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More stories about Underlayments

  • Plywood vs. OSB

    Are these two products really equivalent, as manufacturers and grading agencies claim? A wood technologist puts to rest questions about OSB’s suitability as an economical substitute for plywood.

  • Installing EPDM Rubber Roofs

    Half-lap, move over. For leak prone flat and low-slope roofs, it’s difficult to beat the cost and performance of this single-ply rubber roofing.

  • Quality Vinyl Floors

    A professional floor installer describes the best methods and materials to use for a durable resilient floor.

  • Durable Substrates for Thinset Tile

    Behind every attractive tile job is a durable substrate. A master tiler shows how proper use of backerboard and waterproof membranes ensures a lasting finish at tubs, countertops, and floors.

  • New-Technology Tools & Materials

    Our pick of new or innovative products to help you produce high-quality jobs on time and on budget.

  • Letters

    Bootleg grounds, leaky ridge vents, stiff tile subfloor

  • Q&A: Tile Over OSB and Underlayment?

    Q: It is my understanding that plywood and OSB should always be installed with space between the sheets for expansion. Apparently, always isn’t always. I am just now beginning a project on an unfinished house in New England that has had the 1-inch OSB subflooring glued and nailed to the joists...

  • Membranes for Ceramic Tile

    Tile may shed water, but a tile job is not waterproof. A master tilesetter explains how to use trowel-applied and sheet membranes to protect against leaks.

  • Practical Engineering: Stiff Subfloor Protects Tile Job

    Stiff floor for ceramic tile

  • For What It's Worth

    Thermostatic crawlspace vent, new fiberglass-mat roofing paper, fold-up hearing protectors