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I'm looking to install laminate floors in my basement. The floor is cement. I went to HD yesterday and they sell Pergo, Shaw and Dupont. HD is having a 20% off all laminate floors until 1/19.

Dupont is the most expensive, but they have a padding attached to the back of each board which according to the Dupont call center eliminates the need for addtional padding. A vapor barrier is still needed.

Has anyone used or heard anything about Dupont laminate floors?

I've read on this forum that I should apply 2 coats of concrete sealer after I have totally cleaned the concrete.

Should I place additional padding anyway?
Any other tips?

Anyone know of an installer on Long Island, NY?
 

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I prefer on-attached cusions with laminates. I'm not positive about Dupont's but usually you get an inferior pad when it's included. I prefer a heavier padding. Cork and rubberized make good underlayment materials for floating floors. Quieter and longer-lasting.

Don
 

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I have installed some DuPont but not much, given the name I would expect a good product.
I'm the one that expounds on sealing the concrete. I live in So. FL where you can't dig a hole 3 ft. deep without hitting water. Most of the state is only a few feet above sealevel and we get over 50 ins. of rain a year. Last Sept. we got 40+ ins. in a month. This is why I advocate sealing slabs here. Your situation may be different.
As to underlay/vapor barrior, I like Armstrong's 2 in 1 when used flooring with the underlay attached. The 1/4" stuff is a bit much.
 

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Do not add an additional padding, that is the reason I do not like the attached pad. You cannot upgrade pad.
Use a 6 mil poly first for moisture.

Dupont has better grade than the one you bought at home depot, but, the quality is still good.
 

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I installed one of these recently and was told additional underlayment was not needed. I suppose you could add it though.
 
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