Butyl Tape

Long-Lasting Butyl Deck Joist Tape for Joist Decking

Did you ever pull up old deck boards and find rot right where the screws went in? Butyl deck joist tape stops that by sealing the wood before you lay a single plank.

  • Order(MOQ) :

    500 ROLLS
  • Payment :

    T/T, PAYPAL
  • Product Origin :

    CHINA
  • Color :

    GREY, BLACK, WHITE
  • Shipping Port :

    WUHAN, SHANGHAI
  • Lead Time :

    15-20 WORKING DAYS
  • Product Details

Long-Lasting Butyl Deck Joist Tape for Joist Decking

Butyl deck joist tape is single sided adhesive tape, so you just peel the liner and stick it down. No folding, no double layering. The joist tape for decking itself has three layers: a clear PE film on top , a thick butyl rubber adhesive in the middle, and a white release paper underneath that you pull off. That butyl does the real work – it squishes into little cracks and seals tight around every fastener. The clear film takes sun and rain without getting brittle. It's made for deck joists, but also for beam tops or any horizontal lumber that needs a waterproof barrier.

butyl joist tape operation

Butyl deck joist tape goes on top of joists before you lay decking. It seals nail holes and tiny cracks. Water can't get into the wood. That stops rot, mold, and rust on fasteners. Your deck stays solid for years. Simple stuff, works great.

TECHNICAL SPECIFICATIONS

Property

What it is

Backing

Clear PE film

Adhesive type

Butyl rubber (single sided)

Release liner

White silicone paper

Total thickness

About 1mm (plus or minus a hair)

Widths we stock

2", 3", 4", 6" (50/75/100/150mm) or custom

Length per roll

66ft, 100ft, 165ft (20/30/50m) or custom

Temp range

Stays flexible from -40℃ up to 90℃

Waterproof

Excellent

 

Key Advantages

  • It sticks even when the wood's a little damp. Wipe off puddles and go.
  • No primer, no heat gun, no special tools. Peel, stick, press.
  • The clear top lets you see where your joist edges are – helpful when you're lining up boards later.
  • Doesn't ooze out in hot weather. Some tapes get goopy; this one just sits there.
  • Holds up if you walk on it before decking. Won't tear or shift.
  • Works with any deck screw – galvanized, stainless, doesn't matter. Tape seals around the threads.

PRODUCT PACKING & SHIPPING

Each roll comes with a 3" core. We pack them flat in cardboard boxes. For a typical 3" width, you get 6 rolls per box. Heavier rolls go in smaller counts.  Also could use pallet loading if customer request

Production time need around 20days after deposit for mass order. 

Sea shipment by COSCO, RCL, ONE, EVERGREEN, HPL ,etc or customer appointed

HOW TO USE

01 Clean the surface: Clean the joist top. Broom is fine – get the big dirt off.
02 Unroll: Unroll a piece of butyl deck joist tape a bit longer than the joist width.

 

03 Peel: Peel back the white paper from one end, stick it down, and work your way across.

 

04 Press:  Use your thumb or a little hand roller. No bubbles? Good. Trim the end with a utility knife. That's it.

APPLICATION

  • Deck joists (pressure treated or cedar)
  • Ledger boards against the house
  • Beam tops where water sits
  • Repair work – covering cleaned up rot before sistering a new piece
  • Pergola rafters, dock stringers, even fence rails that get wet
  • Any horizontal wood that sees rain and can't dry fast enoughbutyl deck tape application

FAQ

Do I need to let the wood dry out completely?
Nope. That's the nice thing about butyl. If it's not dripping wet, just slap the tape on.

Will it leave sticky residue if I peel it up later?
Yeah, a bit. But you're not supposed to peel it up. It's a permanent seal. If you really need to, use a scraper and some mineral spirits.

Can I use butyl deck joist tape on metal beams?
Sure. Sticks fine to clean steel or aluminum. Wipe off any oil first.

How long will it last under a deck?
Longer than the deck boards. Figure 15–20 years easy. The UV won't hit it much once the planks are down.

What if I get a roll that sat in a hot warehouse?
The release liner might stick a little harder. Cool it down in the shade or a basement for an hour – peels right off

butyl joist tape effect

WHY CHOOSE US

We’ve been making butyl deck joist tape for over 20 years, mostly for builders and roofers who hate callbacks. No fancy jargon – just materials that do the job. Our butyl putty joist tape is batch tested for low temperature peel and waterproofing. We don’t hide behind long lead times or minimum orders. You get real specs, clear answers, and a straightforward return policy. Try a sample roll, and if it doesn’t stick as we say, we’ll refund you – no questions asked.

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