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We are getting ready to lay our first wood laminate floor in our basement. The basement is finished and currently has old, but in very good condition, what I would guess to be Linoleum-type 12 x 12" tiles in the bedroom we plan to lay Pergo-type laminate flooring.

My question is, do I need to lay a waterproof membrane over the tile before I lay the laminate? The tile is in perfect condition, so I see no point in taking it up, but not sure if that in itself is enough of a barrier for the laminate against the concrete floor. Thanks!
 

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As long as it's flat you should be fine to lay right over it with the correct padding. Use a pad that has a built in moisture membrane with a tapes edge that you can just peel and stick together. If you laminate already has pad attached then lay a sheet of 6 mil poly sheet plastic on the floor first, taping any seams with laminate tape or tuck tape. Then you can lay the laminate with pad right over that.
 
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