C1TE vs C2TE: which tile adhesive for which tile?

What the letters actually mean

Under the EN 12004 standard, every cement-based tile adhesive carries a short code. Reading it left to right:

• C — Cementitious (a cement-based adhesive).
• 1 or 2 — the bond strength. Class 1 is a normal-strength adhesive; Class 2 is a high-strength (improved) adhesive that grips harder and resists water and stress better.
• T — no slip / non-sag, so tiles stay put on a wall instead of sliding down.
• E — extended open time, giving you longer to place tiles before the adhesive skins over.

So C1TE is a normal-strength, no-slip, extended-open-time adhesive, and C2TE is the high-strength version of the same.

C1TE — the everyday workhorse

RAFSAZZ Tile Adhesive is a C1TE. It is the right choice for the majority of normal interior tiling: ceramic, vitrified and porcelain tiles on sound walls and floors, in dry and normal areas. It bonds reliably, holds tiles without slipping, and gives you time to work — at a sensible cost for everyday jobs.

C2TE — when the job is demanding

RAFSAZZ Marble Adhesive is a C2TE. The higher bond strength matters when the tile is heavy, the stone is sensitive, or the area is wet or stressed:

• Marble, granite and natural stone — heavy and, in the case of marble, prone to staining from weaker adhesives.
• Large-format tiles and slabs — more weight per tile needs a stronger grip.
• Wet and demanding areas — bathrooms, balconies and exteriors where water and temperature move the substrate.

For permanently submerged areas such as swimming pools, use the purpose-built RAFSAZZ Swimming Pool Adhesive, formulated to stay put under constant water.

Quick decision guide

When in doubt, going one class up rarely hurts the bond — it mainly costs a little more. Going one class under, on a demanding tile, is where failures start.

Why the class is worth trusting

A class only means something if the adhesive is actually made and tested to it. RAFSAZZ adhesives are produced to fixed formulations using imported German raw materials, and our adhesives are independently lab-tested and classified to EN 12004 — so a bag marked C1TE or C2TE performs to that class, batch after batch.

Frequently asked questions