Roe G. Cole Custom Design and Construction Co.
The process of ultra energy efficient construction begins in the initial planning and design phases. There are many building system and techniques we use and have developed to construct proven and tested homes and additions. The process tree is as follows:
· Site and placement of the structure, natural wind buffers when clearing the site, orientation to true solar south to maximize solar gains
· Design to minimize exposed glazing on the north face of the structure.
· Fenestration choices typically triple glazing with different types of coatings dependent of house orientation. Windows have an extremely high DP or design pressure
· The use of Thermomass insulation in the foundation with typically 4” of foam under the slabs
· Installation of HePex tubing in the slab for radiant heat, maximizes mass heating.
· The use of special sill sealing products and techniques to mitigate any air infiltration at foundation to structure.
· Installation of structural insulated panels or (SIP’s) for all exterior wall and roof areas. Typically, the rim joist area is also panelized as it is a weak area.
· Roof and window overhangs are calculated to maximize solar gains in the winter and reduce gains in the summertime.
· Roofing and siding choices are also critical, cold roof systems are installed to help maximize performance.
· The use of geothermal energy to heat (typically we can heat your home with your existing well water!) or high efficiency heat pumps.
· The use of heat pump stone lined hot water heaters, on demand electric hot water makers, heat pump clothes dryers (minimizing penetrations to exterior)
· Installation of ERV energy return ventilation is a must in a super tight. Fresh air is slowly introduced while recovering up to 85% of the energy as stale air is expelled.
· We try to use 100% LED lighting and all energy star appliances to reduce carbon foot print.
· Installation of PV solar array can bring our homes down to near zero operating cost!
· All homes are tested 2 times during construction and one final time after completion then certified by an independent HURS rater. The homes are then officially EnergyStar rated and will qualify for current state and federal rebates.
· Typically, we can calculate your anticipated energy costs before the house is even built. Structural insulated panel homes were developed by DOW foam back in the 60s and those test homes are still performing well even today.