Description
The Larsen Fibreflex Rapid Set+ in white is a specially formulated, fully flexible, S1-rated, fast-setting cement-based tile adhesive. The white formulation is the preferred choice when working with light-coloured, translucent, or glass tiles where a grey adhesive bed could affect the finished appearance — without sacrificing the rapid set performance that makes this product essential on fast-paced sites.
With a grout time of just 3 hours and full traffic at 6 hours, it's ideal for commercial projects where turnaround is critical. Suitable for heated screeds, over-boarded timber, and swimming pools. This full pallet — 48 x 20kg bags with tail lift delivery — suits large commercial projects and trade contractors.
Key Benefits
- White formulation – ideal for light, translucent, or glass tiles where adhesive colour is visible
- Fast-setting – grout after just 3 hours, full traffic at 6 hours
- Fully flexible S1-rated – absorbs movement and thermal stress
- C2 classification – superior bond strength versus standard C1 adhesives
- Non-slip formula – safe for wall and large-format tile applications
- Suitable for heated screeds and underfloor heating systems
- Suitable for over-boarded timber substrates
- Recommended for swimming pools and wetrooms
- BS EN 12004 Type C2FS1 certified
Applications
Suitable for interior and exterior floor and wall tiling. Particularly recommended where adhesive colour may show through — white-bodied porcelain, glass mosaics, translucent natural stone, and light-coloured large-format tiles. Also ideal for demanding substrates including heated screeds, over-boarded timber, and swimming pools.
Technical Specifications
- Classification: BS EN 12004 Type C2FS1
- Colour: White
- Form: Powder
- Pack Size: 20kg bag
- Pallet Quantity: 48 bags (tail lift delivery)
- Coverage: 4kg/m² @ 3mm bed
- Bed Thickness: 3–12mm (up to 20mm in small isolated areas)
- Mixing Ratio: 20kg bag to approx. 4.5L water
- Pot Life: Approx. 45 minutes @ 20°C
- Application Temperature: +5°C to +30°C
- Grout After: 3 hours
- Light Foot Traffic: 3 hours
- Full Traffic: 6 hours
- Shelf Life: 6 months in unopened original packaging
- Storage: Store in sealed containers in dry conditions, protected from extremes of temperature
- Packaging: 20kg multiwall sealed paper sacks
- SKU: WBRM451W20
What's Included
- 48 x 20kg bags of Larsen Fibreflex Rapid Set+ White tile adhesive
- Tail lift delivery included
Frequently Asked Questions
When should I use white adhesive instead of grey?
White adhesive is recommended for light-coloured, translucent, or glass tiles where a grey adhesive bed could show through and affect the visual finish of the installation.
How quickly can I grout after using Rapid Set+?
You can grout after just 3 hours. Light foot traffic is also safe after 3 hours, with full traffic at 6 hours.
Can it be used on underfloor heating?
Yes. Larsen Fibreflex Rapid Set+ is specifically recommended for heated screeds and underfloor heating systems.
Is it suitable for timber substrates?
Yes, it is recommended for use over boarded timber substrates where its flexible S1 rating accommodates movement.
Can it be used in swimming pools?
Yes. The S1 flexibility and C2 bond strength make it suitable for swimming pools and other permanently wet environments.
Why buy a full pallet?
A full pallet of 48 bags provides the best value per bag and includes tail lift delivery, ideal for large commercial projects and trade stockists.
Millcot supplies trade professionals with the products they trust. All orders are dispatched promptly with full product support available from our team.
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