​​MasterSeal 621 - A high build bitumen / rubber latex emulsion. Surface applied, flexible, damp and vapourproof liquid membrane

Formerly Masterseal 420 HB

Description

MasterSeal 621 is a brown rubber/bitumen liquid emulsion with excellent adhesion which dries to a tough black seamless, flexible damp-proof and vapour-proof membrane.​

Where is ​MasterSeal 621 applied?

  • Tanking and 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

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