Description
Larsen Rapid Tank 360 is an easily applied, fast-setting, flexible two-part tanking slurry with excellent bonding to mineral surfaces. Formulated to bridge gaps of up to 1mm, it delivers durable, rapid waterproof protection for internal and external applications, making it a genuinely time-saving choice where programme speed matters as much as long-term performance.
Key Benefits
Rapid Tank 360 sets significantly faster than standard tanking slurries, with tiling possible after just 4–5 hours rather than the following day. Its flexible, crack-bridging formulation copes with minor substrate movement, while excellent adhesion to concrete, masonry, plasters and heated screeds makes it a genuinely versatile choice across domestic and commercial wet area projects.
Applications
Suitable for tanking floors and walls in wet rooms, bathrooms, showers and other water-risk areas prior to tiling, as well as swimming pools, water tanks and cellars. Performs reliably over concrete, masonry, aerated concrete, plasters and heated screeds, internally and externally.
Performance & Features
- Fast-setting — tile after 4–5 hours
- Bridges gaps and hairline cracks up to 1mm
- Excellent bonding to mineral substrates
- Suitable for internal and external use
- Full water pressure resistance after 3 days
- Two-part system for consistent, controlled mixing
Compatibility
Pair with Larsen tanking tape at internal corners, external corners and pipe junctions, and with Larsen tile adhesives once fully cured, for a complete, specification-backed tanking system.
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
- Two-part flexible tanking slurry
- Rapid setting — significantly faster than standard tanking systems
- Bridges gaps and hairline cracks up to 1mm
- Suitable for heated screeds
- For walls and floors, internal and external use
- Grey finish
Applications
- Wetroom and shower floor and wall tanking
- Bathroom waterproofing before tiling
- Swimming pool tanking
- Water tank and cellar waterproofing
- Heated screed floor waterproofing
- Commercial and domestic wet area projects
Technical Specifications
- Unit size: 10kg (two-part, supplied as 5kg bags)
- Colour: Grey
- Coverage rate: Approximately 1.3–1.6kg/m² per mm of layer thickness
- Coats required: Minimum 2 coats, 90 minutes apart
- Pot life: Approximately 45 minutes at 20°C
- Covering time: After 4 hours
- Tiling time: After 4–5 hours
- Full water pressure resistance: After 3 days
- Walkable: After 24 hours
- Application temperature: +5°C to +30°C
- Shelf life: 6 months unopened, stored in dry conditions
Timings and coverage vary with temperature, substrate porosity and site conditions. Refer to the full technical datasheet before specifying.
What's Included
One 10kg pack of Rapid Tank 360, supplied as two-part 5kg bags, ready to mix and apply on site.
FAQs
How quickly can I tile after applying Rapid Tank 360?
Tiling can typically begin after 4–5 hours, significantly faster than standard tanking slurries.
How many coats does Rapid Tank 360 need?
A minimum of two coats is required, applied approximately 90 minutes apart.
Is Rapid Tank 360 suitable for underfloor/heated screeds?
Yes, it is suitable for use over heated screeds as part of a correctly prepared floor build-up.
Can Rapid Tank 360 be used externally?
Yes, it is suitable for both internal and external applications, including swimming pools and water tanks.
What size gaps or cracks will Rapid Tank 360 bridge?
It bridges gaps and hairline cracks up to 1mm.
How long before the tanking can withstand standing water?
Full resistance to water pressure is reached after 3 days.