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No. 1160 Project 17 Carol Street Status Certified
Lead CPHC Chris Trolle
Builder Michael Trolle Location Danbury, CT
QA/QC Rater Karla Donnelly Architecture Planning Mike Trolle Mechanical Systems Designer Chris Trolle
Constr. Type Timber Bldg. Function Single Family Floor Area 1359
Project Type Retrofit HERS Index 35 LEED Rating
Energy Star Rating 3.0 Heating Degree Days 6011 Cooling Degree Days
Units 1 Certification Type PHIUS+ Certification Date February 17, 2014
Exterior Wall Framing is 2x6@24"oc; plywood sheathing with taped joints; cellulose insulation in stud cavities, plus two layers of continuous polyisocyanurate foam board to exterior. R54 assembly.
Floor Existing basement is unconditioned with 2x8 framed deck above. A new plywood subfloor has taped joints. Insulation between the joists is 2" of 2lb SPF, followed by 5.5" of 1/2lb SPF, with 2.5" of mineral wool board running continuously under the joists. R45 assembly New additions have a frost-protected shallow slab foundation over 12" of EPS foam board - R56.
Roof Rafters are 18" open-web trusses filled with dense-pack cellulose - R72. The attic has 24" of loose-blown cellulose - R92. The Interior underside of the trusses and attic joists is sheathed with 1/2" plywood with taped joints for air-sealing.
Window Frame uPVC with 0.12 u-value. Tilt-nTurn operation. Locking system is three-point with compressive seals on all sides.
Window Glazing Triple-glazing with argon gas fill and two low-e coatings. U-value of south-facing glazing is 0.11 with a 0.61 SHGC. U-value of west/north/east-facing glazing is 0.09 with a 0.49 SHGC.
Entrance Door uPVC door frame with frame u-value of 0.16. Locking system is three-point with compressive seals on all sides.
Ventilation Zehnder ComfoAir 200. Exhaust air is pulled from the bathrooms and kitchen. Filtered supply air is directed to the main living area.
Heating System 12,000 BTU Mitsubishi heat pump system provides conditioned air to the main living area. An 8" duct system and in-line Panasonic fan route conditioned air to the rest of the house.
Submitter Michael Trolle
Air-tightness 0.46 ACH50
Cooling System 12,000 BTU Mitsubishi heat pump system provides conditioned air to the main living area. An 8" duct system and in-line Panasonic fan route conditioned air to the rest of the house.
Additional Consultants
Additional Notes Mike and Chris are principals of BPC Green Builders which provides project management services for high-performance, green homes in the SW Connecticut region.

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