DuPont Tuff-R™ Insulation (4X8 1/2 3.3RV)

Made for new frame walls or retrofit of existing walls in residential construction, Tuff-R^™ features a high-performance foam core sandwiched between durable exterior facers. Rigid and water resistant, Tuff-R^™ works in both interior and exterior walls.

Tuff-R^™ Polyisocyanurate Insulation consists of high-performance, high R-value, closed-cell polyisocyanurate foam core boards sandwiched between a choice of durable exterior foil facers. On Tuff-R^™ Insulation, one facer is a continuous sheet of aluminum foil; the other is a durable tri-laminate facerconsisting of aluminum foil, kraft and metalized polyester film. Tuff-R^™ helps reduce air infiltration through the wall by covering cracks between the framing members and sealing tightly against the studs.