Passive House II, The Design Process. Ray Rebilas, AIA - Kitchen & Associates. Harry Moody - Pennrose Properties. Mike Ferguson - S.B.

Passive House II, The Design Process Ray Rebilas, AIA - Kitchen & Associates Harry Moody - Pennrose Properties Mike Ferguson - S.B. Conrad Adam Blackburn, CPHC Innova Sevices Corporation David Salamon, CPHD Re:Vision Architecture Homes Within Reach, 2016

PASSIVE HOUSE PRINCIPLES

BUILDING SCIENCE PRINCIPLES

ENERGY MODELLING

ENERGY MODELLING Passive House Planning Package (PHPP) Wärme- Und Feuchtetransport Instationär (WUFI) Transient heat and moisture transport

ENERGY MODELLING Optimizing the Envelope Roof: R-29 SHGC: 0.27 SHGC: 0.27 25% Window Wall Ratio 50% Window Wall Ratio Wall: R-28 0.15 ACH nat Underslab: 2 XPS insul (R-10) 6 from perimeter

ENERGY MODELLING Optimizing the Envelope Roof: R-45 (R-29) SHGC: 0.27 (Unchanged) SHGC: 0.5 (0.27) 23% (25%) Window Wall Ratio 40% (50%) Window Wall Ratio Wall: R-40 (R-28) 0.05 cfm/ft2 (0.15 ACH nat) 2 R-30 Continuous (R-10 @ 6 Perimeter)

RETROFITTING EXISTING DESIGNS

DESIGN RETROFIT TYPICAL DOUBLE LOADED CORRIDOR db(a) = <25? db(a) = <25?

DESIGN RETROFIT TYPICAL DOUBLE LOADED CORRIDOR

DESIGN RETROFIT

PASSIVE HOUSE BOUNDARY

CONSTRUCTION DETAILING

THERMAL CONTINUOUS BRIDGE AIR BARRIER FREE Details courtesy of 475 High Performance Building Supply

AIR SEALING

VENTILATION WITH ENERGY RECOVERY

HEATING & COOLING

WINDOWS & DOORS

CHANGING STANDARDS

PASSIVE HOUSE VS. ENERGY STAR: INSPECTIONS AND TESTING For both programs, General Contractor orientation and subcontractor buy-in is key. At Sacred Heart, both the Project Manager and Superintendent from S.B. Conrad, Inc. completed Passive House Tradesperson training Subcontractors received on-site training from materials suppliers

PASSIVE HOUSE VS. ENERGY STAR: INSPECTIONS AND TESTING Energy Star for Multifamily High Rise No rater credentials required; two paths EPA-mandated documentation Documentation is reviewed by EPA Testing and Verification spreadsheets Performance Path Calculator Modeling files (if Performance Path) Proposed Submittal and As-Built Submittal Blower door testing, duct leakage testing, air flow testing Photo documentation Certification by EPA

PASSIVE HOUSE VS. ENERGY STAR: INSPECTIONS AND TESTING Passive House Certification (by CPHC/D) vs. Verification (by Rater/Verifier) o CPHD: David Salamon/Re:Vision Architecture o Rater/Verifier: Innova Services Corporation PHI vs. PHIUS

PASSIVE HOUSE VS. ENERGY STAR: INSPECTIONS AND TESTING Passive House PHI: No rater credentials required Airtightness per EN ISO 13829 o PHA Guidance Document Passive House Blower Door Testing Guidelines, Greenbuild 2013 Ventilation system TAB Declaration of the Construction Supervisor

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences Slab insulation Foundation insulation Continuity of vapor barrier

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences ZIP system Dog houses

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences Window Installation Duct Sealing

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences Spray foam insulation 4th Floor ceiling Truss pockets/band area Garage ceiling

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences Exterior Rigid Insulation

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences Preliminary blower door testing Multi-point depressurization and pressurization (per EN ISO 13829; same for both PHI and PHIUS+) Testing consultant Kohta Ueno of Building Science Corporation

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences Preliminary blower door testing Great result at depressurization = 0.48 ACH50 Not so great at pressurization 0.70 ACH50 Did something flap open? Above and Right: Kohta Ueno courtesy of Building Science Corporation

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences Preliminary blower door testing Did something flap open? Maybe something strange happening with ERV O/A intake on roof Above: Building Science Corporation

PASSIVE HOUSE INSPECTIONS AND TESTING - Sacred Heart Residences Preliminary blower door testing Depressurization test = 5,158 CFM50 Pressurization test = 8,701 CFM50 Average = 6,929 CFM50 = 0.6 ACH50 = PASS Greater leakage under pressurization points to a single point of leakage o o o o N-value (flow exponent) of 0.55 indicates laminar flow of leakage rather than turbulent indicating a large open hole rather than multiple small leaks Otherwise, leaks would have shown up under depressurization, as well Consider building components that may be acting as a one-way valve; e.g. louver blades Analysis underway by Innova, Building Science Corporation and Gary Nelson of Energy Conservatory Sacred Heart still meets Passive House certification performance standard Building Science Corporation

PASSIVE HOUSE CONSTRUCTION - Sacred Heart Residences Under Slab Insulation

PASSIVE HOUSE CONSTRUCTION - Sacred Heart Residences Foundation Wall Insulation

PASSIVE HOUSE CONSTRUCTION - Sacred Heart Residences Exterior Wall Insulation

PASSIVE HOUSE CONSTRUCTION - Sacred Heart Residences Spray Foam Insulation

PASSIVE HOUSE CONSTRUCTION - Sacred Heart Residences Expanding Foam Tape

PASSIVE HOUSE CONSTRUCTION - Sacred Heart Residences Prosoco Spray

Thank You!