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Certified Projects Database
No. 1121 Project Grant Residence Status Pre-certified
Lead CPHC Alan Abrams
Builder Jos. Klockner & Co. Location Derwood, MD
QA/QC Rater Architecture Planning Alan Abrams, AIBD, CPHC Mechanical Systems Designer Alan Abrams / Jim Conlon, Elysian Energy
Constr. Type Timber Bldg. Function Single Family Floor Area 1735
Project Type New Construction HERS Index LEED Rating
Energy Star Rating Heating Degree Days 4055 Cooling Degree Days 1531
Units 1 Certification Type PHIUS+ Certification Date
Exterior Wall 3.5" polyisocyanurate exo insulation Zip system 10" double stud with DB cellulose MemBrane GWB
Floor recycled concrete fill 4" sand 9" geofoam 4" concrete .75" floating wood
Roof 6" EPS nailbase Zip system 12" wood I-joist with DP cellulose MemBrane GWB
Window Frame Intus Eforte (UPVC)
Window Glazing Intus Eforte 3x (high SHGC)
Entrance Door ditto
Ventilation Zenhder Comfo 350
Heating System "Mr Slim" Mitsubishi HP
Submitter Alan Abrams
Air-tightness 0.6 ACH@50 PA
Cooling System "Mr Slim" Mitsubishi HP
Additional Consultants John Semmelhack CPHC / Erhan Tolu, PE
Additional Notes The principle challenge of the project is limited solar gain--site is wooded.

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