Thermax Wall System from Dow Building Solutions has introduced a cold-weather polyurethane spray foam that cures quickly while offering application control and consistency. The formula can be used at ambient temperatures of 30 to 70 F and substrate temperatures of 30 to 60 F. The wall system replaces cavity batts with 1 1/2 inches of insulation foam sealant and encloses the steel frame with 1 to 3 inches of continuous moisture-resistive, insulated sheathing.

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