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Old 11-16-2013, 09:42 PM   #1
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laminate over slab - cold....!!!!


Last year, I installed laminate flooring (10mm) in my family room which is over a slab. I only installed a 6 mil vapor barrier,and the laminate that had the foam pad already attached onto it. But of course now the floor is kind of cold (really cold) when winter is coming

I did install laminate upstairs (on OSB) and I used 6mm cork as underlayment to reduce noise

I was wondering if a layer of cork (6mm or even 12mm) could be used as underlayment over a slab to reduce the cold floor and bring some kind of insulation?
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Old 11-17-2013, 06:09 AM   #2
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It would be better then nothing.
What I did was install 3/4" blue foam insulation then the flooring.
It worked perfect.
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Old 11-17-2013, 07:39 AM   #3
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You put the laminate directly over the blue foam?
I would have thought a subfloor was required over the blue foam before installing the laminate. Is your floor not "spongy"?
How did you attach the blue foam to the floor? Just floating?
And did you use a 6 mil vapor barrier fisrt?
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Old 11-17-2013, 07:52 AM   #4
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I did it two different ways due to different floor heights.
One it was vapor barrier, blue foam, Advantech with construction adhesive in the T & G
and a few long Tap Cons, then the flooring.
Nothing moved in 5 years. Once the base went in we stood on the outside edge to check to see if there was any movement. There was 0 movement.
The foam is so dense and the flooring spreads out the loading.
This was in my own home I rent out and I like to try out new ideas on my own places so I do not have to deal with upset customers.
I've been back there many times and have never seen a seam open up or flexing in the flooring, and it sure is warmer in the winter.
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Old 11-17-2013, 09:18 AM   #5
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When installing the laminate, did you use a piece of plywood to walk on the foam to avoid any dent from your feet/knees?
What the difference between the blue foam and the pink one?
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Old 11-18-2013, 08:22 PM   #6
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Pink 150 is 15#, 250= 25# per square foot; http://www.google.com/url?sa=t&rct=j...,d.cGE&cad=rja

Dow (blue) also varies with product; http://dow-styrofoam.custhelp.com/ap...3892/related/1

Ok floor= 1/2" fb, warm floor= 1" XPS, IMO.

Gary
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Old 12-03-2013, 12:55 PM   #7
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Ahhh but then it'll screw up the riser height of my first step! Always something.
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