Products : Surface Prep : Waterproofing Membranes & Underlayments : EasyMat® Tile & Stone Underlayment

EasyMat® Tile & Stone Underlayment

Easymat-Stone-Tile-Underlayment EasyMat Install

A versatile mat underlayment for setting tile and stone over any acceptable subfloor. EasyMat® is so fast and easy to install because it is up to 25 times lighter than 1/4" (6 mm) backerboard, cuts easily with a utility knife, doesn't require any nails or screws, and comes in a peel & stick version. The mat was specially designed so that the mortar locks in, creating a bonded crack-prevention system for subfloor movement up to 1/4" (6 mm). This bonded system will withstand repeated stress and still maintain its tenacious bond. It is a superior alternative to cork underlayments because it will not rot, shrink, or absorb water. EasyMat® has SoundGard® Technology and therefore offers high and credible impact sound reduction. Use EasyMat® with other Custom® materials to qualify for a lifetime warranty.

  • Features & Benefits
  • Technical Documents
  • Warranty Information
  • Resources

Key Features

  • Set tile and stone over any acceptable subfloor
  • Highest level of impact and sound reduction
  • Specially designed so the mortar locks in and forms a bonded crack prevention system
  • No mechanical fasteners required
  • Up to 9 times lighter than other sound reduction mats
  • Will not shrink, rot or absorb water
  • Use as thermal break under floor heating systems

Suitable Tile Types

EasyMat® can be used with the following tile types:

  • Ceramic tile, all types including impervious porcelain
  • Natural stone tile
  • Precast cement terrazzo tile

Suitable Substrates

  • Concrete, cement mortar, masonry
  • Cement Backerboard
  • Exterior Plywood and OSB (interior, dry areas only)
  • Exterior Decks – Contact Technical Services
  • Post-Tension Concrete – Contact Technical Services
  • Lightweight Concrete (min. 2000 psi compressive strength)
  • Gypsum-Based cement topping (min. 2000 psi compressive strength)
  • Existing ceramic tile and resilient flooring

Composition & Materials

Polypropylene foam spheres bonded together with the use of Polyurethane Adhesive in sheet format.


  • Set tile and stone over any acceptable subfloor
  • Up to four times faster to install than 1/4" (6 mm) backerboard 
  • Optional peel & stick version
  • Up to 25 times lighter than 1/4" (6 mm) backerboard
  • Cuts easily with a utility knife
  • Mortar locks in to form a bonded-crack prevention system
  • No mechanical fasteners or tape needed
  • High and reliable-impact sound reduction


  • Do not bond directly to hardwood, Luan plywood, particle board, parquet, cushion or sponge-back vinyl flooring, metal, fiberglass or plastic.
  • Do not use as a wear surface.
  • When setting glass tile, contact Custom's Technical Services for recommendations.
  • When setting dimensional stone larger than 12" x 12" (30 x 30 cm), contact Custom's Technical Services for recommendations regarding subfloor deflection requirements.
  • Not for controlling vertical or differential movement cracks.
  • Suitable for residential and light commercial applications only

Technical Data

Applicable Standards

American National Standards Institute (ANSI) ANSI A108.01, A108.17, A118.12 and A118.13 American National Standards for the Installation of Ceramic Tile ASTM International (ASTM)

  • ASTM C627 Standard Test Method for Evaluating Ceramic Floor Tile Installation Systems Using the Robinson-Type Floor Tester
  • ASTM D638 Standard Test Method for Tensile Properties of Plastics

Tile Council of North America (TCNA) TCNA Handbook for Ceramic Tile Installation, TCNA Method EJ171, F125 & F125A


Technical Data Sheet Technical Data Sheet - French Technical Data Sheet - Spanish Material Safety Data Sheet - English

Product Warranty

Custom® Building Products warrants to the original consumer purchaser that its product shall be free from defects in material and workmanship under normal and proper usage for a period of one year following the date of original purchase. CUSTOM's sole liability under this warranty shall be limited to the replacement of the product. Some states, countries or territories do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty will not extend to any product which has been modified in any way or which has not been used in accordance with CUSTOM's printed instructions. CUSTOM makes no other warranties either expressed or implied. This warranty gives you specific legal rights, and you may have other rights that vary from state to state or from one country/territory to another.  This warranty is not transferrable.

Warranty Duration

When EasyMat® Tile & Stone Underlayment is used as a part of a qualifying full installation system of CUSTOM products, the installation can qualify for up to a lifetime system warranty. CUSTOM will repair and/or replace, at its discretion, the affected area of the system. For more information, find details and limitations to this warranty at


EasyMat Brochure

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