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Home Products LLPT Joist Tape for Decking | Beam Joist Protection Flashing Tape | Heavy Duty Waterproof Butyl Sealant | for Wood Decks Roof Building Joists Beams(JDT250P1) | 50mm x 15m
New LLPT Joist Tape for Decking | Beam Joist Protection Flashing Tape | Heavy Duty Waterproof Butyl Sealant | for Wood Decks Roof Building Joists Beams(JDT250P1) | 50mm x 15m
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LLPT Heavy Duty Joist Tape - Waterproof Butyl Sealant for Wood Decks, 50mm x 15m

£9.99
Price updated on: 27/01/2026 at 19:34
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Key Takeaway

Protect your wood decks and roof joists with this heavy-duty waterproof butyl sealant tape, designed specifically for beam and joist protection. At just £9.99, this 50mm x 15m tape offers reliable sealing against moisture, making it an essential choice for builders and DIY enthusiasts alike. Ensure the longevity of your outdoor structures with this durable and effective flashing tape!

Frequently Asked Questions

What is LLPT Joist Tape for Decking?

LLPT Joist Tape for Decking is a heavy-duty waterproof butyl sealant designed to protect wood decking and building joists. It acts as a flashing tape that prevents moisture damage, extending the lifespan of your structures.

How much does LLPT Joist Tape for Decking cost?

LLPT Joist Tape for Decking is priced at £9.99. This cost offers excellent value for its durability and protective qualities, making it a smart investment for deck maintenance.

What are the key features of LLPT Joist Tape for Decking?

Key features of LLPT Joist Tape include its 50mm width and 15m length, providing ample coverage for various projects. It is also heavy-duty and waterproof, ensuring reliable protection against moisture.

Who is LLPT Joist Tape for Decking best for?

LLPT Joist Tape is ideal for homeowners, contractors, and builders looking to protect wood decks and joists. It is particularly useful for anyone involved in construction or renovation projects requiring moisture protection.

How do I use/care for LLPT Joist Tape for Decking?

To use LLPT Joist Tape, simply peel off the backing and apply it directly to clean, dry surfaces of joists or beams. For best results, ensure the area is free of dust and debris before application for optimal adhesion.

Product Highlights

  • LIFETIME DURABILITY: LLPT butyl joist tape is rated to last up to 50 years, providing unparalleled protection against moisture, UV rays, steam, and extreme temperatures. This tape requires zero maintenance, effectively extending the lifespan of beams, joists, and screw points. Whether facing harsh sun or heavy rain, this tape ensures your deck's structural elements remain in top condition, offering a worry-free solution that saves time and money on repairs and replacements over decades of use.
  • EASY INSTALLATION: LLPT deck flashing tape comes with a quick-release liner, making it incredibly flexible and easy to install, even on uneven surfaces. This feature speeds up the installation process significantly. Simply clean and dry the surface for optimal adhesion, then apply the tape. Its user-friendly design ensures that both professionals and DIY enthusiasts can achieve a perfect seal quickly and efficiently, enhancing productivity and reducing installation time.
  • SUPERIOR ADHESION STRENGTH: Engineered for maximum performance, LLPT deck tape offer heavy duty shear stress resistance and 50g/cm adhesive tensile strength. The best choice for joist protection, providing a strong, reliable bond that withstands the rigors of construction by daily use. Contractors and homeowners alike can trust this tape to maintain structural integrity, ensuring long-lasting protection and durability for all decking projects.
  • FULL WEATHER WATERPROOF: Designed to withstand extreme temperatures from -25°C to 80°C, LLPT joist hanger tape remains stable under high humidity and UV exposure without becoming a gooey mess. It offers airtight sealing, effectively protecting deck joists from moisture and vapor. This high-performance tape meets and exceeds industry standards, ensuring your deck remains protected in all weather conditions, thereby preventing costly moisture damage and prolonging the life of your deck.
  • ADVANCED CONSTRUCTION: LLPT deck joist tape features a thick butyl adhesive layer, a smooth UV-resistant rubber layer, and an oil paper backing for easy peeling and application. This high-viscosity, waterproof tape reliably blocks water, oil, grease, moisture, and corrosive chemicals, providing superior defense against moisture infiltration. It extends the lifespan of your deck by preventing damage, ensuring peace of mind and maintaining your outdoor space's integrity.
  • Attention: To ensure the adhesion of the tape, make sure the surface of the wood is dry before use.

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