Description
Larsen Self-Adhesive Tanking Tape is a ready-for-use, self-adhesive butyl rubber flexible joint sealing tape designed to waterproof junctions, corners and seams before tiling. A non-woven fabric coating on one side gives excellent adhesion to subsequent applications of waterproof membranes or tile adhesive, making it a fast, reliable way to reinforce the most vulnerable points of any tanking system.
Key Benefits
With an instant, self-adhesive bond, Larsen Tanking Tape removes the need for a separate adhesive or primer at most junctions, saving time on site. Its flexible butyl rubber core moves with the substrate rather than cracking, giving long-term protection at wall-to-floor junctions, corners and pipe penetrations — the points most likely to fail in a poorly detailed tanking system.
Applications
Used to reinforce internal corners, external corners, wall-to-floor junctions and pipe penetrations as part of a complete tanking system in wet rooms, showers, bathrooms and other water-risk areas, on both walls and floors.
Performance & Features
- Self-adhesive — instant seal, no separate adhesive required
- Flexible butyl rubber construction
- Non-woven fabric coating for excellent membrane and adhesive adhesion
- 120mm width for confident coverage of junctions and corners
- Grey finish
Compatibility
Use alongside Larsen Rapid Tank 360 or Larsen Waterproof Tanking Membrane as part of a complete, specification-backed tanking system for wetrooms, showers and bathrooms.
Millcot supplies genuine Larsen trade products with full technical and safety datasheets, backed by knowledgeable trade support — helping you specify and install with confidence.
Key Features
- Ready to use, self-adhesive application
- Waterproof butyl rubber core
- Quick and easy — instant seal
- Excellent adhesion to waterproof membranes and adhesives
- Available in 5m and 20m rolls to suit any size of job
- Suitable for walls and floors
Applications
- Wall-to-floor junction sealing in wet rooms and showers
- Internal and external corner reinforcement
- Pipe penetration sealing
- Bathroom and kitchen waterproofing detail work
- Reinforcing joints ahead of tanking slurry or membrane application
- Commercial and domestic wet area tanking systems
Technical Specifications
- Roll lengths: 5m or 20m
- Width: 120mm
- Thickness: Approximately 0.65mm
- Material: Butyl rubber with non-woven fabric coating
- Colour: Grey
- Application temperature: +5°C to +30°C
- Weight: Approximately 0.45kg per 5m roll
Refer to the full technical datasheet and Declaration of Performance for complete application guidance.
What's Included
One roll of Larsen Self-Adhesive Tanking Tape, 120mm wide, supplied in either a 5m or 20m length. Select the size that suits your job from the dropdown above.
FAQs
Do I need a separate adhesive to apply this tape?
No, it is self-adhesive and ready to use straight from the roll.
Can this tape be used on both walls and floors?
Yes, it is suitable for wall and floor junctions and corners.
What width is the tape?
The tape is 120mm wide, supplied in 5m or 20m rolls.
Can I tile or apply membrane directly over the tape?
Yes, the non-woven fabric coating is designed for excellent adhesion to subsequent waterproof membranes or tile adhesive.
Which size roll should I order?
The 5m roll suits smaller domestic jobs such as a single shower enclosure, while the 20m roll is more economical for larger or multiple wetroom installations.
What is the tape made from?
A flexible butyl rubber core with a non-woven fabric coating on one side.