Larsen Fibreflex™ Semi-Rapid Set+ – The Ultimate Flexible Tile Adhesive for Professional
Installations
When it comes to high-performance tile adhesives, versatility is key. Larsen Fibreflex™ Semi-Rapid Set+ (Pink Pro Bag) has been engineered to meet the demands of modern tiling projects, offering exceptional flexibility, superior bond strength, and multiple application options in a single product.
Combining Larsen's exclusive Fibreflex™ technology with innovative Advanced HydroGel Technology, this premium C2 TE S1 rated tile adhesive delivers outstanding performance on both wall and floor installations. Whether you're working with large format porcelain tiles, natural stone, or modern tile panels, Semi-Rapid Set+ provides the reliability and flexibility professionals need.
What is Larsen Fibreflex™ Technology?
At the heart of Semi-Rapid Set+ is Larsen Fibreflex™ technology, which incorporates specially selected microfibre particles throughout the adhesive formulation. These fibres enhance flexibility and adhesion, helping to create a stronger and more durable bond between the tile and substrate.
This advanced technology helps the adhesive withstand common installation challenges, including:
- Thermal movement and expansion
- Substrate vibration
- Minor structural movement
- Crack resistance
- Improved water resistance
- Long-term durability
The result is a flexible tile adhesive that performs exceptionally well in demanding residential and commercial environments.
Understanding the C2 TE S1 Rating
Larsen Fibreflex™ Semi-Rapid Set+ meets the requirements of the EN 12004 European Standard and carries a C2 TE S1 classification, providing confidence in its performance and quality.
What Does C2 TE S1 Mean?
C2 – Improved Adhesion Strength
Provides enhanced bonding performance for increased durability and long-lasting tile installations.
T – Reduced Slip
Helps prevent tiles from sliding during installation, making vertical applications easier and more precise.
E – Extended Open Time
Offers installers more working time to position and adjust tiles before the adhesive begins to set.
S1 – Flexible Deformability
Allows the adhesive to accommodate movement within the
substrate, reducing the risk of cracking and tile failure.
These performance characteristics make Semi-Rapid Set+ an ideal adhesive for challenging installations, including underfloor heating systems, large format tiles, and areas exposed to temperature fluctuations.
Advanced HydroGel Technology Explained
One of the standout features of Larsen Fibreflex™ Semi-Rapid Set+ is its Advanced HydroGel Technology.
When mixed with water, the adhesive transforms into a smooth, full-bodied gel consistency with excellent workability. This thixotropic behaviour improves handling, trowelling, and coverage while maintaining strong grab and reduced tile slip.
The HydroGel formulation is particularly beneficial when installing:
- Large format porcelain tiles
- Slim porcelain panels
- Natural stone tiles
- Floor and wall tiling systems
- Commercial tiling projects
The enhanced consistency allows for easier application and improved contact between the tile and substrate.
Three Mixing Options for Maximum Versatility
Unlike many traditional tile adhesives, Larsen Fibreflex™ Semi-Rapid Set+ offers three distinct mixing ratios, allowing installers to tailor the adhesive consistency to suit different applications.
5 Litres of Water
Creates a highly thixotropic wall and floor tile adhesive with excellent non-slip characteristics.
Ideal for:
- Wall tiling
- Large format wall tiles
- Vertical installations
5.5 Litres of Water
Produces a smooth, trowelable adhesive suitable for both walls and floors.
Ideal for:
- General-purpose tiling
- Domestic installations
- Commercial flooring projects
6 Litres of Water
Creates a semi-pourable thick-bed floor tile adhesive designed for demanding floor applications.
Ideal for:
- Thick-bed installations
- Floor tiling projects
- Large-format floor tiles
This unique flexibility allows tilers to adapt the product to the specific requirements of each project without changing adhesives.
Designed for Speed and Performance
Semi-Rapid Set+ is a fully flexible, cement-based tile adhesive featuring a specially formulated semi-rapid setting binder. This advanced formulation delivers the perfect balance between extended working time and rapid strength development.
Key performance benefits include:
- Long pot life
- Extended open time
- Rapid strength gain
- Excellent tile support
- High bond performance
- Reduced tile slip
- Flexible installation capability
These characteristics help professional tilers work efficiently while maintaining the highest installation standards.
Why Professional Tilers Choose Larsen Fibreflex™Semi-Rapid Set+
The combination of Fibreflex™ microfibre reinforcement, Advanced HydroGel Technology, and C2 TE S1 certification has made Semi-Rapid Set+ a trusted choice throughout the UK and Ireland.
Whether you're installing porcelain tiles, ceramic wall tiles, natural stone, or large format panels, this versatile adhesive delivers exceptional performance, flexibility, and reliability across a wide range of tiling applications.
Available in both White and Grey finishes, Larsen Fibreflex™ Semi-Rapid Set+ is supplied in convenient 20kg bags, providing a professional-grade solution for residential, commercial, and industrial tiling projects.