PDF Download Building Quality, Reducing Risk, and Mitigating Moisture QAP is a job site program that ensures proper materials, installation and inspection of the air and moisture barrier system. QAP by the Numbers What Does QAP Offer? Less Rework Minimized Liability Multi-Faceted Approach Integrated Components Proven Approach Mitigate Claims 23,000+ QAP Specified Projects 91 Million Certified and Registered Installers 2,705 Certified and Registered Installers