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Fire Door Gap

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KimWT

KimWT

Structural
Joined
Jul 15, 2003
Messages
71
Location
US
Hello!

When 2" or 3" wide gap between fire door frame and precast concrete wall happens, how can I fill up this gap?
I heard 2 or 3 hour fire-rated door needs special treatment.

Thanks!

Fire_Door-1_r8w7m5.jpg

Wolly.
 
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You wouldn't normally expect a 2 to 3" gap at that location... maybe 1/2". For a 2 or 3" gap, I'd expect some firestopping and maybe some intumescent caulk. Possibly a bent metal channel... part of a firerated assembly.

Dik
 
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