kitchen tile job

Old 01-16-08, 02:01 PM
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Question kitchen tile job

Want to tile the kitchen floor but have discovered particleboard under the existing vinyl. I intended to use 1/4inch hardiboard as the base but this product should be mud set, based on the manufacturer's instructions. I'm concerned about putting the mud over the particle board. Should I leave the vinyl down as a moisture barrier?

Wayne E
Old 01-16-08, 04:09 PM
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Everything needs to be ripped out including the particle board. You need a sturdy subfloor consisting of at LEAST 5/8" ext. grade plywood then your hardibacker.

You need to find out your joists sizes and spacing along with the unsupported span.

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