashing and high-
wood, staple or nail it directly to the drywall, but
Chimney Masonry/Metal
temperature silicone caulk
be sure not to staple or nail through the drywall.
Expanding foam or caulk,
Plumbing Cast Iron or PVC
depending on size of gap
1.9 SEALING ATTIC AIR LEAKS
1.8 SEALING ATTIC AIR LEAKS
7. SEALING ATTIC AIR LEAKS
Foam or Caulk Small Gaps in Your Attic Seal Small Gaps
Even though most of the gaps spilling warm air into your attic are buried under insulation, Use expanding foam or caulk to seal the openings around plumbing vent pipes and
you might be able to find evidence of these gaps. Look for areas where the insulation electrical wires (see photos 9 and 10). Be sure to wear gloves and be careful not to get
is darkened (see photo 8). This is the result of filtering dusty air from the house. In cold expanding foam on your clothes, as the foam is very sticky and nearly impossible to
weather, you may also see frosty areas in the insulation caused by warm, moist air remove once it sets. When the foam or caulk is dry, cover the area again with insulation.
condensing and then freezing as it hits the cold attic air. In warmer weather, you’ll find
water staining in these same areas. Although the insulation is dirty, it is still okay to use.
There’s no need to remove and replace. After sealing the areas, just push the insulation
back into place. If you have blown insulation, a small rake can be helpful to level it back
into place.
8. FIND ATTIC BYPASSES 9. FILL HOLES WITH CAULK 10. STUFF GAPS WITH INSULATION
PLUMBING
VENT
SPRAY FOAM
IN HOLES
CAULK
OPENINGS
DIRTY INSULATION
EXPANDING FOAM
DUST FROM
GAP AROUND
LEAKING AIR
PLUMBING VENT
ELECTRICAL BOX
Check for gaps in your attic that facilitate air Fill wiring and plumbing holes with expanding foam. If the space around your plumbing pipe is wider
movement by checking for dirty insulation. Seal the Caulk around electrical junction boxes, and fill than 3 inches, you may need to stuff some
gaps with caulk or expanding foam. When complete holes in box with caulk. fiberglass insulation into the space to serve as a
and dry, push the insulation back into place. backer for the expanding foam. Once the fiberglass
insulation is in place, follow the directions on the
can to foam the space around the pipe.
1.10 SEALING ATTIC AIR LEAKS 1.11 SEALING ATTIC AIR LEAKS
8. SEALING ATTIC AIR LEAKS ADDITIONAL SOURCES OF AIR LEAKS
If Your Heating and Cooling Ducts Are in Your Attic,
Complete the Job by Sealing the Attic Hatch or Door
Seal Them While in the Attic
Finish up by sealing the access hatch with self-sticking weather stripping (photos 11 and
12). If your hatch rests directly on the moldings, add 2-1/2 inch wide stops around the Leaky and poorly-insulated ducts (especially in attics) severely compromise the
opening. The stops provide a wider surface for attaching the weatherstrip and a space performance of your heating and cooling equipment. Sealing and insulating your ducts
to mount hook-and-eye fasteners. Position the screw eyes so the weatherstrip is slightly can increase the efficiency of your heating and cooling system by 20% and greatly
compressed when the hooks are latched. Cut a piece of fiberglass or rigid foam board increase air flow.
insulation the same size as the attic hatch and nail or glue it to the back of the hatch.
Check the duct connections for leaks
If you have pull-down attic stairs or an attic door, these should be sealed in a similar ■
Materials Checklist
by turning on your heating and cooling
manner: weatherstrip the edges and put a piece of rigid foam board insulation on the back
for Attic Duct Sealing
system fan and feeling for leaks – seal the
of the door. Treat the attic door like a door to the outside. Pre-made insulated attic stair
joints with mastic or foil tape (household
covers are also available from local home improvement centers or on the Web.
Duct sealant (mastic) or metal-
•
duct tape should not be used).
backed (foil) tape
Pay special attention to all the duct
■
12. ATTACH FASTENERS
11. WEATHERSTRIP THE DOOR Duct insulation material rated at
•
penetrations going through the attic floor. least R-6
Seal these with foam.
Zip ties to hold duct insulation
•
in place
Ducts should also be insulated – if your
■
ducts are uninsulated or poorly insulated Gloves, safety glasses, mask,
•
flashlight
(i.e., you see gaps or torn insulation), seal
them first, then add insulation to keep the air NOTE: Duct sealant, also known as duct mastic,
is a paste which is more durable than foil duct
in your ducts at your desired temperature
COMPRESSED
tape. It is available at home improvement centers.
as it moves through the system. Use duct
WEATHERSTRIP
SELF-ADHESIVE FOAM
Traditional grey duct tape fails quickly and
WEATHERSTRIP
insulation material rated at least R-6. should not be used.
HOOK-AND-EYE
NEW WOOD STOPS
LATCH
EXISTING MOLDING HATCH
DOOR
Caution: Check for Carbon Monoxide to keep your house safe. After making energy
Weatherstrip the attic access hatch or door. Cut 1x3 Attach hook-and-eye fasteners to the attic door and
improvements that result in a tighter house, there can be an increased opportunity for CO
boards to fit the perimeter of the opening and nail stops. Position the eyes so that the weatherstrip is
to build up if your gas-burning appliances are not venting properly. Have your heating and
them on with 6d finish nails. Apply self-adhesive compressed when you latch the hooks.
cooling technician check your combustion appliances (gas- or oil-fired furnace, water heater,
foam weatherstrip tape to the top edge of the stop.
and dryer) for proper venting. For additional information on Indoor Air Quality (IAQ) issues
related to homes such as combustion safety, indoor air contaminants, and proper ventilation,
visit www.epa.gov/iaq/homes/hip-front.html.
2.1 ADDITIONAL SOURCES OF AIR LEAKS
1.12 SEALING ATTIC AIR LEAKS
9. ADDITIONAL SOURCES OF AIR LEAKS SEALING BASEMENT AIR LEAKS
Recessed “Can” Lights: Big Source of Air Leaks, Stopping the Chimney Effect
But No Easy Solution
Outside air drawn in through basement leaks
Recessed “can” lights (also called high-hats or recessed downlights) look great, but
is exacerbated by the chimney effect created
when they protrude into your attic space, they can make your home less energy-efficient.
by leaks in the attic. As hot air generated
These recessed lights in a one-story house or in the ceiling of a second-story create
by the furnace rises up through the house
open holes into your attic that allow unwanted heat flow between conditioned and
➊ and into the attic through leaks ➋, cold
unconditioned spaces. In the summer, hot attic air can make the rooms warmer, and in 2
the winter can lights draw warm air up into your attic. Both the warm air leakage and the outside air gets drawn in through basement
heat from the lights can cause problems. In cold climates, the heat melts snow on the
leaks to replace the displaced air ➌. This
roof and forms ice dams (water re-freezes at the roof edge). This is more likely to happen
1
makes a home feel drafty and contributes
if the “can” light is close to the roof deck. Recessed “can” lights in bathrooms also cause
to higher energy bills. After sealing attic air
problems when warm, moist air leaks into the attic and causes moisture damage. Here
are some suggestions for improving the recessed can lights in your attic: leaks, complete the job by sealing basement
leaks, to stop the chimney effect.
Call a Professional to Properly Seal Switch to More Efficient Bulbs
■ ■
Recessed lights can be sealed, but it is difficult When keeping existing recessed lights, you 3
and can create a hazard if not done properly with can still reduce lighting energy use as much
non-combustible materials. Since any old-style as 75% by installing ENERGY STAR qualified
lights need adequate air space around them to compact fluorescent light (CFL) bulbs. This
vent the heat they create, it’s best to consult with includes CFL bulbs specifically designed
a professional before sealing them. Also, see for recessed lights with built-in reflectors
“Caution” below. Alternatively, recessed lights matching the appearance of traditional
can be replaced with ICAT (Insulated Ceiling Air- incandescent reflector bulbs. As with new
Tight) rated lights, which insulation can touch and fixtures, it is important to make sure any
CFL bulb selected meets your light output
are sealed to reduce air leaks.
Locating Basement Air Leaks
expectations. Also, check the packaging of
When Replacing or Adding, Buy
■
the CFL to ensure that it may be used in an
ENERGY STAR with ICAT A common area of air leakage in the basement is along the top of the basement wall
enclosed fixture. However, switching to CFL
Look for ENERGY STAR qualified recessed fixtures where cement or block comes in contact with the wood frame. These leaks can easily be
bulbs will not solve the air leakage problem.
that reduce energy use as much as 75%. However, fixed in portions of the basement that are unfinished. Since the top of the wall is above
it’s important to check that any fixture selected ground, outside air can be drawn in through cracks and gaps where the house framing
Caution: Keep all insulation 3 inches
meets your light output expectations since fixtures
sits on top of the foundation. This perimeter framing is called the rim (or band) joist. In the
from “can” lights, except those rated
come with widely varying wattage bulbs and
basement, the above floor joists end at the rim joist creating multiple cavities along the
IC (insulation contact). You can use
optics. Also, make sure fixtures have an ICAT
length of the wall, and many opportunities for leakage (see illustration on Page 3.2).
a piece of circular metal flashing or
rating to minimize heat loss.
wire mesh around the light as a dam
to keep the insulation away from the
light (see photo 2, Page 4.3).
2.2 ADDITIONAL SOURCES OF AIR LEAKS 3.1 SEALING BASEMENT AIR LEAKS
10. SEALING BASEMENT AIR LEAKS
Seal All Gaps and Cracks around Rim Joists What About Insulating the Rim Joist?
Though you may not be able to see cracks in the rim joist cavities, it is best to seal up After air sealing the rim joist area it is relatively easy to insulate each cavity with rigid
the top and bottom of the inside of the cavity. Also, rim joist air sealing is especially foam insulation or fiberglass batts. If using batts, just cut the insulation to fit and place
important at bump out areas such as bay windows that hang off the foundation. These against the rim joist without compression, gaps, or voids. If using rigid, foam into place.
areas provide greater opportunities for air leakage and heat loss. Caulk is best for sealing This could also be done in conjunction with finishing the basement, when you would
gaps or cracks that are 1/4 inch or less. Use spray foam to fill gaps from 1/4 inch to about insulate the basement walls floor-to-ceiling. Attic and basement air sealing will go
3 inches. We also recommend you seal penetrations that go through the basement ceiling a long way to improve your comfort because your house will no longer act like an
to the floor above. Generally, these are holes for wires, water supply pipes, water drain open chimney.
pipes, the plumbing vent stack (for venting sewer gases), and the furnace flue (for venting
furnace exhaust).
ADDING ATTIC INSULATION
Materials Checklist for
Basement Sealing Caution: When sealing the furnace Now that you’ve air-sealed your attic and basement, check your attic insulation levels
flue (which will be encased in a
and add more if necessary. The attic is the easiest place to add insulation to improve your
metal sleeve) use high-temperature
Silicone or acrylic latex caulk and caulk gun
•
comfort and the energy efficiency of your home.
caulk. Run a bead of high-
temperature caulk around the pipe
Expanding spray foam
•
Do I Have Enough?
sleeve and around the metal frame.
No matter what kind of insulation you currently have in your attic, one quick way to
determine if you need more is to look across the span of your attic. If your insulation is
just level with or below your floor joists (i.e., you can easily see your joists), you should
Areas to Foam or Caulk
A Along the gap between the sill add more. If you cannot see any of the floor joists because the insulation is well above
plate and the foundation them, you probably have enough and adding more may not be cost-effective. It is
LONG RIM JOIST
C important that the insulation be evenly distributed with no low spots; sometimes there
RIM JOIST
B At the bottom and top of the rim
is enough insulation in the middle of the attic and very little along the eaves. To see how
joist on each end of the house
SUB FLOOR
to add insulation out to the eaves, see Installing Rafter Vents (on Page 4.4). If your attic
FLOOR
JOIST
C All electrical, water, or gas insulation covers your joists and is distributed evenly, you probably have enough.
B
A penetrations and any venting
ducts that pass to the outside
How Much Should I Add?
SILL PLATE
Insulation levels are specified by R-Value. R-Value is a measure of insulation’s ability
FOUNDATION
to resist heat flow. The higher the R-Value, the better the thermal performance of the
insulation. The recommended level for most attics is to insulate to R-38 or about 10 to 14
ILLUSTRATION BY DALE HOFFMEYER
inches, depending on insulation type.
3.2 SEALING BASEMENT AIR LEAKS 4.1 ADDING ATTIC INSULATION
11. ADDING ATTIC INSULATION
A Note about Natural Doing the Job
Attic Ventilation
Laying fiberglass rolls is easiest for a DIY job. If you have any type of insulation between
At first it may seem odd to add insulation for warmth the rafters, install the second layer over and perpendicular to the first (again, the second
and then purposely allow cold air to enter the attic
layer of roll insulation should be unfaced– with no vapor retarder). This will help cover
through vents, but this combination is the key to a
the tops of the joists and reduce heat loss or gain through the frame. Also, when laying
durable and energy-efficient home. Here’s why: in the
down additional insulation, work from the perimeter toward the attic opening. Never lay
winter, allowing a natural flow of outdoor air to ventilate
insulation over recessed light fixtures or soffit vents. Keep all insulation at least 3 inches
the attic helps keep it cold, which reduces the potential
away from “can” lights, unless they are rated IC (Insulated Ceiling). If you are using loose
for ice damming (snow that melts off a roof from an
fill insulation, use sheet metal to create barriers around the openings. If using fiberglass,
attic that is too warm and then re-freezes at the gutters,
wire mesh can be used to create a barrier.
causing an ice dam that can damage the roof). Proper
insulation and air sealing also keeps attics cold in
Use a blowing machine to blow in loose
winter by blocking the entry of heat and moist air from
fill insulation.
below. In the summer, natural air flow in a well-vented
Photo courtesy of Green Fiber
attic moves super-heated air out of the attic, protecting
roof shingles and removing moisture. The insulation will 1. LAY FIBERGLASS ROLLS 2. CREATE A BARRIER
resist heat transfer into the house. The most common
Add the Right Kind
mistake homeowners make when installing insulation
of Insulation
is to block the flow of air at the eaves. NEVER COVER
ATTIC SOFFIT VENTS WITH INSULATION – use rafter
When adding additional insulation, you do
vents and soffit vents to maintain airflow (See Pages 4.4
and 4.5). not have to use the same type of insulation
that currently exists in your attic. You
A Note about Attic Fans
can add loose fill on top of fiberglass
Attic fans are intended to cool hot attics by drawing
batts or blankets, and vice-versa. If you
in cooler outside air from attic vents (soffit and gable)
use fiberglass over loose fill, make sure
and pushing hot air to the outside. However, if your attic
the fiberglass batt has no paper or foil
has blocked soffit vents and is not well-sealed from the
backing; it needs to be “unfaced.” If you
rest of the house, attic fans will suck cool conditioned
choose to add loose fill, it may be wise
air up out of the house and into the attic. This will
Layer fiberglass roll insulation perpendicular Use sheet metal or wire mesh to help create a
to hire a professional, as the application
use more energy and make your air conditioner work
to the joists. barrier around fixtures or vents.
requires the use of a blowing machine,
harder, which will increase your summer utility bill.
Photo courtesy North American Insulation
although some home improvement stores
You don’t want your unfinished attic cooled by your air Manufacturers Association
offer rentals of this machine.
conditioner. To prevent this, follow the air sealing and
insulation strategies in this guide and make sure the
attic is well-ventilated using passive vents and natural
air flow.
4.2 ADDING ATTIC INSULATION 4.3 ADDING ATTIC INSULATION