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    MasterSeal P 640 - Single component polyurethane primer for MasterSeal M 635 and MasterSeal M 640

    How does MasterS​​eal P 640 work ?

    MasterSeal P 640 is a single component, polyurethane based, solvent containing primer for absorbent surfaces in applications where MasterSeal M 640 is used.

    W​hat are the recommended uses of MasterSeal P 640?

    • Primer for polyurethane waterproofing membranes like certified MasterSeal M 635.
    • Can be applied on concrete, cement mortar, wood, etc.

    ​What are the features and be​​nefits of MasterSeal P 640?

    • Single component product that allows simple application without the need of mixture.
    • Excellent adhesion
    • Excellent penetration and sealing of pores of concrete
    • Fast Curing
    • Elasticity to absorb substrate movements
    • Resistant to standing water
    • Frost resistant

    Download the MasterSeal P 640 Technical Data Sheet​

    Explore other liquid applied waterproofing membranes solutions

    MasterSeal HLM 5000R - Liquid cold-applied waterproofing membrane system​

    MasterSeal Roof 3000 - Liquid applied ​crack bridging waterproofing membrane for exposed situations

    MasterSeal Roof 3500 - Crack bridging, spray applied waterproofing system for roofs​


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