What large-format tiles installation requires
Large-format tiles have become a defining feature of modern design, from luxury homes to high-end retail and commercial spaces. Their clean lines and seamless aesthetic continue to drive demand -but as tile sizes grow, so do the challenges of achieving a reliable installation.
Unlike smaller formats, large tiles place greater stress on the entire system. Thermal expansion, substrate movement, moisture, and structural deflection all introduce forces that can compromise performance when the wrong adhesive is used. Traditional cement-based adhesives often lack the flexibility to handle these conditions, increasing the risk of debonding, hollow spots, cracked grout, and tile tenting.
To meet these demands, Weber introduces Ultra-flex S1 (12 hr) - a high-performance, deformable adhesive engineered for large-format installations. Built on advanced polymer technology, it delivers strong adhesion while maintaining the flexibility required to absorb movement within the system. This helps protect the integrity of the installation over time, even under fluctuating conditions
Common issues and queries you can face
Large format tiles demand high-performance adhesives
As tile sizes increase, the role of the adhesive becomes more critical. With fewer grout joints to dissipate stress, larger tiles rely heavily on the adhesive layer to manage movement.
Even the best adhesive needs the right substrate
However, even the most advanced adhesive can only perform as well as the substrate beneath it. Successful large-format tile installations require proper substrate preparation, adequate surface flatness, movement joint design, and correct installation techniques. As construction methods evolve and architectural trends continue pushing the boundaries of tile design, installation materials must evolve alongside them.
Designed for the next generation of large format tiling
As installation environments continue to evolve, the industry’s focus is shifting from simply fixing tiles to building complete, durable tile systems.
Engineered for today's largest tiles
Ultra-flex S1 (12 hr) is designed to perform under these pressures without compromising bond strength.
Versatile and reliable, it is suited to both internal and external applications across a wide range of environments, from residential floors and office developments to shopping centres, healthcare spaces, balconies, terraces, and high-rise projects.
Where strength meets flexibility
The Ultra-flex S1 12 hr adhesive range represents the next generation of tile adhesive technology combining flexibility, speed, strength, and durability in a single high-performance solution.
A smarter solution for large format tile installation
Ultra-flex 12 S1(12-hr) positions itself as a solution developed to meet the technical demands of large format tiling while supporting the long-term performance today’s projects require.
Find all our products near you in more than 2000 outlets