Fire Separation Wall

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Posted by: from Brampton
1/31/2020 at 6:19:36 PM

How to build a half hour fire separation wall? Is it ok to use regular half inch drywall on both sides of the 2 x 4 framing? Would insulation be needed if it is just for a half hour interior fire separation wall?

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Date/Time2/1/2020 at 3:04:37 AM

Every municipality has their own code you have to follow so you can give your city hall a ring and they will tell you the requirements.

In Niagara that's what we did though, it may have changed since the last time I did that was a year and a half ago. It always changes.

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Date/Time2/1/2020 at 8:54:13 AM

I recommend you give City Hall a call as well to be 100% correct depending on your municipality. However I strongly recommend you use 5/8 fire-rated drywall and install it right over top the existing drywall or plaster that is there. This would definitely give you half an hour of fire rated

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Date/Time2/1/2020 at 9:17:24 PM

I'm having to edit my reply. My original post was based on memory and now I have looked up the answer. It seems that 1/2" regular drywall with insulation will get you a half hour rating. Not sure if lightweight drywall would qualify - needs to meet ASTM C 36/C 38M Gypsum Wallboard or ASTM C 1396/C 1399M Gypsum Board

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