Fortifiber Aquabar "B" Underlayment, 36" x 167' Roll (500 SF)

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Aquabar "B" is a hardwood and tile underlayment that works as an effective moisture vapor retarder in a wide variety of interior applications. Ideal for use beneath wood flooring and behind or below tile and stone substrates.


Aquabar "B" is a hardwood floor and tile underlayment that protects against moisture vapor related problems. It helps to eliminate bucking, cupping or cracking below wood flooring and also minimizes dust and noise. Also used as a membrane on walls, counter tops or residential showers.

Consisting of two layers or kraft paper laminated with asphalt, Aquabar "B" is a non-reinforced 30/30/30 duplex type Grade "B" paper.

  • High moisture resistance
  • Low vapor permeance
  • 30/30/30 construction
  • Clean & easy installation
  • Size: 36" x 167 LF (500 sq. ft.)

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