Products : Surface Prep : Waterproofing Membranes & Underlayments : Peel & Stick Primer

Peel & Stick Primer

Peel & Stick Primer is used for the application of peel and stick mat underlayments like Crack Buster® Pro and EasyMat®. It seals porous surfaces and improves the bond of underlayments.

  • Features & Benefits
  • Technical Documents
  • Warranty Information

Key Features

  • Specifically formulated for improved adhesion of peel and stick membranes such as Crack Buster Pro and EasyMat
  • Adheres directly to interior concrete, plywood and OSB
  • Easy to apply - just roll on

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


Do not apply to frozen surfaces or when temperatures drop below 50°F (10°C).


1 Gallon (3.78 L) Bottles

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.

Related Products


EasyMat® Tile & Stone Underlayment

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Crack Buster® Pro Crack Prevention Mat Underlayment

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