HELP! Underlay on Cement Slab?

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Old 08-06-03, 10:15 AM
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HELP! Underlay on Cement Slab?

Doing a bathroom remodel and have taken out the old flooring down to the slab (50 years of layers of tile!). We want to install new vinyl floor. Question is... how do we attach plywood underlayment to slab? (All those nifty fix-it books don't account for slab construction!) We assume some type of glue... recommendations? Other things to think about? THANKS!
 
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Old 08-06-03, 06:36 PM
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This is what to use over a rough concrete floor.

If it's smooth you're good to go with the install. You need no plywood on concrete for vinyl.
 
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Old 08-07-03, 01:55 PM
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Thanks but...

Thanks so much, Daniel! Appreciate the link and this stuff looks great to apply to the cement floor. However...

Our toilet flange is raised off the slab about 1/2" so we plan to lay down a plywood underlayment anyway to bring the floor to that level. So ... what do we use to glue down/attach the plywood to the slab?
 
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Old 08-07-03, 03:12 PM
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Concrete, plywood and vinyl are a real bad combo. It is an installation waiting to fail. Search at the link I posted for a self leveling compound. That should siut your need.
 
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Old 08-07-03, 05:12 PM
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Talking THANKS!

Thanks! Found the right product on the Ardex site... Do you know where you can buy it?

REALLY appreciate your help, thanks!
 
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Old 08-08-03, 08:05 PM
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Any flooring supply house wil;l have it. You could try the big box stores too.
 
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Old 08-10-03, 12:55 PM
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Putting plywood on concrete is a real bad idea. If you get any kind of leak you will blow the floor out since there is no place for the moisture to go.
 
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