Help Make Passive Building Mainstream Support PHIUS
Certified Projects Database
No. 1591 Project Larson Passive House Status Pre-certified
Lead CPHC Michael Nolan
Builder Oak Tree Homes Location Indianola, IA
QA/QC Rater David Holtzclaw Architecture Planning Horizon Architecture Mechanical Systems Designer TBD
Constr. Type Timber Bldg. Function Single Family Floor Area 2112
Project Type New Construction HERS Index LEED Rating
Energy Star Rating Heating Degree Days 212 Cooling Degree Days 153
Units 1 Certification Type PHIUS+2015 Certification Date
Exterior Wall LP Smartside | Tyvek (weather and bulk water barrier) | 1/2" plywood | 9.5" TJI with dense pack cellulose | OSB (Taped, air barrier) | 2x4 stud with ocSPF | 1/2" GWB. R-50, vapor open wall system.
Floor Slab on Grade - 4" concrete | 15 Mil Stego Barrier | 3" XPS Insulation | 4" Clean stone. (R-15) Frost Foundation wall - Superior Wall Xi with 1.5" XPS exterior insulation to 42" below grade (R-20)
Roof Asphalt Shingles. 24" Blown Cellulose over 1/2" OSB (air barrier) and 1/2" GWB (R-80)
Window Frame UPVC Schuco LIving MD82
Window Glazing Triple Glazed Schuco
Entrance Door Schuco Living MD82
Ventilation Zehnder ComfoAire 350
Heating System Ducted Mini-Split
Submitter Michael Nolan
Air-tightness 0.04 cfm/sf @ 50Pa or 0.83 ACH50 (Target)
Cooling System Ducted Mini-Split
Additional Consultants
Additional Notes

Subscribe to our Newsletters

YouTube Follow us on Twitter We're on Facebook PHIUS Blog

© 2019 Passive House Alliance. All Rights Reserved. HOME | PRIVACY | BLOG | CONTACT US