All Atlas ACFoam polyiso insulation boards are QualityMark™ certified, providing consumers an easy way to identify premium products that meet or exceed building codes for the best in roof performance. ACFoam delivers unparalleled performance and energy efficiency that’s built to last.

Dupont 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. It has clear film facings on both sides for added durability.

Styrofoam Boards are also designed for insulating interior basement walls, crawl spaces, and ceilings in both renovation and retrofit situations with precut insulation sheets and slotted edges that accommodate wood nailing strips that serve as a nailing base for drywall.