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MasterSeal 550

Acrylic reinforced, cement-based, flexible waterproof coating.

MasterSeal 550

MasterSeal 550 is a two-component, acrylic modified cement-based coating that requires only on-site mixing forming the ideal product to waterproof and resurface concrete, masonry, and most other construction materials.
Simply applied by stiff brush, roller or trowel, it forms a waterproof, flexible coating.

MasterSeal 550 provides an effective barrier to waterborne salts and atmospheric gases.
Fluid applied, MasterSeal 550 provides a hardwearing, seamless, waterproof membrane for roofs and foundation protection.

20kg double pack (15kg powder + 5kg liquid).


  • To reface and even out variations in concrete surfaces
  • As a waterproof lining for water retaining structures like water tanks, pools, reservoires, etc.
  • For coating seawater channels
    Sealing and coating tie bar holes to ensure water tightness
  • For waterproofing and protection against brackish water
  • To provide foundation & retaining walls protection
  • As a waterproof coating for roofs
  • 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

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