green retrofit for your home
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Steven Winter Associates, Inc.
Green Retrofit for Your Home
• Green Roundtable• September 12, 2009
• Mark Price• Steven Winter Associates, Inc.
Steven Winter Associates, Inc.
LEED AP + Homes Single Family – Custom Gut Rehab / Deep Energy Retrofit Multi-Family Public / BHA Consulting / Zero-Energy
Steven Winter Associates, Inc.
I assume:• You Have a home• You can (are authorized to) make changes
to your home• You want to conserve:
– Resources– Money– Energy– Carbon– Your home
Steven Winter Associates, Inc.
• “The practice of increasing the efficiency with which buildings and their sites use and harvest energy, water, and materials, and reducing building impacts on human health and the environment, through better siting, design, construction, operation, maintenance, and removal.” - Wikipedia
What is Green?
Steven Winter Associates, Inc.
What is Green?• Efficient
– Use of materials– Use of energy/water– The greenest building is the one you don’t
have to build• Thinking of impacts beyond cost• Healthy/Safe• Good Building
– Best practices– Smart
Steven Winter Associates, Inc.
Climate Change
• Source: US EPA
• www.epa.gov/climatechange/science
Steven Winter Associates, Inc.
Top 7 Environmental Impacts:• 1. Cars and light trucks• 2. Meat and poultry production• 3. Fruit, vegetable and grain production• 4. Home heating, hot water and air conditioning• 5. Household appliance and lighting use• 6. Home construction• 7. Household water and sewage• From The Consumer’s Guide to Effective
Environmental Choices, Brower and Leon, Three Rivers Press 1999
Steven Winter Associates, Inc.
Minimize demand for water / chemicals
No invasive speciesLow water Landscaping
Steven Winter Associates, Inc.
Reduce local heat island effects
Reducing/Shading of Hardscapes
Steven Winter Associates, Inc.
Use rainwater or reuse greywater.
Water Re-use
Steven Winter Associates, Inc.
Minimize water demand for landscape irrigation.
High-efficiency Irrigation System when used
Steven Winter Associates, Inc.
Minimize water demand for indoor use.
Efficient Indoor Water Use
•Toilets: 1.3 GPF Showerheads: 1.75 GPM Faucet aerators: 1.0-.5 GPM
Steven Winter Associates, Inc.
Increase the service life of the building – durability planning
Steven Winter Associates, Inc.
Rain screen wall assembly
Steven Winter Associates, Inc.
Air/thermal barrier continuity
Thermal bypass checklist – Build tight, ventilate right
Steven Winter Associates, Inc.
Minimize air leakage into and out of conditioned space.
Blower Door Test• Depressurizes the
house• Measures how well
the house contains pressure
• Find the leaks
Steven Winter Associates, Inc.
Use high performance windows
For comfort, durability, and energy savings
Steven Winter Associates, Inc.
Minimize leaks in heating and cooling distribution systems.
Steven Winter Associates, Inc.
Use high performance HVAC equipment
Steven Winter Associates, Inc.
Size HVAC equipment properly
Sized with Manual J – Required by code, but rarely done.
Steven Winter Associates, Inc.
Charge refrigerant properly
Refrigerant charge/ air flow verified
Steven Winter Associates, Inc.
Efficient water distribution system & Equipment.
EA 7: Water Heating
Steven Winter Associates, Inc.
Minimize lighting & appliance energy demand.
ENERGY STAR labeled fixtures & appliances
Steven Winter Associates, Inc.
Use renewable electric generation system.
Renewable energy
Steven Winter Associates, Inc.
Use framing materials efficiently.
4’4’
4’4’
4’
24-in
ch g
rid
4’
4’
Plywoodsoffit
16”
2” ventstrip
4’
8’
16” 16” 16”
2 strips of plywood4 feet wide and1 strip 2 feet wide
2’-10”
16’-2” *9’-7”
19’-2” *
Cut plywoodsheet into equalstrips for soffitassembly. Paint/seal upper andlower surfacesof soffit as wellas edges.
* The 2"dimensioncomes fromassumingthat 1" thickinsulationsheathing isinstalled overframing.
Efficient framing techniques
Steven Winter Associates, Inc.
Use environmentally preferable products
• Luan plywood is considered tropical!– Cabinets, hollow-core doors, floor
underlayment, pull down stairs
Tropical Hardwood FSC-Certified
Steven Winter Associates, Inc.
Minimize leakage of combustion gases
Combustion Venting
Steven Winter Associates, Inc.
Outdoor air ventilation
Meets ASHRAE 62.2
Steven Winter Associates, Inc.
Ensure supply air is distributed to conditioned spaces.
Supply Air Distribution (Manual D)
Steven Winter Associates, Inc.
Reduce exposure to airborne particulates that affect
respiration
Supply Air Filtration
Steven Winter Associates, Inc.
Protect occupants from exposure to contaminants.
Contaminant Control
Steven Winter Associates, Inc.
EPA Radon Zones in southern
New England
RED = Zone 1Orange = Zone 2Yellow = Zone 3
Steven Winter Associates, Inc.
USGBC Green Home Guide: REGREEN
• Based on the LEED • for Homes Standard• http://• www.greenhomeguide.org/
Steven Winter Associates, Inc.
Thanks!
• Mark Price• Steven Winter Associates, Inc.
• mprice@swinter.com• www.swinter.com
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