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Waterproof Seam Tape™ Pro White crawl space tape, crawl space encapsulation® tape, waterproof tape, crawl space liner tape

Waterproof Seam Tape™ Pro (WST-PRO)

4.91 stars, based on 131 reviews
This tape is used to seal the seams of the crawl space vapor barrier. It comes in  4" x 187' rolls (compare to rolls at only 108') and is white to match all of the vapor barriers we offer. This product, when installed correctly, will give...
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Reviews 6-10 of 131
Georgia

4 inch tape for crawl space vapor barrier

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Received promptly, good quality, works as advertised.

Lafayette, IN

4" waterproof seam tape

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Pros:
  • Tough
  • sticky
  • attractive
Cons:
  • none
Oh boy, is this tape great! I love the way it sticks to the vapor barrier and how you can correct some minor wrinkles. Go slow and iron out the tape with your hand. It also blends in with the SilverBack vapor barrier I used. This tape is a little hard to unwrap, but worth the effort.

A little stiff for taping seams on corners and doesn't come off roll

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Pros:
  • Color matches
  • Wide
Cons:
  • Inconsistent quality
  • Stiff
Tape has a hard time turning corners as it's rather stiff, but in straight lines it looks superb. Had one roll which was leaving adhesive on the top face, effectively making the roll useless. I plan to send this roll back for a refund, but have used several others without issue.

MN

Amazing!

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Much like a quality barrier material sold by this site, this tape is quality and you need it do a good job. It is sticky as hell and sticks to anything.

Best I've seen

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Very strong and sticky. This 3" wide tape is much better than the 2" tape a national contractor used when installing vapor barrier on the floor of my crawl space. I will use some of it to better seal what they did. Highly recommended product!

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Reviews 6-10 of 131