Quote:
Originally Posted by retiredguy123
I find it difficult to believe that any commercially available folding attic stair assembly would not comply with the building code. Retrofitting the attic space between the garage attic and the living space attic to create a firewall would be very difficult and expensive mostly because of the lack of access to the attic. Also, you would most likely end up with gaps that would defeat the purpose.
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Look for certification/label it meets minimum 3/8-inch (9.53 mm) (nominal) fire-retardant-treated structural panel is deemed to meet the 20-minute thermal barrier test based on ASTM E 119, Test Methods for Fire Tests of Building Construction and Materials, or deemed to have the fire resistance of or equivalent to ½-inch (12.7 mm) gypsum wall board.