MasterSeal 541 - An acrylic reinforced, cementitious, flexible waterproof coating


MasterSeal 541 is a two-component, acrylic modified, cementitious coating that requires only on-site mixing to form the ideal product to waterproof and re-surface concrete, masonry, and most other construction materials.

Where is MasterSeal 541 applied?

  • To reface and even out variations in concrete surfaces
  • As a waterproof lining for water retaining structures like water tanks, pools and reservoirs. 
  • For coating seawater channels
  • Sealing and coating tie bar holes to ensure water tightness 
  • For waterproofing and protection against brackish water 
  • To provide foundation protection 
  • As a backing to marble and granite to prevent water ingress, and thus alleviate surface staining
  • To provide protection to concrete surfaces from carbonation and chloride attack
  • For use on pedestrian walkways in marine areas

What are the advantages of MasterSeal 541?

  • Excellent adhesion – bonds to porous and non-porous surfaces  Slight flexibility
  • Suitable for light pedestrian traffic
  • Breathable – whilst repelling water, allows substrate to breathe
  • Slurry or trowellable consistency; application is still possible by spray. 
  • Unlike conventional coatings, which require a 7-28 day cure of concrete, MasterSeal 541 can be applied to 24 hour-old concrete, thereby giving immediate protection 

Product Information

Technical Data Sheet


MasterSeal 541 TDS

pdf (206,61 Kb)

MasterSeal 541 grey (Part A) MSDS

pdf (230,17 Kb)

Info & price request

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Hotline Phone: 15560​