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This new MasterSeal™ caulk is used for sealing the vapor barrier to the foundation wall in the event the Foundation Seal Tape™ won't stick because of too much moisture on the foundation wall. 

Available in Grey

Price: $7.20
    Availability: In Stock
    Ships Next Day or Sooner™


    Our new MasterSeal™ caulk is designed to help hold vapor barrier in place when the conditions are too moist for our Foundation Seal Tape™ to hold up. 

    • Sold by Each Tube 
    • for pricing by case, please call 
    Overall Customer Rating of 1 Reviews:
    S.E. Michigan

    Very flexible

    Worked well to seal silverback vapor barrier to crawl space walls. I did find that the caulk was more difficult to tool than most caulks that I have used. The cure time is relatively long but this dies have the advantage of longer working time. The cured caulk is very soft and flexible. The caulking will stay where you put it. It does not slump.