Underlayment


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Underlayment

A layer of roofing felt, composition board, or other thin sheet material that covers the subfloor as a base for a finish floor.

underlayment

underlayment, 1
1. A material such as plywood or hardboard placed on a subfloor to provide a smooth, even surface for applying the finish.
2. The material, usually No. 15 felt, used to cover a roof deck before shingles are applied; also called underfelt.
References in periodicals archive ?
Another option is to install a vinyl underlayment. This will allow you to lay LVT over all sorts of surfaces: plywood, particleboard, OSB, ceramic tile, sheet vinyl or painted cement.
EcoStar manufacturers a spun-bounded polypropylene product called Aqua Guard that it says is a more versatile product than felt underlayment because it will not crack or dry out in extreme temperatures and is highly resistant to wind blow off.
Cut the hole for the sink after the underlayment is installed but before you install the laminate.
* New multi-use acoustic flooring underlayment - float it, nail it, or glue it
Designed to reduce the amount and weight of material needed to cover the roof, Surround SR Underlayment features five times more material in one roll than 30-pound felt.
Floor M-1 ICBO, SBCCI, BOCA, Underlayment One-and Two-Family Dwelling Code
And these floors suffer from joint-telegraphing: the appearance of discolored lines in the vinyl that outline joints in the underlayment. Joint-telegraphing can be caused by movement in the floor system, but it's usually caused by outgassing of solvents from adhesive used to fasten plywood subfloors, even after they've been covered with underlayment.
I'd forgotten to cut out the underlayment over the floor registers, and they were buried under the flooring!
With GratedeX[R], there would be no entrapped moisture with an open celled underlayment, no wood or cement based material with a fiber-reinforced underlayment that is inert to moisture and expansion contraction issues and no cement material in the flexible Hold-Tite[R] TA bonding adhesive used to bond the stone or tile.
These companies produce a wide range of products such as acoustic material, carpet backing, recycled nonwoven, geotextiles, interlinings, filters, underlayment, surgical dressings and tissues.
These same projects may require the fast-setting Underlayment No.
There are also three Builder Bulletins on stepping, shelf systems and floor underlayment. All of these publications are available at a nominal charge or are free.