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Use this tape to create a seal between the crawl space vapor barrier and the foundation wall. This black tape is reinforced and is 1.5" wide x 108' long

Price: $25.96
In stock
Availability: In Stock
Ships Next Day or Sooner™
FST-100

Quantity:
Item #: FST-100
Availability: In Stock
Ships Next Day or Sooner™

Quantity

32+

 Price Each 

$21.00

Foundation Seal Tape™ (FST) is used to seal the vapor barrier to the foundation wall. When installed to a completely dry & clean foundation wall, the bond is good enough to hold the vapor barrier to the wall temporarily (several hours/days) until the Foundation Pins are installed. If the foundation wall is wet in the area it will be installed and it will not bond then a polyurethane caulk must be used. This tape is 1.5" x 108' and has a reinforcement inside the tape to eliminate stretching like bubble gum. This is important because without the reinforcement this tape is impossible to apply in a crawl space. Most all other tapes on the market, similar to this one, do not have the reinforcement.

IMPORTANT-
Using a wire brush will create dust and debris that fills the pores of the block. When this happens the FST loses most of its grip to the block due to adhering to the dust in the pores rather than the block itself. No matter how much soft brushing you do AFTER the wire brush the FST will likely not stick.
**During cold month installations this product must be stored indoors prior to use. This product is not meant for installations that have WET or very DAMP foundation walls please use the polyurethane caulk.



**We always recommend getting a few tubes of Poly Caulk to make sure you have enough material to get a good seal to the foundation and to handle any damp areas on the foundation walls. Remember when you figure your FST to include going under beam pockets, ductwork that is touching the foundation walls and the access door.
6 rolls to a case.
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Foundation Seal Tape

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Worked well and with temps in the 60s, was not too sticky, but bonded well to dry and coated concrete once it was prepped.
Tape would not stick to one wall in this job, as it was wet on the surface and saturated with moisture - however - nothing we tried would stick so its not the fault of the tape. Was able to make it work with a combination of silicone adhesive on the tape to create the seal and a foundation pin every 6". A little overkill, but it worked perfectly. Luckily, this wall was only 5'.
Good stuff - recommended

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the tape sticks to concrete with no problems

Butyl tape

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Sticks well to vapor barrier, concrete block and brick. You should have a roller to firmly press it down into the wall and also to press the vapor barrier onto it. I used the type of roller that is used to install sound deadening material in automobiles. It has a heavy metal wheel with ridges. (Amazon – $10.) I found it easier to drill the holes first, mark the spot where you drilled just above, then put down the tape and the vapor barrier. You can feel where the hole is and punch through with a pencil, then put in the Christmas tree. Which ever way you do it, you must brush the wall before applying the tape. Do not skip this step! Get that dust and cobwebs off there, give the tape a chance to stick. Peel the paper back a little at a time. Apply the vapor barrier carefully, don’t even think about peeling it off and re-positioning it.

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good

Foundation seal tape

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Pros:
  • Easy to work with
Cons:
  • By itself won’t hold liner to walls
Are use this tape to stick to the foam board and then attach the guardian liner to I then left it that way for a day came back the next day and a lot of the walls had fallen off! the tape and either pulled off the guardian liner or the foam. I had to go back and re-install and use the Christmas tree fasteners to hold the liner until I finally taped the top edge! It made it easy to install walls just don’t relay on it to hold liner with out a mechanical fasteners!