Imus Seal Butyl Joist Tape for Flashing Deck Joists and Beams (1-5/8” x 50’ Non-Skid)

(1217 Reviews)

Price
$15.99

Size
Quantity
(40000 available )

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100 Ratings
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Reviews
  • Marlin Blanton

    > 3 day

    So far so good, cheaper price than other comparable flashing tapes. Will buy more

  • M.L.

    > 3 day

    Works great, sticks well to deck joists, easy to apply, good price! Highly recommend.

  • owen kaminsky

    > 3 day

    love the tape works GREAT sticks good.

  • Juan

    > 3 day

    Great value Way cheaper than home depot

  • Robert Franks

    > 3 day

    I used Imus Seal butyl tape for a boat dock build. Feels pretty heavy duty. Worked good for my application. I used the tape to cover the deck joists and frames. I also used it for the abutment areas where the framing comes together. Some areas got additional attention with some polyseal compound from my putty gun. With pressure treated lumber the weak places are the wood/wood interfaces, and fastener areas. The Imus tape was easy to apply and ideal for this application. I expect this tape to add years to the life of my dock. Good investment!

  • JB McDonald

    11-06-2025

    super sticky and seems to do the job very well. Guess I wont know for years if its properly protecting my deck joists, but it looks promising. I know when I back out some screws they were covered in the sealing material, so that seems good.

  • JL

    > 3 day

    Worked as expected. Slightly difficult to remove the backing from the adhesive side but nothing that would prevent me from buying again.

  • J. Hoffman

    > 3 day

    Adhesive is very good on dry wood. Don’t expect it to stick to pressure treated lumber that is still wet.

  • Chris S.

    > 3 day

    Product was as described. I bought the item 2 more times.

  • King George

    > 3 day

    Well, this joist tape is sticky. It is black and it is thick. Easy to peal and apply. It is super sticky so it stays where it is put, and is hard to remove once it is set. I used this to cover the top edge of the 30 year old beams and joists when I replaced the decking boards on my deck. Will it work? Will it prevent rot? It seems like a good idea. I will never know. By the time that the deck boards are removed years from now I likely will not be here to find out. Others have noted that they found it hard to cut. I have some advise. Do not use a knife. Scissors work best. It took some practice but I found that I had to cut steady and slowly so as not to cause the tape to separate from the plastic backing. If you get any of the sticky goo on your scissors, you are done and need to clean the scissors before cutting again. I used a clean rag and some carb cleaner to refresh my scissors when they got gummed up.

Deck structure joist and beam rotDeck structure joist and beam rot

Want to prevent deck rot?

Protect your deck structure with Imus Seal Butyl Joist Tape.

Imus Seal Butyl Joist Tape is the premium joist tape trusted by building professionals, homeowners, and DIYers to help extend the life of deck structures.

Water on deck joist tapeWater on deck joist tape

Deck substructure framing with Imus Seal Butyl Joist TapeDeck substructure framing with Imus Seal Butyl Joist Tape

Imus Seal Butyl Joist Tape used as barrier between metal joist hangers and pressure treated woodImus Seal Butyl Joist Tape used as barrier between metal joist hangers and pressure treated wood

Deck construction with Imus Seal Butyl Joist Tape on the deck substructureDeck construction with Imus Seal Butyl Joist Tape on the deck substructure

Diverts Water from Joists and Beams

Strong and flexible black facer allows for tear resistance while being able to form to fasteners and corners.

Seals Decking Screws

Pressure-sensitive butyl waterproof membrane, containing no asphalt or VOCs, self-seals around nail and fastener penetrations.

Provides a Barrier Between Metal and Wood

Corrosive chemicals like alkaline copper quaternary (ACQ) and copper azole (CA), commonly used in pressure-treated wood, can corrode steel joist hangers and other metal hardware. Installing Imus Seal Butyl Joist Tape between metal and wood creates a barrier to prevent contact.

Protects Treated and Non-Treated Lumber

Compatible with deck materials including pressure-treated wood and composite products.

Imus Seal Butyl Joist Tape installation on deck structureImus Seal Butyl Joist Tape installation on deck structure

Specifications

  • Thickness: 0.02 in.
  • Composition: 12 mil butyl adhesive coated to a non-slip black facer with a tear resistant release liner
  • Installation Temperature: 20° F to 150° F

Made in the U.S.A.

Installation

Apply Imus Seal Butyl Joist Tape to a clean, dry surface in three simple steps:

  1. Peel
  2. Stick
  3. Cut to length

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