EnergyGuard™ HD Plus has an R-value of 2.5, the highest of any cover board (tested in accordance with ASTM C518) — and at 13 lb. respectively per 4’ x 8’ board, it’s a fraction of the weight of gypsum cover boards. With 110 psi compressive strength and a durable coated glass facer, EnergyGuard™ HD Plus is an ideal board for protecting your roof against the elements.
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