Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

I've seen some people recommend that cement board be glued and screwed to the stud framing for wall and ceiling application.

I haven't seen this recommendation on any of the manufacturers install specs, but it seems to come up often enough in DIY and other web communities as a way to keep the board fixed and rigid with the framing.

share|improve this question
add comment

1 Answer 1

up vote 16 down vote accepted

Yes, but not just for rigidity.

Cement board is made of, well, cement - and cement is brittle.

When you screw the cement board in you create a pressure point or stress point. Even though the board is screwed in with lots and lots of screws, each screw hole is a stress point prone to breakage.

By gluing the board as well as screwing, you ensure that a much larger surface area of the board ultimately bonds to the wood (as the glue cures) - which means that if a single stress point fails, it won't matter, because the glue holds the board tight where the screw hole may have failed.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.