The Bond-It CTA Flexible Tile Adhesive (Grey) is a high-performance, water-resistant, cement-based adhesive designed for fixing ceramic, porcelain, vitrified, mosaic, and natural stone tiles to a wide range of substrates. Engineered to meet BS EN12004 C2TES2 standards, this flexible adhesive delivers excellent bond strength, non-slip application, and is ideal for use with underfloor heating systems or substrates subject to limited movement.
Bond-It CTA Flexible is suitable for bonding to:
Designed for professional tilers and demanding installations, this adhesive balances strength with flexibility. It’s especially suited for projects where thermal expansion and contraction occur—such as with underfloor heating—and where traditional rigid adhesives might fail. Whether you’re tiling a modern wet room, a kitchen floor, or a commercial space, Bond-It CTA Flexible provides long-term durability and reliability.
✅ Yes. It is specifically rated for use with underfloor heating systems. Its C2TES2 classification ensures it can tolerate limited movement and temperature cycling without debonding or cracking.
✅ Yes, provided the surface is sound, clean, and dust-free. For high-movement or structural layers, you may wish to confirm with your structural engineer or Bond-It’s technical team if an epoxy or PU alternative would offer additional resilience.
C2TES2 indicates a cementitious (C) adhesive with:
This makes it perfect for large-format porcelain and heated floors.
✅ Yes. It is water-resistant and frost-tolerant, making it suitable for exterior applications when applied on sound substrates.
Apply as a thin-bed adhesive (2–10mm) using a notched trowel. Avoid excessive build-up which may impact drying and performance.
Avoid unstable or flexible substrates (e.g. timber floors without proper backer boards) or surfaces contaminated with oil, paint, or curing agents. Always ensure good surface preparation.
Once mixed, you have approximately 3–4 hours pot life and up to 30 minutes open time (at 20°C). Avoid applying beyond the tacky stage.
Flexible adhesives like CTA absorb movement and temperature changes, making them suitable for underfloor heating or slightly mobile substrates. Standard adhesives are rigid and best for stable surfaces only.
Yes, CTA Flexible is suitable for both. However, for vertical applications, ensure you use the correct trowel notch and don’t overload the wall.
In most cases, priming is recommended on porous substrates to control suction and enhance adhesion. Always follow Bond-It’s surface preparation guidelines.
Allow approximately 24 hours at 20°C before grouting. Colder conditions may extend the curing period.
Yes, if the boards are cement-faced and rigid (such as foam backer boards). Ensure they’re securely fixed and use a flexible adhesive like CTA.
Keep sealed in a cool, dry place. Avoid frost. Shelf life is typically 12 months from manufacture.
✅ Yes. Once fully cured, CTA Flexible is both waterproof and frost-resistant, ideal for patios or exterior tiles.
