MasterSeal 550 J Light Grey 20kg Cementitious

Two-component acrylic reinforced cementitious, flexible waterproof coating

  • Terms & Conditions 
  • Prices excluding  VAT.
  • Prices excluding delivery costs
  • Delivery: 2 working days, (Weekend Friday, Saturday and Sunday)

MasterSeal 550

MasterSeal 550 is an acrylic-modified, portland cement-based flexible, waterproofing membrane for concrete and masonry. Use it above or below grade on interior or exterior surfaces.


  • Waterproof membrane
  • Creates a flexible membrane
  • Breathable
  • Ready-to-use k


  • Protects against soil moisture and water seepage; extends life of structural slabs and underlayment
  • Accommodates substrate movement; prevents cracks from telegraphing; provides excellent underlayment for thin-set tile applications
  • Allows interior moisture vapor to escape
  • Easy to mix and place
  • Low odor

Recommended uses:

  • Walls and floors
  • Tiled pools and fountains
  • Plaza decks
  • Balconies
  • Mechanical rooms


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