Insulated Concrete Forms from Cellox « »

Insulated Concrete Forms

Walls made from ICFs, which are essentially polystyrene molds filled with a 4- to 6-inch-thick concrete core, withstand flames for up to three hours longer than a wall framed with conventional lumber. Some ICF makers are increasing the fire-resistance of their products even further by adding special flame-retardant chemicals to the expanded polystyrene molds. Cellox LLC, Reedsburg, Wisconsin; 866-339-BLOX.
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