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Forums Home > Installation by Floor Ty... > Tile > installing cementboard
installing cementboard
Author Message
Odell
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Joined: August 2008
Posts: 7
Location:
Posted: August 19, 2008 2:03 AM

I am installing a 1/2 inch cementboard on my upstairs floor prior to tiling. Do I need to glue it down first or can I just screw it down
MichaelPrachniak
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Joined: July 2008
Posts: 386
Location:
Orlando, FL
Posted: August 19, 2008 12:08 PM

RE: installing cementboard
Hello. The short answer is NO!

Here is the long answer: You need to stabilize the cement board with thinset. That will both strengthen the floor and eliminate movement between your cement board and subfloor. Do not use a mastic or glue, use thinset for strength. First, dry lay all of the pieces down, cutting in the perimeter. Then mark around each piece with a marker. Then working section at a time, apply thinset directly to the subfloor and lay the board down. Make sure you screw down each board shortly after you apply the thinset while it is fresh so the board can sink down into the mud. Make sure you screw the edges down every two inches and the middle every four inches.
Michael Prachniak - Expert Tile and Stone Consultant and Writer, Owner - TileProductions.com
 
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