Cap Sealer

Cap Sealer

Alkaline resistant sealer for fresh ridge capping mortar repairs and as a surface filler for weathered cement tiles.

Cap Sealer is a low VOC water-based, 100% acrylic sealer, binder and high build elastic base coat membrane with excellent substrate fill and resistance to alkali burn from new cement mortar repairs. The product is used as a specialty sealer by the roof restoration industry for application to fresh green ridge capping mortar repairs that are carried out during the restoration process of a cement tiled roof.


  • Strong sealing and binding.
  • Highly tolerant to new green mortar.
  • Strong inter coat adhesion.
  • High build elastic surface filler.
  • High tack dry surface.
  • 1 hour recoat.


  • Binds micro contaminants.
  • No alkali burn or leaching salts 
  • Permanent bond to topcoats.
  • Smooths out weathered tiles.
  • Safe for roofing applicators.
  • Easy water clean up .

Why Choose Wallmaster

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Australian Made and Owned

Wallmaster Paints are a leading Australian paint brand that remains 100% Aussie Owned and Operated. We are proud of what we make and that our products can carry the Australian Made and Owned Logo.

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CodeMark Certification

Independent third party accreditation for heat reflective coatings provides our clients' assurance that the Energy Star products they use will perform as stated.

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Environmental Certification

The Good Environmental Choice Label is the only environmental labeling program in Australia which indicates the environmental performance of a product from a whole of product life perspective for consumer goods.