Description
ThermoSphere Waterproofing Tape is a flexible, stretchable sealing tape used to reinforce joints, internal corners and pipe penetrations when tanking floors and walls with ThermoSphere Waterproofing Paste ahead of tiling.
Key Benefits
- Flexible, stretchable tape bridges movement at joints and corners
- Bonds securely within ThermoSphere Waterproofing Paste
- Reinforces vulnerable points such as wall-to-floor junctions and pipe penetrations
- Helps prevent water ingress at high-risk detailing points
- Simple to cut and fold into internal and external corners
Applications
Used by tilers and wetroom installers wherever a tanking system needs reinforcing — floor-to-wall junctions, pipe collars, movement joints and corners in showers and wetrooms.
Performance & Features
Embedded into a wet coat of ThermoSphere Waterproofing Paste, the tape bridges any minor movement at joints and corners, maintaining a continuous waterproof barrier beneath the tiled finish.
Compatibility
Designed to be used with ThermoSphere Waterproofing Paste (HDM-WP-01) as part of a complete tanking system, alongside ThermoSphere decoupling membrane.
Available from Millcot alongside the full ThermoSphere wetroom and underfloor heating range.
FAQs
Where should I use this tape?
At all internal corners, floor-to-wall junctions, movement joints and around pipe penetrations before tiling.
How is it applied?
Embed the tape into a wet coat of ThermoSphere Waterproofing Paste, then apply a further coat of paste over the top.
Can it be used with other waterproofing pastes?
It is designed and tested for use with ThermoSphere Waterproofing Paste as part of a matched system.
Is it suitable for external corners as well as internal?
Yes, it can be folded and used at both internal and external corner details.

