All products in the Atlas ACFoam® Polyiso Roof Insulation line are closed-cell, rigid foam board, flat or tapered insulation.
Atlas insulating sheathing materials are the most cost effective, energy efficient exterior wall insulation available in the marketplace.
Dow - Rigid Foam Insulation
Dow Rigid Foam Insulation replaces non-insulating above-grade sheathing products like plywood, fiberboard and OSB, and eliminates the need for additional air barriers such as housewrap.
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.