Perma “R” Brace SIB is a lightweight, 4-in-1 structural sheathing solution that provides four layers of enforced protection against water, moisture vapor, mold, and more. All the benefits of our Perma “R” Brace with the added value of our stable, R5 per nominal inch GPS (Graphite Polystyrene) rigid foam.

For installation convenience and exceptional, long-term performance, the all-in-one ZIP System® R-Sheathing panel provides a new approach to sealing and insulating the building envelope. One panel delivers thermal, air and moisture resistance, while providing excellent strength and durability.