MasterSeal 620 - A bitumen / rubber latex emulsion. Surface applied, flexible, damp and vapour-proof liquid membrane

Formerly Masterseal 420


MasterSeal 620 is a brown rubber/bitumen liquid emulsion with excellent adhesion which dries to a tough black seamless, flexible dampproof and vapour-proof membrane.

Where is MasterSeal 620 applied?

  • Damp-proofing structures: to provide an impervious damp-proof membrane on concrete and brick. 
  • Floors: to provide a sandwich membrane in new construction or a surface treatment. 
  • Walls: for interior and exterior walls. 
  • Roofs: for the maintenance of many types of roofs including built-up felt, asphalt, lead, zinc, aluminium, concrete, lightweight screeds, timber, slate, asbestos cement, corrugated iron, and as a vapour barrier.
  • As an adhesive: for bonding wood blocks and wood mosaics, insulation board, expanded polystyrene and cork tiles and to provide a key for plastering.

Product Information

Technical Data Sheet

Info & price request

Midrand: +27112032405 Westonaria: +27117541343
Coastal Regions: +27112032405


MasterSeal 620 TDS

pdf (70,91 Kb)
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