The recommended insulation for most attics is about R-38 or 10 to 14 inches deep, depending on the type of insulation you choose. BTW, is your hatch insulated, too? Use 4-inch-thick foam board glued to the top.
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The recommended insulation for most attics is about R-38 or 10 to 14 inches deep, depending on the type of insulation you choose. BTW, is your hatch insulated, too? Use 4-inch-thick foam board glued to the top.