9801, Parkway, Anjou, Québec Canada H1J 1P3
1 866.51.PROMA (77662)


PRO MBR is a high-performance integral membrane used for waterproofing under tile and stone installation.


  • Use for waterproofing underneath tile or stone in interior institutional, commercial and residential floor, wall and ceiling installations
  • Use in wet areas, such as tub and shower surrounds, kitchen and food prep areas as well as laundry rooms
  • Suitable for submerged applications, such as pools, spas, hot tubs, fountains and water features (interior application only)
  • Use in steam rooms, when used in conjunction with a vapor barrier (refer to TCA handbooks section SR613 and SR614)
  • Isolates shrinkage cracks, in plane, up to 3 mm (1/8″) wide; or cracks greater than 3 mm (1/8″), use PROMA fiber mesh or reinforcing fabric
  • Compatible with all polymer-modified thin-set mortars
  • Premixed ready to use, and applies easily with a trowel, roller or a brush
  • Rapid-drying formula allows for faster installation of tile and stone
  • Bonds to properly prepared stainless steel, metal and ABS drain assemblies
  • Will not promote mold, mildew or bacteria growth
  • No VOC
  • Low odor, non-flammable
  • Meets or exceeds ANSI A118.10 requirements for thin load-bearing waterproofing
  • Meets or exceeds ANSI A118.12 high-performance standards for crack isolation when used with PROMA fiber mesh or reinforcing fabric
  • Contributes to LEED® objectives and requirements


4 L (1.05 US gal) pail
20 L (5.3 US gal) pail


Data Sheet



Use this convenient calculator to determine how much product you will need for a project.