Description
The Larsen Fibreflex Rapid Set+ is a specially formulated, fully flexible, S1-rated, fast-setting cement-based tile adhesive built for professionals who need speed without compromise. With a grout time of just 3 hours and full traffic at 6 hours, it's the go-to choice for fast-paced commercial projects where downtime is not an option.
Suitable for floor and wall applications, interior and exterior, including heated screeds, over-boarded timber, and swimming pools. This full pallet — 48 x 20kg bags with tail lift delivery — is ideal for large commercial contracts and trade contractors.
Key Benefits
- 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. Recommended for porcelain, ceramic, natural stone, glass mosaics, and large-format tiles. Ideal for demanding substrates including heated screeds, over-boarded timber, and swimming pools where rapid turnaround and flexibility are both required.
Technical Specifications
- Classification: BS EN 12004 Type C2FS1
- Colour: Grey
- 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: WBRM451G20
What's Included
- 48 x 20kg bags of Larsen Fibreflex Rapid Set+ Grey tile adhesive
- Tail lift delivery included
Frequently Asked Questions
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.
What tiles is it suitable for?
Porcelain, ceramic, natural stone, glass mosaics, and large-format tiles on floors and walls, interior and exterior.
Why buy a full pallet?
A full pallet of 48 bags provides the best value per bag and includes tail lift delivery, making it 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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