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 ?
Innovations from Benjamin Obdyke, such as the first roofing ridge vent on a roll, the first wood roofing underlayment, and the first rolled product to provide drainage and air flow in rainscreen wall assemblies, have helped shape today's building practices.
Not only does it offer unlimited moisture vapor protection, it provides sound abatement properties equivalent to 1/4" cork underlayment.
1-2009 (American National Standards Institute 2009) standard except for thickness swell for the floor underlayment applications (particleboards for the floor underlayment [PBU] grade).
Finally, Stopgap 300 HD smoothing underlayment was pump-applied across the subfloor at a thickness of 6mm to create a smooth, even and durable base for the final floor finish.
We see a new era of opportunity to provide greater value to our customers by expanding our cornerstone products: Aptra UV8 film and RoofTopGuard II underlayment.
Vistamaxx propylene-based elastomers are being used to enhance the performance of a range of products for construction applications, including roofing underlayment, roofing sheet and sound deadening.
United States Gypsum Company has been granted a patent for a mixture for use with water as a coating between an adhesive and a floor underlayment made with calcined gypsum.
The result is an impressively 'user friendly' instructional compendium on roof sheathing, underlayment, asphalt shinglers, wood shingles and shakes, mineral-surfaced roll roofing, tile and slate roofing, metal roofing and siding, as well as built-up and elastomeric roofing.
End uses for the material are equally varied, covering everything from fuel chips to crumb rubber for use in asphalt production, as underlayment for football fields, for molded products, in horse arenas, as playground material, for running tracks, as tiles for weight room floors and more.
The Brock Performance Turf Underlayment, a stoneless impact and drainage layer, specifically for use under synthetic turf, takes just two days to install.
Earlier this year, Columbia Forest Products became the new operator of the former Weyerhaeuser multiple hardwood plywood underlayment operation.
Included in the line are four types of padding: a better and best rug gripper, a felt underlayment and a pad specifically designed for rugs layered over carpet.