Batimix Tile Adhesive WE-440

Description

BATIMIX Tile Adhesive WE-440 is a high-performance two-component cementitious-based product that has improved flexibility and waterproofing properties.

The powder component (A) is made of Portland cement , fillers, fine-graded sand, special additives, and sealing compounds to achieve improved waterproofing. The liquid component (B) is based on elastomer and synthetic-rubber latex resins to achieve enhanced flexibility and bonding strength.

Main Purpose

BATIMIX Tile Adhesive WE-440 is used for inside or outside fixing of large-size natural or reconstructed tiles and stones and where waterproofing and high-performance properties are required. Substrates on which this product may be applied include concrete, cement-based plasters, whether painted or not, screeds, hollow blocks, and gypsum boards. Tiling over existing tiles can also be done but after testing.

Typical areas of application include residential, public, and industrial structures, which are likely to be subjected to vibrations, extreme flexing, or deforming problems. It is recommended for use on external facades subjected to thermic or dimensional variations. It is particularly suitable to eliminate active or passive damp and moisture penetrations.

Features

BATIMIX Tile Adhesive WE-440 has the following characteristics:

• High-quality tiling work can be achieved in a clean and speedy manner
• Mixing the A and B components leads to a hydrophobic and easy troweling product with the consistently same fresh and hardened properties
• Large and heavy tiles can be laid on vertical surfaces with minimum slippage
• Extended open time and permanent waterproofing against active or passive water pressure
• Limited shrinkage and stronger layer bond between the substrate and tiles

Properties

• Appearance : Component A: powder - Component B: liquid
• Density : Component A: around 1.49 (bulk) - Component B: around 1.02
• Mix ratio, 100% by weight: Part A / Part B = 82 / 18
• Consistency of mix : very viscous
• Pot life : around 1.5 hours
• pH: 12.6
• Application temperature : from +5 to +35 ºC
• Coverage : 2 to 5 kg / m²
• Open time (EN 1346) : around 25 minutes
• Adjustability time : around 35 minutes
• Slip resistance (EN 1308) : excellent
• Wetting capability (EN 1347) : excellent
• Wall grouting : after 12 hours
• Floor grouting : after 24 hours
• Set to light foot traffic : after 24 hours
• Ready for use : after 14 days
• Adhesion strength at 28 days (EN 1348) initial : 1.5 MPa
• Adhesion strength at 28 days (EN 1348) after heat ageing : 1.1 MPa
• Adhesion strength at 28 days (EN 1348) after water immersion : 0.85 MPa
• Adhesion strength at 28 days (EN 1348) after freeze/thaw cycles : 1.05 MPa
• Temperature after final cure: from -10 to +60 ºC
• Resistance to oils and alkalis: very good

Health and Safety

BATIMIX Tile Adhesive WE-440 contains cement and liquid irritating to eyes and skin. In case of contact, rinse immediately with plenty of water. For further information, kindly refer to the Material Safety Data Sheet.

Directions for Use

Substrate preparation: The surface of the substrate must be cured, mechanically strong, and thoroughly cleaned from all dust, loose particles, oil, wax, etc. BATIMIX Tile Adhesive WE-440 works well on dry surfaces, but can also be applied on lightly dampened ones.

Mixing: Mix the entire A and B components of BATIMIX Tile Adhesive WE-440 with an electric mixer at a slow speed for a minimum of 3 minutes to get a uniform lump free consistency. Adding a small amount of clean water may be done in case a more workable and loose consistency is desired.

Application of the mix: Whenever waterproofing is required, BATIMIX Tile Adhesive WE-440 can be laid with an un-toothed trowel to a uniform thickness of 1 to 2 mm; and after hardening (24 hours), a second coat can be applied with a toothed trowel for bonding the tiles. For other tiling works, the product can be directly applied to the desired thickness using a toothed trowel.

Do not spread more than 1 m2 of BATIMIX Tile Adhesive WE-440 at a time. The mortar should be adjusted to the desired thickness using a notched trowel that will give coverage on the tiles back of at least 75% for indoor walls and floors subjected to light foot traffic or 90% for heavy traffic floors and outdoor applications.

Installing the tiles: There is no need to dampen the tiles prior to installation. Apply a firm pressure to ensure good contact with the adhesive. The open time is around 25 minutes at 23 ºC. However, highly absorbent substrate or unfavorable weather conditions (high temperature, drying wind, or strong sun) may shorten this open time quite drastically.

Constant checks should be conducted to determine if the mortar is still fresh to the touch and capable of providing good adhesion to the tiles. In case a surface dried skin has formed on top of the adhesive, it is advisable to re-trowel the mortar with a notched trowel which would help restoring the open time.

Grouting and protection: Wall joints between applied tiles can be grouted after 12 hours and floor joints after 24 hours with any appropriate grout similar to BATIMIX Tile Grout series. All tiling made with BATIMIX Tile Adhesive WE-440 must be protected from direct sun and washout for at least 5 to 7 days after application.

Specifications / Compliance with Standards

BATIMIX Tile Adhesive WE-440 is manufactured to comply with EN 12004 for Tile Adhesives of Class C2T: Improved Cementitious Adhesive with Additional Characteristics and Reduced Slip. This product also conforms to EN 12002 Type S1 for flexible adhesives.

Storage

BATIMIX Tile Adhesive WE-440 shelf life is six months from the production date if stored in a closed place.

Packages

• Two component product packed in a 20 kg paper bag and 4.5 kg plastic pail