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The Cement Board

Posted by Dodgeman on February 14th, 2001 01:32 PM
In reply to Kitchen Tile Underlayment. What material? by Dave on February 14th, 2001 10:48 AM [Go to top of thread]

Provides a good bonding surface for the thinset and tile. BUT cement board does not provide much to the floor in the way of rigidity. Take a straightedge, measure how much the floor deflects over the 16 inch centers with a 200 lb load. If it deflects more than .040 inches, you need to reinforce from underneath or add additional subflooring.

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