ARDEX X7W PLUS - White flexible tile adhesive resists water and frost

Special cement-based flexible adhesive in white colour with high resistance to water and frost. Deformable and waterproof. Very high tensile, compressive and flexural strength. Improves performance by 30%. White colour. Complies with EN 12004 C2 TE S1.

Color ES
  • White
Packaging format
Tax excluded


C2TES1   EC1   EC1   Marcado CE

Flexible white cement-based adhesive with high resistance to water and frost. Deformable and waterproof. Very high tensile, compressive and flexural strength. Improves performance by 30%. White colour. Complies with EN 12004 C2 TE S1.

Field of application:

For interiors and exteriors. On floors and walls.

Laying of:

  • Stoneware and tile flooring.
  • Catalan tiles, terracotta and rustic stoneware.
  • Vitreous and porcelain mosaics.
  • Concrete slabs.
  • Natural stone pieces.
  • Porcelain stoneware.
  • Highly vitrified pieces in interiors.

Laying of:

  • Building boards, e.g. plasterboard.
  • Insulation boards made of pressed foam or mineral fibres.
  • Lightweight boards (e.g. mortar-coated compressed foam, sandwich panels).
  • Ceiling and acoustic insulation boards.
  • Ceramic tiles in swimming pools.
  • Suitable for floors with underfloor heating.

Product description:

Powder with grey and white coloured cement, putty, synthetic resins and selected additives.

When mixed with water the result is a flexible adhesive that hardens by hydration and drying. It is waterproof and weatherproof within a few days. It adheres perfectly on any substrate, such as concrete, cement screeds, anhydrite screeds, plaster, plaster, masonry and similar substrates, creating a firm bond between the different building materials.

Substrate preparation:

ARDEX X7WPLUS adheres to both dry and damp substrates but these must be firm, resilient, grippy and free of separating agents.

Porous and gypsum substrates must be dry and treated with ARDEX P51 primer diluted 1:3 with water.

Gypsum plaster and render must be applied in a single coat at least 10 mm thick and must not be felted or polished.

Non-porous substrates such as ceramics, metal, glass, varnish coatings, etc. must be primed with ARDEX P82 in interiors and in dry areas. For exterior applications over existing tiles, the tiles must be primed with ARDEX P4.

In areas with dampness (bathrooms, kitchens, shower trays, etc) or outdoors (terraces, balconies, etc), we recommend the use of ARDEX 8+9 waterproofing membrane.

Instructions for use:

Pour clean water into a mixing container and add the ARDEX X7WPLUS powder, stirring vigorously until a flexible, homogeneous, lump-free mortar is obtained. To improve flexibility and full contact with the workpiece, the mortar should be stirred again before application to the substrate.

Amount of water required for mixing:

ARDEX X7W PLUS: 9 1/2 l of water per 25 kg bag.

At a temperature of 20°C, the mortar is workable for approximately 5 hours.

Apply the mortar on the substrate and comb it with a notched trowel vertically. The choice of trowel depends on the surface of the substrate and the type and size of the workpiece. In the case of surfaces that have to support high loads, it is advisable to apply it using the double-gluing method in order to achieve the most complete wetting possible.

The working area should not be larger than that which allows the workpieces to be placed on a wet bed for 20 minutes.

Uneven and rough substrates can be levelled and smoothed with the same mortar. Laying can be carried out after the mastic layer has hardened.

When fixing the insulation boards, the mortar should be applied from behind in strips or in spots.

If the boards are not porous, they should first be trowelled.

If in doubt, carry out a test beforehand.

Work ARDEX X7W PLUS at temperatures above +5°C and below +30°C.


For interior installation of water-sensitive natural stone, especially for the installation of light and translucent marble, we recommend applying ARDEX S27W to avoid the appearance of stains on the piece.

ARDEX WA, both in adhesive and grout, is recommended when resistance to chemicals and aggressive cleaning is required, e.g.: swimming pools, spas, food industry, tanks, etc.

For laying large format pieces and natural stone on facades it is advisable to apply ARDEX X77, special flexible adhesive C2TES1.


Contains cement. Irritating to eyes and skin. Keep out of reach of children. Avoid any contact with eyes and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective gloves. In set state is physiologically and ecologically harmless.

GISCODE ZP1 = product containing cement, low chromate content.

Technical data

Mixing ratio:

Approx. 9 1/2 l of water: 25 kg of powder which is.

equivalent to 1 vol. water : 2 vol. powder.

Density: 1.3 kg/litre.

Density of mortar when fresh: Approx. 1.4 kg/litre.


On smooth substrates:

Approx. 1.1 kg/m² with a 3x3x3 notched trowel.

Approx. 1.9 kg/m² with a 6x6x6 notched trowel.

Approx. 2.8 kg/m² with 8x8x8 notched trowel

Working time (20°C): Approx. 5 hours.

Setting time (20°C): (open time) Approx. 30 minutes.

Setting time (20°C): Approx. 20 - 25 minutes.

Workability (20°C): Approx. 24 hours (20°C).

Grouting of walls: Approx. 8 hours (20°C).

Tensile strength: 

 -After 28 days:

 -dry/wet: 1-1.7 N/mm2

 -freeze/thaw:1-1.5 N/mm2

 -Suitable for underfloor heating: Yes.

 -Packaging: 25 kg bags.

 -Storage: Approx. 12 months in a dry place in its original sealed packaging.

Product Details

Indoor and outdoor
Single component
Floor and wall
Normative UNE
UNE 12004 C2 TE S1
UNE 12004 - Type
C - Cementitious adhesive
UNE 12004 - Adherence
C2 - High adhesion
UNE 12004 - Drying time
Normal drying
UNE 12004 - Slipping
T - Reduced slip
UNE 12004 - Open time
E - Long open time
UNE 12004 - Deformability
S1 - Deformable
Drying time
Marked CE
Quality certificate
ISO 9001 - LLoyds Register Quality Assurance Limited


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