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No. 1500 Project Harrison Street Infill Status Pre-certified
Lead CPHC Robin McGrew
Builder AllenBuilt, Inc. Location Washington, DC
QA/QC Rater Chris Conway Architecture Planning Robin McGrew, Architect, CPHC Mechanical Systems Designer John Semmelhack
Constr. Type Mixed timber-masonry Bldg. Function Single Family Floor Area 3650
Project Type New Construction HERS Index LEED Rating
Energy Star Rating Heating Degree Days Cooling Degree Days
Units 2 Certification Type PHIUS+2015 Certification Date
Exterior Wall 2x6 wall w/ high density blown fiberglass, 1/2" Densglass Gold fiberglass mat gypsum sheathing and 4" EPS insulation (StoTherm ci); 10" concrete foundation wall w/ 2" exterior EPS and 2x4 furred wall with 4" high density blown fiberglass.
Floor 4" concrete on 15 mil Stego wrap on 5" EPS, 2" EPS at sides of footers.
Roof 2x12 rafters wth 3/4" taped OSB sheathing and 11" high density blown fiberglass, Hunter Cool Max roofing panel with 3.5 polyiso insulation and 3/4" plywood sheathing
Window Frame Zola Thermo Plus uPVC frames, fixed and tilt -turn casements, frame U value 0.18
Window Glazing SHGC .53 at all exposures; triple glazed, U value 0.12
Entrance Door Zola Thermo Wood, frame U value 0.19
Ventilation pair Renewaire ERVs EV90P
Heating System Fujitsu variable speed air source mini-split heat pump, 2x 1 ton ducted at main house, 3/4 ton ductless at one-bedroom apartment unit
Submitter Robin McGrew
Air-tightness 0.045 cfm/sf (modeled)
Cooling System Fujitsu variable speed air source mini-split heat pump, 2x 1 ton ducted at main house, 3/4 ton ductless at one-bedroom apartment unit
Additional Consultants Peabody Architects
Additional Notes

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