The plastic side faces up and the fiber faces down. Two benefits are provided:

Moisture Protection

Quiet Walk Underlayment Moisture Protection

The fibers can actually allow the vapors to evaporate through the gutter system of the underlayment. The fibers are treated with a safe anti-microbial to inhibit mold and mildew.

Protection from Leaks

QuietWalk Underlayment Protects from Leaks

Spills, leaky plumbing, faulty ice-makers can cause floor damage. QuietWalk underlayment fibers can absorb up to 5 times it’s own weight, drawing harmful moisture in while protecting the overlying floor.

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You are about to install your new flooring. As you lay the first plank you realize that

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  • On grade concrete is tricky. The proper thing to do is to test what the concrete is emitting for moisture vapors.

    Find the suitable floor underlayment that will perform to those emissions. Foam underlayment is made from resin/petroleum based products which will block moisture inherently.

    Fiber/Felt Underlayment is made from recycled materials and will help the concrete breathe those vapors instead of just blocking them helping to inhibit mold and mildew situations. It manages moisture and will not allow moisture to pool under the blocker like foam. Pull back a welcome mat once on the stoop, moisture is there as the mat was blocking the emissions and allowing them to accumulate into water.

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    You are about to install your new flooring. As you lay the first plank you realize that

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    Category Posted In: Floor UnderlaymentTagged: 2 Comments on For an ongrade concrete sub floor under laminate floor, is foam or felt/fiber underlayment better?
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