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.
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 penetration and sealing of pores of concrete
Elasticity to absorb substrate movements
Resistant to standing water
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