VapourSeal Joist Protection Tape Perth
VapourSeal helps deliver long-term protection for your deck frame.
VapourSeal is a premium, self-adhering sealing tape designed to create a permanent seal and offer protection on top of joists, bearers and other subframe members.
The multi-purpose sealing tape is UV resistant, waterproof and hand tearable, which benefits the building process while extending the longevity of the deck.

UV resistance

Waterproof

Hand tearable
Get A Quote
Whether you know what decking you want, or you’d like a quote on a variety of products, talk to Decking Perth. We offer competitive prices on all products and accessories which are sourced from local and international suppliers.
Click the button below to start.
VISIT SHOWROOM
If you’d like to see and feel your decking before you buy, come and visit our showroom in Balcatta or Mosman Park. We have displays of timber decking and composite timber that you can walk on to get a real feel of how your decking will look.
Click the button below to arrange a visit.
LOOKING FOR HELP BUILDING YOUR DECK?
How to use VapourSeal
VapourSeal is quick to apply directly to the frame. For deck joists and bearers, roll it on along the top edge, apply firm pressure to achieve maximum adhesion then fold the edges over so moisture runs off. During installation, it can be repositioned in the immediate short term if you need to correct alignment.
What makes installation easier
- Self-wound with no liner, so there’s no backing paper waste
- Hand tearable, so no knives or scissors required
Why choose VapourSeal?
Built for harsh conditions
VapourSeal is designed with a premium acrylic adhesive system and is designed specifically for Australian building applications.
Less mess, faster installs
Because it’s self-wound (no liner), you avoid the usual backing paper waste on site.
More than joist tape
Permanent sealing applications include protection of timber and steel joists, window flashings and sealing a variety of other surfaces. VapourSeal is also used to seal and join vapour permeable wall wraps to help create a permanent seal and moisture barrier, supporting improved thermal efficiency by controlling airflow through the building envelope.
Performs like the original G-Tape
VapourSeal is manufactured by the same company, in the same factory in Japan as the original G-Tape.
Key features
- UV resistant
Waterproof
Matte black resin cloth tape
No liner, no backing paper waste
Hand tearable
Repositionable in the immediate short term during install
Multi-purpose for joists, wraps and flashing
Key features

UV resistant

Waterproof

Matte black resin cloth tape

No liner, no backing paper waste

Hand tearable

Repositionable in the immediate short term during install

Multi-purpose for joists, wraps and flashing
Technical Specifications
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Type Self-wound adhesive tape (no liner)
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Finish Matte black resin cloth
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Roll sizes 50mm x 20m and 100mm x 20m
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Applicator Available
LOOKING FOR HELP BUILDING YOUR DECK?
If you’re ordering decking and subframe materials, we can include VapourSeal in a complete supply quote so everything arrives ready to build.
VapourSeal FAQs
It’s designed to form permanent, sustainable seals and protection over joists, bearers and other subframe members.
Yes. Permanent sealing applications include protection of timber and steel joists. It can also reduce the squeaks associated with steel framing.
Yes, it is waterproof and UV resistant.
No. VapourSeal is self-wound with no liner, meaning no backing paper and less waste.
Yes, it’s hand tearable which makes application easier on site.
Yes, it can be repositioned in the immediate short term during installation.
Common widths include 50mm and 100mm.
Apply it directly to the frame, press firmly to maximise adhesion then fold the edges over the frame so moisture runs off.
You can purchase online or visit the Balcatta or Mosman Park showrooms to get advice and pick up what you need.








































