August 25, 2022
Cassandra Gillespie

Air & Vapor Control Layers: Foundation Footings

Air & Vapor Control Layers Starting at the Footings

Water, vapor, air, thermal… the components that we have to think of when building a new home.


In order to build a home that will stand up to the elements over time, we have to have a dedicated plan for controlling each of these components. We recently broke ground on a new high performance home project, and after pouring the footings, we took an extra step you don’t usually see in new home construction. 


We utilized a product called Air-Shield LSR to seal the footings before pouring the rest of the foundation. Air-Shield LSR is a liquid synthetic rubber product that is an asphalt-free, synthetic rubber based liquid/vapor and liquid moisture barrier. It’s rolled out as a liquid which allows for a smooth and seamless application even on a rough surface, then cures to form a tough elastomeric membrane. The cured product is excellent at resisting air and moisture transmission through the membrane.

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