WHOLE-HOUSE AIR SEALING Comply with the following requirements when providing whole-house air sealing. Air leakage testing must be performed by a certified technician. Approved certifications include PTCS, BPI, HERS, and Weatherization Assistance Program trainings. The preliminary blower door test must occur immediately prior to the installation of whole-house air sealing. The post-installation blower door test must occur immediately following the installation of whole-house air sealing measures. . Seal all accessible and applicable items on the checklists in below. The following locations are considered “not accessible.” Where building structure or mechanically fastened materials block access. Top plates located adjacent to eave line. Top plates covered by more than five inches of loose-fill insulation or a combination of and batt insulation. Whole-house air sealing requires compliance with 0. If a combustion appliance is present in the home, perform a combustion appliance zone (CAZ) testing in accordance with 4. Whole-House Air Sealing Locations Table 7 - Attic Air Sealing Checklist Sealing requirements between conditioned and unconditioned space Item or the outdoors Install weatherstripping to create an effective air seal between the attic Attic hatch/door access frame and hatch/door. Install a gasket or weatherstripping between frame and door or install an Pull down stair cover airtight cover between the stairs and attic. Apply mastic, caulk, or other airtight seal around the perimeter of duct Duct penetrations boots between the boot and the ceiling. Install foam, caulking, and rigid barriers to the attic floor or wall. Near heat- producing devices, provide clearances to combustible materials and Chases use fire-rated materials as appropriate. Install foam, caulk or another airtight seal between fixture and ceiling. Or install airtight drywall box or another non-flammable air-sealed insulation Recessed cans (non-IC) box. Maintain a clearance on all sides and above the fixture. Extend 3” the box above the new insulation so that no insulation covers the top
WHOLE-HOUSE AIR SEALING Comply with the following requirements when providing whole-house air sealing. Air leakage testing must be performed by a certified technician. Approved certifications include PTCS, BPI, HERS, and Weatherization Assistance Program trainings. The preliminary blower door test must occur immediately prior to the installation of whole-house air sealing. The post-installation blower door test must occur immediately following the installation of whole-house air sealing measures. . Seal all accessible and applicable items on the checklists in below. The following locations are considered “not accessible.” Where building structure or mechanically fastened materials block access. Top plates located adjacent to eave line. Top plates covered by more than five inches of loose-fill insulation or a combination of and batt insulation. Whole-house air sealing requires compliance with 0. If a combustion appliance is present in the home, perform a combustion appliance zone (CAZ) testing in accordance with 4. Whole-House Air Sealing Locations Table 7 - Attic Air Sealing Checklist Item Sealing requirements between conditioned and unconditioned space or the outdoors Attic hatch/door Install weatherstripping to create an effective air seal between the attic access frame and hatch/door. Pull down stair cover Install a gasket or weatherstripping between frame and door or install an airtight cover between the stairs and attic. Duct penetrations Apply mastic, caulk, or other airtight seal around the perimeter of duct boots between the boot and the ceiling. Chases Install foam, caulking, and rigid barriers to the attic floor or wall. Near heat- producing devices, provide clearances to combustible materials and use fire-rated materials as appropriate. Recessed cans (non-IC) Install foam, caulk or another airtight seal between fixture and ceiling. Or install airtight drywall box or another non-flammable air-sealed insulation box. Maintain a 3” clearance on all sides and above the fixture. Extend the box above the new insulation so that no insulation covers the top
04_01_2014_BPA_Wx_Specifications_FINAL.docx