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MinnePHit House Presentation

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This is the MinnePHit presentation I gave at the 2011 North American Passive House Conference in Silver Spring, MD. It features the Passive House retrofit of the Brazelton residence in Minneapolis, MN ...

This is the MinnePHit presentation I gave at the 2011 North American Passive House Conference in Silver Spring, MD. It features the Passive House retrofit of the Brazelton residence in Minneapolis, MN called MinnePHit House. More info at http://testudio.com/minnephit

The slideshow contains a lot of full-screen images but no subtitles, therefore omitting some of the information which would have been given verbally during the presentation.

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    MinnePHit House Presentation MinnePHit House Presentation Presentation Transcript

    • holistic design forsustainable homes• comfort• economy• ecology• quality• durability• beauty• functionality• healthSTUDIO:3429 Benjamin St. NEMinneapolis, MN 55418612-246-4670testudio.com CERTIFIED PASSIVE HOUSE™ CONSULTANT
    • 1935
    • What were they thinking? Structure ✓ }•• Weather Barrier ?• Insulation ✗• Airtightness ✗• Moisture Management ✓• Ventilation/ Air Quality ✗ GIT-R DONE• Comfort ✗ ✗• Daylight ✗• Durability (30 years?)• Design (Sign of the Times)
    • Where are we?
    • • 2 stories + basement• 1,200 finished SF• 2 bedrooms• 1 bath• 5 people
    • Envelope
    • Windows
    • Airtightness8.5 ACH50 [2,100 CFM50]
    • Mechanical systems
    • Mechanical systems
    • Where do we go?
    • Laundry List• + 3 Bedrooms• + 2 Baths• + Mudroom• Better kitchen• Better living areas• Homeschool room• Safe stairs• Weather-tight envelope• Durable structure• Healthy interiors• Comfort & daylight• Low operating cost• Energy performance
    • How do we get there?
    • Sports car?
    • Holistic Approach• Set goals for performance and design• Overlay architectural program• Make the home safe for people (code compliance)• Control temperature, air, and moisture• Add ventilation• Make the envelope air- and weather-tight• Add continuous insulation to meet the energy goals• Assess moisture transfer through shell• Design robust climate zone-appropriate assemblies
    • BasicConcept
    • SchematicDEEP
ENERGY
REDUCTION
RETROFIT
(AFTER) TYPICAL
EXISTING
BUILDING
(BEFORE) OPTIONAL
SOLAR
THERMAL OR
SOLAR
PHOTOVOLTAIC SO ADIN R) SH MM LA (SU SUPPLY
AIR R G E PAS SIVE HEA 
S T
GA OLAR (WIN IN TER S EXTRACT
AIR )RETROFIT
CONDITION EXISTING
CONDITION INTERNAL-
ADVANCED
WINDOWS -
INSUFFICIENT
INSULATION HEAT
GAINS

AND
DOORS -
LOW-PERFORMANCE -
PEOPLE-
AIR-TIGHTNESS
LAYER 

WINDOWS
AND
DOORS -
EQUIPMT.-
CONTINUOUS
INSULATION -
AIR
LEAKAGE

PACKAGE -
NO
VENTILATION EXHAUST AIR-INTAKERETROFIT
CONDITION EXISTING
CONDITION HEAT-RECOVERY LARGE
"ACTIVE"-
WATER
PROOFING -
NO
WATER
PROOFING VENTILATION
& MECHANICAL
SYSTEM

AND
MANAGEMENT 

AND
MANAGEMENT SMALL
HEATER -
FURNACE
OR
BOILER-
ADDED
INSULATION -
NO
INSULATION
AT
AND-
MITIGATION
OF 

BELOW
GRADE

THERMAL
BRIDGES -
THERMAL
BRIDGES
    • First Floor Plan 1. Entry 2. Powder room 3. Mud room/ laundry 4. Living room DN8 1 2 3 9 5. Kitchen 6. Dining area 7. Family area UP DN 8. Covered entry DN 9. Rear entry 10.Patio 6 10 4 5 7 N 0 2 4 8
    • Basement Floor Plan 1. Homeschool Room 2. Mechanical 3. Unexcavated 3 UP1 2 3
    • Second Floor Plan 1. Bedroom 1 2. Bedroom 2 3. Master BR 1 4. Master Clo. 5. Master Bath 6. Bedroom 3 7. Kid’s Bath 8. Toilet Room 27 86 4 3 5 7
    • TYPICAL VENTED COLD ROOF ASSEMBLY (R-77) TRUSS BEARING Typical NOTE: REMOVE EXISTING ROOF STRUCTURE, BUILD PERIMETER KNEE WALL AND SET NEW TRUSSED HIP ROOF PER STRUCTURAL DRAWINGS EXTERIOR • STANDING SEAM METAL ROOFING @ 16" O.C. • GRACE ICE & WATER SHIELD HT ROOFING UNDERLAYMENT, Assemblies WEATHER RESISTANT BARRIER • 3/4" PLYWOOD STRUCTURAL SHEATHING • ATTIC AIRSPACE, OR VENT CHUTES • STRUC. TRUSSES @ 24" O.C. WITH MIN. 20" CELLULOSE INSULATION • 5/8" OSB SHEATHING, SEAL JOINTS AIRTIGHT VAPOR BARRIER, AIRTIGHTNESS LAYER • 6" INSTALLATION CAVITY WITH SUSPENSION SYSTEM • 5/8" WALLBOARD CEILING INTERIOR @ OUTSIDE OF STUDWALL • Walls a/ grade: R-44 SNOW GUARDS PER MANUF. 20" MAINTAIN CONT. AIR BARRIER W/ SIGA VENT CHUTES BRAND TAPE AT SHEATHING TO TOP PLATE • Walls b/ grade: R-30+ 10 3/4" 2 T.O. KNEEWALL +1-8" CLEAR 10 5 1/2" • Roof: R-77 7" CONT. VENTING GUTTER EXIST. ROOF FRAMING 24" TO BE DEMOD 9 1/4" • Slab: R-25 MAINTAIN CONT. AIR BARRIER W/ SIGA BRAND TAPE AT SHEATHING TO TOP PLATE 1 1/2" T.O. ADDITION R.O.s +0-0 1/2" RETROFIT FRAMING T.O. EXISTING WALL 0-0" EXIST. WALL T.O. EXISTING R.O. ± 9 1/4" -0-3" RETROFIT WALL EXIST. WALL TYPICAL ABOVE GRADE WALL RETROFIT (R-44) INTERIOR • EXISTING WALLBOARD & FINISH TYPICAL ABOVE GRADE RETROFIT (R-44) • EXISTING FRAMING WITH 3-1/2" DENSE PACK INSULATION, 3.5 LBS/ CU FT ASSUMED EXISTING WALL ASSEMBLY • EXISTING SHEATHING INTERIOR • 5/8" OSB SHEATHING: SEAL JOINTS AIRTIGHT • PLASTER VAPOR BARRIER, AIRTIGHTNESS LAYER • WALLBOARD • 9-1/2" I-JOIST FURR FRAMING @ 24 O.C. WITH • 2X4 FRAMING, DENSE-PACK CELLULOSE INSULATION, 3.5 LBS/ CU FT DENSE-PACK WITH CELLULOSE INSULATION (ADDED) • 1/2" BUILDRITE SHEATHING 3.5 LBS/ CU FT • WINDWASH BARRIER • EXTERIOR SHEATHING WEATHER RESISTANT BARRIER • 3/4" VENT SPACE (1X FRAMING) RETROFIT WALL ASSEMBLY • CEMENT BOARD LAP SIDING • 5/8" OSB SHEATHING: SEAL JOINTS AIRTIGHT EXTERIOR VAPOR BARRIER, AIRTIGHTNESS LAYER CONTINUOUS 5/8" SHEATHING • 9-1/2" I-JOIST FURR FRAMING @ EXIST. STUDS WITH CONNECTS EXISTING AND NEW CONSTRUCTION DENSE-PACK CELLULOSE INSULATION, 3.5 LBS/ CU FT VAPOR BARRIER & AIRTIGHTNESS LAYER WEATHER RESISTANT BARRIER (WRB) • 1/2" FIBERBOARD SHEATHING (BILDRITE OR SIM.) AIRTIGHTNESS LAYER & VAPOR RETARDER (AB & VR) • WINDWASH BARRIER WEATHER RESISTANT BARRIER • 3/4" VENT SPACE (1X FRAMING) • CEMENT BOARD LAP SIDING EXTERIOR INSECT SCREEN7-1/2" TRIM BACKFILL TYPICAL SLAB RETROFIT (R-25) NOTE: REMOVE EXISTING SLAB & EXCAVATE TO ACCOMODATE RETROFIT ASSEMBLY INTERIOR • 4" CONCRETE SLAB WITH RADIANT IN-FLOOR HEATING SYSTEM • 6-MIL POLY TYPICAL BELOW GRADE RETROFIT (R-40) VAPOR BARRIER & AIRTIGHTNESS LAYER SEAL AIRTIGHT AT ALL JOINTS AND PROTRUSIONS INTERIOR • 6" BELOW GRADE EPS INSULATION BOARD, • 5/8" WALL BOARD COMPRESSIVE STRENGTH PER SE • 3-1/2" STEEL FRAMING @ 24" O.C. WITH • MIN. 2" GRAVEL MIN. 2" CLOSED CELL SPRAY FOAM INSULATION EXTERIOR VAPOR BARRIER & AIRTIGHTNESS LAYER • EXIST. CONCRETE WALL • (2) 3" EXTERIOR GRADE EPS INSULATION (EIFS) • STO FLEXYL (EIFS) WEATHER RESISTANT BARRIER & FINISH (TIE TO FACE OF FOOTING) EXTERIOR
    • Value Engineering Hea$ngTransmi$onLosses 2%$ Walls$a/g$ 34%$ Walls$b/g$ 32%$ Roof$ Slab$ Windows$ 7%$ 15%$ Doors$ 10%$
    • Energy Balance Hea)ng&Energy&Use&vs.&Input& 12000.00# 10000.00# Ac7ve#Hea7ng# 8000.00# Internal#Gains#kWh/a& 6000.00# Solar#Gains# 4000.00# Ven7la7on#Losses# 2000.00# Transmission#Losses# 0.00# Losses#in#kWh/a# Gains#in#kWh/a#
    • Performance NumbersSpecific Space Heat Demand:24 kWh/m2 a [7.6 kBTU/ft² a]Heating Load:19 W/m2 [6.0 Btu/h/ft²] ≤25 ≤130.83.75 kW [12.8 kBtu]Specific Primary Energy Demand:115 kWh/m2 a [36.5 kBTU/ft² a] QP ≤ 120 kWh/m2a + ((QH - 15 kWh/(m2a)) * 1.2)
    • Mechanical Response
    • What does it all look like?
    • ≤1.0 Airtightness 0.88 ACH50 [267 CFM50]
    • 2011
    • What are we thinking? }• Structure ✓• Weather Barrier ✓• Insulation ✓• Airtightness ✓• Moisture Management ✓• Ventilation/ Air Quality ✓• Comfort ✓ HOLISTIC• Daylight ✓ DESIGN• Durability (50-100 years) ✓• Design ✓• Lifecycle Cost ✓• Environmental Impact ✓• Deconstructability ✓
    • Thank you! testudio.comminnePHithouse.com