Fire Separation

[dsmith1]

Does it matter which side of the gypsum board is exposed in a fire separation?

[scosta]

Im not sure about that, but I believe the joints should be taped and mudded.

[ccbrands1]

Originally Posted by scosta

Im not sure about that, but I believe the joints should be taped and mudded.

correct.

[gbrasseur]

David,
On sheetrock there is a "finished" side and a "non finished" side. I don't believe it matters which side (non aesthetic in this case) is exposed, so long as it is taped and mudded.

[David P. Valley]

Originally Posted by dsmith1

Does it matter which side of the gypsum board is exposed in a fire separation?

Now that the labels are exposed, make sure it's 5/8 in. fire rated gypsum board.

[David P. Valley]

Originally Posted by scosta

Im not sure about that, but I believe the joints should be taped and mudded.

Not all jurisdictions require tape and mud at the seams.

[dsmith1]

In my jurisdiction tape and mud is not required. Two layers with staggered joints are required. Just wondering if finished side out or in made a difference. Yes, I missed a chance to see if it was fire rated.

Thanks for the responses.

[thejnicki]

That sheetrocker was saving time, he got both those angles out of one sheet.. But brown side out is not a killer on a draft stop of unseen gable. The joints have to be taped to complete a rated system, that is how fire rated assemblies are tested at GP,USG, Etc..