06/17/2026
Want to know how sub-slab depressurization (ASD) keeps your indoor air safe? This quick read breaks down the four main components: suction pits, PVC piping, a continuously operating fan, and a safe discharge point away from windows and intakes. Learn more in our short article — a great intro for homeowners and building managers. https://wix.to/F3D9h1N
1. Suction pit(s): One or more holes drilled through the concrete slab to access the aggregate layer beneath2. Piping: PVC pipe routed from the suction pit(s) through the building and to the exterior3. Fan: A continuously operating fan that maintains negative pressure beneath the slab4. Discharge po...
