Vapor Retarder (Floor)

Related terms

• Crawl Space

  A shallow accessible void below the floor (instead of a basement or slab) housing structure, plumbing, and ducts. Its condition affects a…

• Grade (Wood Flooring)

  NWFA appearance classifications (Clear, Select, #1/#2 Common) based on color variation, knots, and character — a look-and-cost choice, no…

• Laminate Flooring

  A photographic decor layer over a fiberboard core with a wear overlay. Economical and scratch-resistant but damaged by standing water and…

• Slab

  A poured concrete floor or foundation surface. Moving plumbing in a slab-on-grade home means saw-cutting and patching concrete — a signif…

• Vinyl Composition Tile (VCT)

  Economical, durable composite tiles common in commercial and utility spaces; requires periodic stripping and waxing.

• Underlayment

  A thin layer between subfloor and finish floor for smoothing, sound, moisture, or cushioning. The required type depends on the finished f…

• Wear Layer (Wood)

  On engineered wood, the thickness of real wood above the core that determines how many times the floor can be sanded and refinished.

• Uncoupling Membrane

  A layer (e.g., Ditra-type) between subfloor and tile that absorbs substrate movement so tile and grout don't crack — standard over wood s…