2012 Challenge Participant:
BPC Green Builders
Applicants: Mike Trolle - Builder, Hayden McKay and James Gainfort - Homeowner
Project Address: New Fairfield, CT
Bdrms./Sq. Footage: 2 BD - 3052 sq ft
The James Gainfort & Hayden McKay Residence is a three bedroom, 3,310 square foot custom home built by BPC Green Builders. Located in New Fairfield, the lot is on a hill overlooking Candlewood Lake. The new house sits on the footprint of the original 60 year old house that was sustainably demolished, with significant recycling and some reuse.
- USGBC, LEED for Homes (Platinum target)
- EPA, ENERGY STAR® Homes Version 3.0
- DOE, Building America Partner
- EPA, Indoor airPLUS
Orientation and Envelope:
The home is designed to maximize solar shading through overhangs on east, south, and west facades. The windows feature: fiberglass frames, triple glazing, argon gas fill, two low-E coatings and a U-value of 0.20.
Insulation and Air Sealing:
- Double wall construction 2x6 exterior, 2x4 interior with offset studs; allows for continuous insulation without thermal bridging for 9.5” of blown cellulose, R-33.
- Blown cellulose fills the 9.5”rafters at the flat roof with an average R-33 value. In addition, tapered rigid foam board insulation has been installed over the top of the flat roof with an average R-Value of 38, for a total roof assembly of R-71.
- The house will be slab-on-grade with 4” foam board (R-20) on top of existing slab and under new slabs.
- To reduce air infiltration, all penetrations, joints, and cracks are caulked or foamed and rough openings around doors and windows filled with low expanding foam.
Heating, Cooling, and Hot Water:
A 94% AFUE high efficiency, condensing, propane-fired boiler will create hot water for both domestic use and space heating purposes. A combination of radiant tube floor heating on the 1st floor and a hydro-air system on the 2nd floor will provide the space heating. The cooling will be from a high-efficiency, 16 SEER, AC condenser.
Ventilation is provided by an energy recovery ventilator (ERV) which draws exhaust air from the bathrooms (and ventilates them) while simultaneously providing fresh air to the entire house.
The refrigerator, dishwasher and clothes washer will all be ENERGY STAR qualified.
- Solatubes bring natural light to interior corridors and walk-in closet.
- Daylight will be the primary source of light. The electric lighting will be a mixture of CFL and LED fixtures.
- Wireless lighting control system with multiple zones for maximum energy conservation.
Accommodations for future photovoltaic (PV) arrays have been designed on the roof. The domestic hot water system will be provided from the high efficiency boiler, but a solar thermal panel system has been designed for potential incorporation into the hot water system in the future.
Resources Sustainability Features:
- 100% of storm-water and roof runoff will be managed on site with 1500 gallon rainwater cisterns, vegetated spaces and permeable paving.
- Native, drought tolerant plantings will be added to the existing, sustainable landscape and gardens.
- Low VOC sealants, caulks, adhesives, primers and paints.
- Locally sourced, reused and repurposed landscape patio and walkway materials.
- Re-used maple flooring, cast iron whirlpool bathtub, concrete block for fill and retaining walls, cabinets, sinks for laundry room, door handles and hardware.
- Green demolition: full abatement of asbestos and lead. Off-site separation of clean debris.
- All insulated windows, doors and skylights removed and donated for use in other buildings. Cabinetry and energy efficient appliances donated for reuse.