Foil Faced Rigid Insulation Fire Rating

Thermax sheathing specially designed to hold a class a fire rating.

Foil faced rigid insulation fire rating.

Rigid polyurethane and polyisocyanurate foams are effective insulation materials that can be used by architects builders and contractors to meet today s stringent energy code requirements 1 depending on product specific composition factors the fire performance characteristics of polyurethane. Roxul safe is a lightweight semi rigid stone wool insulation that provides superior fire resistance and sound control. The surface burning characteristics of ecotouch insulation were derived from products tested in accordance with astm e84. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same.

Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck. This standard is used solely to measure and describe properties of products in response to heat and flame under controlled laboratory conditions and should not be used to describe or approve the fire hazard of materials under actual fire conditions. Thermax sheathing is a nonstructural rigid board insulation with a glass fiber infused polyisocyanurate foam core laminated between 1 0 mil smooth reflective aluminum faces. It is constructed from closed cell polyisocyanurate foam core bonded on each side to aluminum foil facers during the manufacturing process.

The other is a tri plex facer consisting of a three ply laminate of durable kraft. Thermax sheathing can be installed exposed to the. The glass fiber reinforcement provides improved fire performance and dimensional stability. This wall covering must have a minimum fire rating to protect the insulation from quick combustion during a fire.

We suggest foil faced foam insulating board with the joints sealed with foil tape. 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. Rigid foam insulation whether it is expanded or extruded polystyrene does have to be covered if it is installed in the interior of a building. Depending on whether or not the foil backing on the existing foil backed gypsum board is perforated or not the perm rating of that surface could be near zero that is very resistant to moisture movement forming a moisture barrier in the wrong place.