Dow's Thermax Sheathing Polyisocyanurate Rigid Insulation Board delivers dependable R-value over time, even in extreme temperature conditions. Whether used in new construction or for retrofitting, Thermax helps to increase energy efficiency and reduce heating and cooling costs. Its quick and easy installation process saves both time and labor, making it a convenient solution for improving wall performance. With Thermax sheathing, you get a durable, long-lasting insulation solution designed to stand up to tough building challenges.
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