Attached is a method to make a fire rated attic hatch by lining the wood frame inside with drywall and trim the access panel to sit on top of the liner.
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Request: could you amend that graphic to show both a layer of ply and a gypsum layer for the access panel itself. Unless the panel has 5/8" type X at least around here, it would not be considered fire rated.
Even better show a sandwich:
5/8" type X drywall liner… underneath
5/8" type X underneath…
1/2" ply underneath…
2" of solid foam…
with edges primed and painted to avoid drywall dust and breakage.
Optional smoke seal gasket.
Bryce, send me a sketch or link of what you need.
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Here is a more detailed attic hatch with additional options such as:
- Air seal foam strip
- Reference to optional 5/8" Type X drywall
- Plywood backer for drywall access panel
- Foam board insulation for access panel
- Extension box to hold back insulation
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wow, just wow!!
what is the the air seal, is it like weather-strip on a door
Mark, yes a foam strip
Very nice graphic Randy, but I don’t think I would go as far as to call it Fire Rated. It does not have a classification from U.L. as a tested Fire Rated Assembly.
I think a Fire and smoke Resistive assembly would be more appropriate not to confuse any new and younger inspectors. Just like the ceiling with only one layer of type C drywall, is not a tested assembly.
Just my opinion.
You’re The Best!
