A co-worker of mine is putting some tile down in his bathroom and it was reccommended that he glue and screw the cement backer board to the subfloor. He is concerned that if they eventually pull up the tile they will have a huge mess ripping up the sub floor.
I’m sure there are several schools of thought on this, what is considered standard practice for this? Are there pros and cons to glue/screw vs. just screw?
As always, thanks.
SJ
Replies
The recommendation from the manufacturer is to thinset glue the backer board to the sub floor. Either screw or use roofing nails to nail it.
I use the roofing nails because the heads sit flat. The thinset is doing the holding. The nails hold until the thinset cures.
If you must have the backer board free (unglued) then absolutely screw the board down as the nails will pull.
When you put tile down, you're playing for keeps. Thinset is best, but the cement board can be put down with subfloor adhesive also. I nail with roofing gun too. Screws are too slow.
If you don't glue or mud it, then the tile guy is right-the tile will need to be replaced someday.
Thanks guys.
I figured as much......however since I don't do floors myself I didn't know what to tell this guy.
Thanks again.
SJ
Know a little about alot and alot about little.