HOVACO Flexible Stone & Slab Adhesive C2TES1

Highly Deformable Cementitious Adhesive – Class C2TES1 according to EN 12004 & EN 12002

Product Description

HOVACO Flexible Stone & Slab Adhesive C2TES1 is a high-performance, polymer-modified, flexible cement-based adhesive specially designed for fixing large format tiles, porcelain slabs, and natural stones in critical and highly stressed applications.
Thanks to its high deformability (S1), extended open time, and excellent adhesion, it is ideal for substrates subject to movement, thermal variations, and vibration such as heated floors, facades, swimming pools, and industrial floors.

This product complies with EN 12004 Class C2TES1 and EN 12002 for deformability.

Learn how to select the appropriate adhesive classification in our guide comparing C1, C2TE, and C2TES1 tile adhesive.

Classification

Standard: EN 12004 / EN 12002
Class: C2TES1
C2: Improved cementitious adhesive
T: Reduced slip
E: Extended open time
S1: Deformable
Product Type: Highly flexible polymer-modified tile and stone adhesive

Key advantages:

  • EN 12004 Class C2TES1 compliant
  • High flexibility (S1) for moving and heated substrates
  • Excellent adhesion to porcelain slabs and natural stone
  • Extended open time and reduced slip
  • Suitable for swimming pools, facades, and underfloor heating
  • Ideal for large format tiles and thin slabs
  • Reliable performance in extreme temperature variations

Flexible adhesive systems are recommended for demanding applications exposed to movement and temperature variation.

Technical Data:

Property

Value

Appearance

Grey / White powder

Bulk Density

1.45 – 1.65 g/cm³

Mixing Ratio

7 – 8 liters of water per 25kg

Open Time

≥ 30 minutes

Adjustment Time

20 – 30 minutes

Pot Life

3 – 4 hours

Slip

≤ 0.5 mm

Tensile Adhesive Strength (28days)

≥ 1 N/mm²

After Water Immersion

≥ 1 N/mm²

After Heat Aging

≥ 1 N/mm²

After Freeze-Thaw Cycles

≥ 1 N/mm²

Deformability

≥ 2.5 N/mm² (S1)

Application Temperature

+5C° to +35 C°

Need detailed technical documentation?

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Applications:

Suitable for fixing:

  • Large format porcelain slabs
  • Natural stone (marble, granite, travertine non-moisture sensitive)
  • Thin porcelain panels
  • Glass mosaic (with suitable substrate preparation)

Typical substrates:

  • Concrete and reinforced concrete
  • Cement screeds and heated floors
  • Existing ceramic tiles (tile-on-tile)
  • Facades and balconies
  • Swimming pools and wet areas
  • Industrial and commercial floors

For interior and exterior floors and walls.

Proper adhesive selection and installation methods play a critical role in preventing common tile installation failures.

  • Substrates must be structurally sound, clean, and free from dust, oil, grease, and loose particles.
  • Cracked or unstable substrates should be treated with suitable reinforcement systems.
  • For highly absorbent or critical substrates, apply appropriate HOVACO primers.
  • Ensure flatness suitable for large format tiles.
  • Mix 25 kg of powder with 7-8 liters of clean water using a low-speed mixer.
  • Mix until a smooth, lump-free, creamy consistency is obtained.
  • Allow the mix to rest for 3-5 minutes, then remix.
  • Apply adhesive on the substrate using a suitable notched trowel.
  • For large format tiles and slabs, apply the double-buttering method (on substrate and tile back).
  • Place tiles within the open time and press firmly to ensure full contact.

Coverage

Approx. 3 – 5 kg/m2 depending on tile size, slab thickness, and trowel notch.

Packaging

25 kg paper bags
Big bags available on request

Storage & Shelf Life

Store in dry conditions on pallets, protected from moisture.
Shelf life: 12 months from production date in unopened original packaging.

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