MasterSeal P 640 - Single component polyurethane primer for absorbent substrates prior to application of MasterSeal M 635
How does MasterSeal P 640 work ?
MasterSeal P 640 is a single component, polyurethane based, solvent containing primer for absorbent surfaces.
Recommended Uses
Primer for polyurethane waterproofing membranes like certified MasterSeal M 635.
Can be applied on concrete, cement mortar, wood, etc.
What are the features & benefits 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.
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