NEXUS LEED Homes Presentation


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NEXUS LEED Homes Presentation

  1. 1. LEED-H is Different from LEED-NC
  2. 2. Why LEED for Homes? <ul><li>Independent third-party oversight </li></ul><ul><li>Provides framework for constructing a more environmentally sensitive project </li></ul><ul><li>Sets a goal for the project </li></ul><ul><li>Recognizes leadership in high quality green homebuilding </li></ul>
  3. 3. Why LEED for Homes? <ul><li>System based on measurable results </li></ul><ul><li>Benefits to the homeowner include: </li></ul><ul><ul><li>Lower energy and water bills </li></ul></ul><ul><ul><li>Better indoor air quality; reduced exposure to mold, mildew, and other indoor toxins </li></ul></ul><ul><li>Reduced greenhouse gas emissions & other environmental benefits </li></ul>
  4. 4. LEED-H Certifications <ul><li>Nationwide </li></ul><ul><ul><li>Certified projects: 1027 </li></ul></ul><ul><ul><li>Certified units: 1707 </li></ul></ul><ul><li>Massachusetts </li></ul><ul><ul><li>Certified Projects:  42 </li></ul></ul><ul><ul><li>Certified Units:  74 </li></ul></ul>
  5. 5. <ul><li>Four levels of certification: </li></ul><ul><ul><li>Certified, Silver, Gold, and Platinum </li></ul></ul><ul><li>Eight categories in which to claim credits: </li></ul><ul><ul><li>Innovation & Design </li></ul></ul><ul><ul><li>Location & Linkages </li></ul></ul><ul><ul><li>Sustainable Sites </li></ul></ul><ul><ul><li>Water Efficiency </li></ul></ul><ul><ul><li>Energy & Atmosphere </li></ul></ul><ul><ul><li>Materials & Resources </li></ul></ul><ul><ul><li>Indoor Environmental Quality </li></ul></ul><ul><ul><li>Awareness & Education </li></ul></ul>
  6. 6. Program Flow <ul><li>Program intake meeting </li></ul><ul><li>Plan and spec review </li></ul><ul><li>Questions and requirement clarifications </li></ul><ul><li>Field inspections </li></ul><ul><li>Documentation collection </li></ul><ul><li>Certification call with the USGBC </li></ul>
  7. 7. LEED for Homes Prerequisites <ul><li>19 Prerequisites </li></ul><ul><li>Shown on the next 21 slides </li></ul>
  8. 8. Preliminary Rating <ul><li>Prepare for Intake Meeting – review credits </li></ul><ul><li>Select credits at Intake Meeting </li></ul><ul><li>Assign responsibility for each credit </li></ul><ul><li>Select LEED for Homes target level </li></ul>
  9. 9. Durability Planning <ul><li>Complete Durability Risk Evaluation Form </li></ul><ul><ul><li>Identify durability issues </li></ul></ul><ul><li>Develop measures to address issues </li></ul><ul><li>Identify moisture control measures needed </li></ul><ul><ul><li>(expanded next slide) </li></ul></ul><ul><li>Incorporate measures in construction plans </li></ul><ul><li>List all measures – locations – in checklist </li></ul>
  10. 10. Moisture Control Measures 1 (Durability Planning) <ul><li>Tub, shower, spa – non paper faced backer board </li></ul><ul><li>Kitchen, bath, laundry, spa – use water resistant flooring (no carpet) </li></ul><ul><li>Entry area within 3’ of door – use water resistant flooring (no carpet) </li></ul><ul><li>Tank water heater in or over living space – install drain and drain pan </li></ul>
  11. 11. Moisture Control Measures 2 (Durability Planning) <ul><li>Cloths washer in or over living space – install drain and drain pan or install accessible single throw supply valve. </li></ul><ul><li>Conventional cloths dryer – exhaust directly to outdoors </li></ul><ul><li>Condensing cloths dryer – install drain and drain pan </li></ul>
  12. 12. Durability Management <ul><li>Builder must have a quality management process in place </li></ul><ul><li>Builder must inspect and check off each measure in a durability checklist </li></ul>
  13. 13. Erosion Control <ul><li>Stockpile and protect topsoil from erosion </li></ul><ul><li>Control the path and velocity of runoff </li></ul><ul><li>Protect sewer inlets, streams, and lakes </li></ul><ul><li>Provide swales to divert water from hillsides </li></ul><ul><li>Stabilize soils on sloped areas </li></ul>
  14. 14. No Invasive Plants <ul><li>Introduce no invasive plants into the landscape </li></ul>
  15. 15. ENERGY STAR Homes <ul><li>Meet the performance requirements for ENERGY STAR Homes </li></ul><ul><ul><li>Third party Inspections </li></ul></ul>
  16. 16. Reduced Distribution Losses <ul><li>Do not install ducts in exterior walls unless extra insulation is added that maintains the UA value of an exterior wall without ducts </li></ul><ul><li>Ducts run in interior walls must be continuous hard ducts. Seal duct joints and seams before walls are enclosed. </li></ul>
  17. 17. Refrigerant Charge Test <ul><li>Provide proof of proper refrigerant charge of air conditioner systems (homes with AC) </li></ul>
  18. 18. Framing Waste Order Factor Limit <ul><li>Limit overall framing waste factor to 10% or less </li></ul><ul><li>Calculate overall waste factor if any portion exceeds 10% </li></ul>
  19. 19. FSC Certified Tropical Wood <ul><li>Provide all wood product suppliers with notice containing all the following: </li></ul><ul><ul><li>Builder's preference is to purchase products containing tropical wood only if FSC certified. </li></ul></ul><ul><ul><li>Request country of manufacture of each product supplied. </li></ul></ul><ul><ul><li>Request a list of FSC-certified tropical wood products the vendor can supply. </li></ul></ul><ul><li>If tropical wood is used, use only FSC-certified tropical wood products . </li></ul>
  20. 20. Construction Waste Management Planning <ul><li>Investigate and document local options for diversion (recycle, reuse) of all major waste stream constituents including cardboard and household recyclables. </li></ul><ul><li>Document diversion rate for construction waste. </li></ul>
  21. 21. Basic Combustion Venting Measures <ul><li>No unvented combustion appliances allowed. </li></ul><ul><li>A carbon monoxide detector must be installed on each floor of every unit. </li></ul><ul><li>All fireplaces and woodstoves must have doors </li></ul><ul><li>Space and water heating equipment that involves combustion must meet one of the following </li></ul><ul><ul><li>designed and installed with closed combustion </li></ul></ul><ul><ul><li>designed and installed with power-vented exhaust </li></ul></ul><ul><ul><li>located in detached utility building or open air facility </li></ul></ul>
  22. 22. Basic Outdoor Air Ventilation <ul><li>Design and Install whole building ventilation system that complies with ASHRAE Standard 62.2-2007 </li></ul>
  23. 23. Basic Local Exhaust <ul><li>Design and install local Exhaust systems in all bathrooms and kitchen to meet Section 5 of ASHRAE 62.2-2007. </li></ul><ul><ul><li>Kitchen range hood >= 100 cfm. </li></ul></ul><ul><ul><li>Bathroom fans >= 50 cfm. </li></ul></ul><ul><li>Design and install fans and ducts to meet Section 7 of ASHRAE 62.2-2007. </li></ul><ul><li>Exhaust air to outdoors. </li></ul><ul><li>Use ENERGY STAR labeled bathroom exhaust fans. </li></ul>
  24. 24. Room by Room Load Calculations <ul><li>Forced air: perform duct calculations (ACCA Manuals J and D and ASHRAE Fundamentals or equivalent) and install accordingly </li></ul><ul><li>Non ducted: perform design calculations (ACCA Manuals J and D and ASHRAE Fundamentals or equivalent) and install accordingly </li></ul>
  25. 25. Good Filters <ul><li>Install air filters MERV >= 8. </li></ul><ul><ul><li>Forced air: ensure air handlers maintain adequate pressure and air flow, air filter housings are airtight. </li></ul></ul><ul><ul><li>Non Ducted: MERV 8 in mechanical ventilation if applicable. </li></ul></ul>
  26. 26. Radon-Resistant Construction in High Risk Areas <ul><li>In EPA Zone 1, design and build home with radon-resistant construction techniques as prescribed by EPA, International Residential Code, Washington State Ventilation and Indoor Air Quality Code, or equivalent </li></ul>
  27. 27. No HVAC in Garage <ul><li>Place all air-handling equipment and ductwork outside fire-rated envelope of garage </li></ul>
  28. 28. Operations Training <ul><li>Provide home's occupants with basic operations and maintenance owner's manual and a one hour walk through </li></ul>
  29. 29. Primary Roles in LEED-H
  30. 30. Recommendations <ul><li>Keep all prerequisites in mind </li></ul><ul><li>Get a provider involved as early as possible </li></ul><ul><li>Collect the proper documentation in an organized system (Assign responsibility) </li></ul><ul><li>Use the reference guide for guidance on program requirements </li></ul><ul><li>Don't chase points - do what makes sense for the project </li></ul>
  31. 31. Other Green Certification Options