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    ​​​​MasterSeal 501/502 - A surface applied capillary waterproofing system for concrete and block work


    How does MasterSe​​al 501/502 work?

    The MasterSeal 501/502 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 bearin​​g capillaries and interstices effectively blocks the further passage of water.

    Where is MasterSea​​l 501/502 used?

    MasterSeal 501/502 can be used to help the retention of water in storage, treatment, and transportation units. Applications include: 

    • ​Water tanks and reservoirs
    • Building basements and foundations
    • Swimming pools and water parks
    • Sewage and water treatment plants
    • Dams, canals, tunnels and harbours
    • Retaining walls and sea defence walls
    • Concrete pipes 

    What are the benefits of ​​MasterSeal 501/502?

    MasterSeal 501/502 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

    ​Explore other cementitious waterproofing solutions 

    ​​MasterSeal 540 - ​Flexible, polymer cement waterproofing slurry​

    MasterSeal 555 - Two-component, flexible, polymer cement waterproofing slurry with excellent weathering resistance and crack bridging capability

    MasterSeal 583 - Waterproof cement-based coating for concrete​​

    MasterSeal 590​ - One-component, cement-based, fast-setting water-stop repair mortar​​​​


    MasterSeal 501/502 Technical Data Sheet

    pdf (142.51 Kb)


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