sub floor (over slab)


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Old 08-26-08, 04:28 AM
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sub floor (over slab)

Here's the deal...I have existing engineered wood floors in part of the house and carpet in the bedrooms. I want to lay a new engineered wood floor (floating) in all of these areas. I understand that the floating floor will lay over top of the existing wood, but I will have to bring the height of the bedrooms up to match it. Which would be better...plywood or luaun? Should I glue it to the slab or ??? What about expansion joints in the sub floor? Thanks.
 
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Old 08-26-08, 09:07 AM
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Might not be the answer you are after but i just did the same thing and i put two layers of under lay on mine and it worked great and matched up almost perfect
 
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Old 08-27-08, 10:10 AM
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Originally Posted by LesFerguson
Might not be the answer you are after but i just did the same thing and i put two layers of under lay on mine and it worked great and matched up almost perfect
That sounds like a better way to go. Which underlayment did you use?
 
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Old 08-28-08, 10:15 AM
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I used the premier underlay from lowes it has the mosture barrier on one side and the wool looking stuff on the other hope it helps
 
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Old 09-01-08, 06:40 PM
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Never double the underlayment!!!! That will void any warranty the wood manufacturer places on the product. Too much flex with break the glue joint loose, or if it is a click, bust the locking tongue off, both cases the floor begins to separate.
 
 

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