Technical Guides
Passive House in the US: PHI vs Phius Certifica...
How the two US Passive House certification routes, PHI and Phius CORE/ZERO, differ, what each requires for airtightness (0.6 ACH50 vs 0.060 CFM50/ft²), and why testing a continuous air barrier...
Passive House in the US: PHI vs Phius Certifica...
How the two US Passive House certification routes, PHI and Phius CORE/ZERO, differ, what each requires for airtightness (0.6 ACH50 vs 0.060 CFM50/ft²), and why testing a continuous air barrier...
Fluid-Applied Air Barrier vs. Housewrap and Sel...
WRB or air barrier? How mechanically fastened housewrap, self-adhered sheet membranes and fluid-applied barriers perform at laps, fasteners, penetrations, rough openings and CMU, plus installation, weather, cost and an inspection...
Fluid-Applied Air Barrier vs. Housewrap and Sel...
WRB or air barrier? How mechanically fastened housewrap, self-adhered sheet membranes and fluid-applied barriers perform at laps, fasteners, penetrations, rough openings and CMU, plus installation, weather, cost and an inspection...
Vapor Retarder Class by Climate Zone: A Practic...
Class I, II and III vapor retarders explained in perms, what the 2021 IRC R702.7 permits in each IECC climate zone, the Class III continuous insulation option, why interior poly...
Vapor Retarder Class by Climate Zone: A Practic...
Class I, II and III vapor retarders explained in perms, what the 2021 IRC R702.7 permits in each IECC climate zone, the Class III continuous insulation option, why interior poly...
Continuous Air Barrier Code Requirements: IECC,...
What US energy codes require for a continuous air barrier: residential blower-door ACH50 limits in the 2021 and 2024 IECC, the commercial material, assembly and whole-building testing paths, ASHRAE 90.1,...
Continuous Air Barrier Code Requirements: IECC,...
What US energy codes require for a continuous air barrier: residential blower-door ACH50 limits in the 2021 and 2024 IECC, the commercial material, assembly and whole-building testing paths, ASHRAE 90.1,...
Radon Barrier Membranes: Where They Fit in Rado...
What radon is, the EPA 4 pCi/L action level, how soil gas gets into buildings, IRC Appendix F and radon-resistant new construction, sub-slab depressurization, and how a continuous fluid-applied membrane...
Radon Barrier Membranes: Where They Fit in Rado...
What radon is, the EPA 4 pCi/L action level, how soil gas gets into buildings, IRC Appendix F and radon-resistant new construction, sub-slab depressurization, and how a continuous fluid-applied membrane...