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No. 1397 Project Shafer Residence Passive House Status Pre-certified
Lead CPHC
Builder Oak Tree Homes Location Wilton, IA
QA/QC Rater Architecture Planning Oak Tree Homes Mechanical Systems Designer
Constr. Type Timber Bldg. Function Single Family Floor Area 1817
Project Type New Construction HERS Index LEED Rating
Energy Star Rating Heating Degree Days 5206 Cooling Degree Days 1396
Units 1 Certification Type PHIUS+2015 Certification Date
Exterior Wall Fiberglass-insulated timber I-Joist over plywood air barrier, over fiberglass-insulated 2x4 bearing and utility wall (“Klingenberg wall”).
Floor Slab-on-grade with continuous subslab rigid insulation.
Roof Timber roof trusses with blown-in fiberglass insulation.
Window Frame uPVC 8-chamber frame with composite aluminum structural reinforcement, internally insulated.
Window Glazing Triple-glazed Low-E, warm-edge spacer, low SHGC.
Entrance Door uPVC 6-chamber frame, insulated flush slabs.
Ventilation
Heating System
Submitter Grahm Balkany
Air-tightness .01 cfm/ft2 Envelope Area (.35 ACH50)
Cooling System
Additional Consultants Grahm Balkany, AIA, CPHC
Additional Notes

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