SKU: 84500557372

Walther Strong Deck Tape - Joist Protection Tape

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Description

Walther Strong Deck Tape - Joist Protection TapeWalther Strong Deck Tape is a self adhesive joist protection tape applied directly to decking subframes and joists to create a watertight barrier against moisture, rot and weathering. Rated for a service life of up to 50 years, it is available in 50mm and 100mm widths to suit different subframe layouts. Specifications Brand Walther Strong Material Recycled and sustainable materials, non butyl UV Stability Fully UV stable Width Options 50mm, 100mm Roll

Walther Strong Deck Tape is a self-adhesive joist protection tape applied directly to decking subframes and joists to create a watertight barrier against moisture, rot and weathering. Rated for a service life of up to 50 years, it is available in 50mm and 100mm widths to suit different subframe layouts.

Specifications

Brand Walther Strong
Material Recycled and sustainable materials, non-butyl
UV Stability Fully UV stable
Width Options 50mm, 100mm
Roll Length 20 metres
Application Surface Timber joists and decking substructure
Use Class External, above-ground decking subframe

What it is used for

  • Protecting timber joists and bearers on outdoor decking subframes from water ingress and moisture rot
  • Creating a watertight seal under composite decking boards where the fixing screws pass directly through the tape
  • Sealing the top face of treated timber deck substructures to extend service life in exposed UK climates
  • Providing a low-friction surface that allows composite or timber boards to slide easily into position during installation

Fitting and handling

Deck tape can be applied to damp timber and in sub-zero temperatures, making it practical on British building sites year-round. Simply peel and press the tape along the full length of each joist before laying boards - the tape self-seals around screw fixings as you drive them through, so no additional sealing is required at fixing points. Rolls can be overlapped without adding significant height to the subframe, and the tape is repositionable before final pressing so you can correct alignment without waste.

FAQ

Does deck tape work on treated timber joists?

Yes. Walther Strong Deck Tape adheres to treated and untreated timber, including damp timber, so it is compatible with pressure-treated C16 and C24 joists commonly used in UK decking subframes.

Which width should I choose - 50mm or 100mm?

The 50mm roll suits standard 47mm joists where you want edge-to-edge coverage with minimal overhang. The 100mm roll is better suited to wider bearers, doubled-up joists or situations where you want the tape to wrap slightly down the joist sides for added protection.

How long does deck tape last once applied?

Walther Strong Deck Tape is rated for up to 50 years of service life. It is fully UV stable, so exposure through gaps in the decking boards will not degrade the adhesive bond over time.

Nottage Timber Merchants stocks Walther Strong Deck Tape alongside a full range of decking boards and decking accessories, available for collection from our Bridgend yard or delivery across South Wales. Contact us to confirm next-day availability for your project.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 84500557372

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Lorraine
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★★★★★ 4
Smooth, Stable, and Perfect for Flexible Spaces
Size: 88''W-4 Panel, Color: Grey, Size: 88''W-4 Panel, Color: Grey
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Reviewed in the United States on January 7, 2026
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K
Omaha, US
★★★★★ 5
easy to put together, stable and blocks out unwanted eyes.
Size: 88''W-4 Panel, Color: Grey
If you live in a high rise building, or where there is lots of foot traffic and can see in your windows, this is a must have. It's portable, can fold down one or two walls and easy to move around. Put together once, and block out light and eyes while tall enough to see over. You can fold it up along the wall, and use it to block out the blinds or light when using a projector so that it's darker. You can use it to partician the room if you share one, and separate your pile of junk from your room so you don't look at it, can take quite a bit of towel weight and clothes and doesn't tip over. Sturdy bottom metal and easy to put together. I got the grey one, and glad I did. I use it everyday and is part of my room decor. I love it, and after using it for a few months it's quite durable. The quality is there for sure. A tad pricey, but worth it. Must have for a private person.
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Reviewed in the United States on March 28, 2026
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KKat 10
West Palm Beach, US
★★★★★ 5
Well made dividers.
Size: 88''W-4 Panel, Color: Grey
Very durable and stable. Once positioned, they stay upright and firm and don't wobble around. Good materials on both the panels and the frame that supports it. Great for any partitioning needs and a fair price for the quality you receive. Highly recommended.
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Reviewed in the United States on November 28, 2025
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Martha
Boise, US
★★★★★ 1
No se usó, llego incompleto
Size: 88''W-4 Panel, Color: Beige
Lo devolví, llego incompleto
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Reviewed in the United States on February 11, 2026
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884EVER
Whiting, US
★★★★★ 5
Great privacy screen
Size: 4 Panel-88"W, Color: Grey
Nice item, easy to assemble.
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