vapor barrier overlap


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Old 09-13-06, 10:38 AM
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Question vapor barrier overlap

I'm installing a laminate floor in my slab-on-grade house. I've flattened everything out with Plani/Patch and now I'm at the point where I need to put down a vapor barrier.
I'm going with 6 mil polyethylene but I'm not sure how much to over-lap the sheets before taping.

Can anyone advise me?

Thank you
 
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Old 09-13-06, 10:32 PM
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If your using a good clear packing tape with a good perm rating, you don't have to go very far, an inch or two. A lot of laminate manufacturers are suggesting an 8" overlap and no tape needed!!! YIKES!

I go a couple 3 inches and tape with 3M packing tape, to seal it.
 
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Old 09-14-06, 12:54 PM
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Thumbs down 8" and no tape??!!

I'm certainly no pro but there's no way I could sleep at night if I did that.
Plus, "wasting" that much would make you have to buy another roll.

I'm sure they'd be glad to sell it to me.
 
 

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