MasterSeal 501 - A surface applied capillary waterproofing system for concrete and block work 

How does MasterSeal 501 work?

The MasterSeal 501 waterproofing system ensures a total and permanent solution to water leakage, ingress, or seepage in concrete structures or any cementitious substrate. The formation and development of insoluble crystals into water bearing capillaries and interstices effectively blocks the further passage of water.

What is MasterSeal 501 used for?

MasterSeal 501 can be used for water tanks, water towers, reservoirs, dams, canals, harbours, concrete pipes… In summary, to help the retention of water in storage, treatment and transportation units.

MasterSeal 501 can also be used as a waterproofing element in basements, tunnels, inspection pits, foundations, retaining walls, lift shafts, construction joints, sea defence walls, bridge decks, jetties and pontoons.

What are the benefits of MasterSeal 501?

MasterSeal 501 is a versatile product offering many advantages to the user:

  • Provides total and permanent waterproofing properties by becoming an integral part of the structure to which it is applied. Active ingredients will not delaminate, peel off or wear away.
  • Protects concrete and reinforcement against corrosive waterborne substances.
  • Crystalline action is reactivated by contact with water providing permanent and continuous protection.
  • Effective against both positive and negative water pressure.


Product information

Technical Data Sheet

Specification Clause

Regional contacts

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