

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The CertainTeed 654217 GCP Applied Technologies PERM-A-BARRIER is a fluid applied air and water barrier product that provides effective protection against moisture and air infiltration. This 52-gallon membrane is designed for application on approved construction surfaces, forming a durable, elastomeric sheet that helps reduce energy loss and prevents condensation issues.
This air barrier membrane allows walls to breathe, minimizing moisture buildup while acting as a drainage layer for liquid water.
Thanks for subscribing!
This email has been registered!