I thought I had already answered this one but I can’t find it, so here goes…

Is sealant required around a fire door frame – where it meets the sheetrock?

I’ve seen this both ways in the field – frames with a bead of sealant around the perimeter on both sides, and frames without.  Which is correct?  (Note: If anyone can send me a good photo of either of these conditions – with or without sealant – I’d really appreciate it!)

This turned out to be an easy one because it is specifically addressed in Steelcraft’s listings.  Other manufacturers’ listings may vary, so it’s best to check with the specific manufacturer for the applicable information.

Steelcraft’s listings say:

• Standard wood and steel stud installations require the gypsum board to extend at least 1/2-inch into the throat of the frame.
• If the wall construction consists of multiple layers of gypsum board on each side of the stud, at least one sheet must extend into the throat of the frame 1/2-inch on each side.
• Sealant is not required were the frame backbend meets the gypsum board.
• If sealant (caulking) is used to seal between the frame and gypsum board the rating of the frame is not affected. The sealant used should be a listed caulk, pure silicone caulk, or other caulking type compound approved for use on fire-rated assemblies.
• If the gypsum board does not extend 1/2-inch into the throat of the frame an intumescent fire caulk is recommended around the perimeter of the frame.

Here are some related posts in case you have additional questions about this:

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