H40 Ultimate White S2

Kerakoll H40 Ultimate – Ultra Flexible Gel Tile Adhesive

Achieve exceptional performance on even the most demanding projects with Kerakoll H40 Ultimate, a rapid-setting, ultra-flexible Gel-Adhesive designed for all types and sizes of tiles. Engineered with advanced Gel-Technology, it delivers outstanding adhesion, workability, and reliability across a wide range of substrates and environments.

Perfect for both internal and external applications, H40 Ultimate is the professional’s choice for fixing porcelain, ceramic, and natural stone tiles, including large format slabs and low-thickness materials.

Key Features

• S2 highly deformable adhesive – Maximum flexibility for challenging substrates
• Exceptional bond strength – Reliable performance on difficult surfaces
• Gel-Technology formula – Thixotropic or fluid consistency depending on application
• Rapid setting – Fast track installations with reduced downtime
• Highly polymer modified – Superior adhesion and durability
• Improved workability – Smooth, easy application for precise installation
• No warning label – Safer to handle on-site

Ideal Applications

H40 Ultimate is designed for fixing tiles in demanding environments:

• Porcelain, ceramic, and natural stone tiles
• Large format tiles and slabs (including sizes up to 300 × 150 cm)
• Low thickness and laminated stoneware
• Glass mosaics and decorative finishes

Suitable for:

• Floors and walls
• Internal and external use
• Wet areas including bathrooms, wet rooms, pools and spas
• Terraces, balconies, and façades
• High-traffic commercial and domestic spaces

Suitable Substrates

• Cement-based screeds and concrete
• Existing tiled surfaces (tile-on-tile)
• Underfloor heating systems
• Plasterboard, gypsum and anhydrite
• Timber, metal, PVC and specialist boards
• Waterproofing systems and insulation panels

Technical Details

• Classification: C2F S2 (EN 12004) – high performance, fast setting, highly deformable
• Pack size: 20kg
• Application thickness: 2 – 15mm
• Pot life: ~1 hour
• Open time: ≥ 20 minutes
• Adjustment time: ≥ 10 minutes
• Grouting time:
  • Walls: ~2 hours*
  • Floors: ~3 hours*
• Ready for light traffic: ~6–16 hours*

Coverage Guide

• Approx. 1.4 kg/m² per mm thickness

Storage & Shelf Life

• Shelf life: Approx. 12 months (unopened, original packaging)
• Storage: Protect from moisture and store in cool, dry conditions

Why Choose H40 Ultimate?

For high-end tile installations, performance and reliability are essential. Kerakoll H40 Ultimate offers maximum flexibility, superior adhesion, and rapid setting, making it the ideal adhesive for everything from standard tiling to large-format and technically demanding projects.