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-   -   Leveling a concrete slab for laminate (http://www.diychatroom.com/f5/leveling-concrete-slab-laminate-142535/)

yamahamer342 05-03-2012 10:45 AM

Leveling a concrete slab for laminate
 
First of all the basement is dry, I have had a 4x4 piece of 6 mill tapped down there for 2 weeks and it is bone dry. Now, the slab is unflat as well as unlevel. Its highest spot is in the middle then it slopes about 3/4" over 10 ft left and right. It also has some valleys and ridges. What i was planning on doing, is laying down 3/4" rigid foam, taping seams, and then laying some 3/4 ply, and tapcon it all down. I have read of people using this method to level the floor. My question is do you think it would take enough of the unflatness out to lay laminate? I really wanted to avoid doing the self leveling underlayment. It will double my cost.

joecaption 05-03-2012 11:07 AM

Anything flat you lay down will just follow the level of the floor.
Laminite or any type flooring could care less if the floor is not level, it's the flatness that matters.

yamahamer342 05-03-2012 12:48 PM

I understand it wouldnt correct any leveling issues, but the flatness? There are small ridges and valleys in the slab. I figured laying the foam and 3/4 ply would take most of that out. If not, I will just go ahead with the self leveling underlayment.


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