A two part acrylic polymer modified flexible cementitious waterproof coating supplied in kits ready to use for the protection of concrete and mortar. Contite WS2 provides excellent adhesion, flexibility, and durability.

USES & ADVANTAGES

Contite WS2 is suitable for many waterproofing applications including for sealing swimming pools, balconies, bathrooms, wet areas, basements and as a low cost roof waterproofing system in damp conditions where other systems cannot be used. In roofing applications Elastodeck acrylic roof coating may be applied over Contite WS2 in a minimum of 2 coats to provide an aesthetically pleasing appearance.
Advantages include:
• Crack bridging & sealing.
• Non toxic.
• Excellent adhesion.
• Protection against carbonation and chlorides.
• Unlike conventional coatings that require the concrete to cure for 7 - 28 days it can be applied to 24 hours old concrete.
• Excellent elongation and flexibility.
• Increased frost & salt resistance.
• Easy to apply.
• Minimum surface preparation needed.
• Excellent for damp-proofing basements below ground.
• Breathable - allows transmission of water vapour from interior of building.

Appearance:Grey & special colours on request

Density: A + B (mixed) Approx. 1.8 kg/l.

Pot life: 30 minutes at 30 C. Pot life will be shortened at higher temperatures.

Coverage: Approx. 0.9 kg/m2/coat at 0.5 mm

thickness, apply 2 coats

Mixing Ratio: A : B = 1 : 4 by weight.

Elongation: Greater than 40% (unbonded).

Compressive

Strength: 23-25 N/mm ASTM C-190

Tensile Strength: 4-5 N/mm ASTM C-190

Flexural Strength: 10-12 N/mm ASTM C-348

Abrasion Resistance:1.0-1.3% weight loss ASTM C-241

Adhesion to Concrete: 1.0 -1.5 N/mm

Water Absorption: <2% ASTM C-140

Water Vapour Transmission

Rate 6 mm Thick: 3.7 perms ASTM E-96

Application Temperature: Not less th

Toxicity: Non toxic

SUBSTRATE PREPARATION
The substrate should be clean and sound, free of dust loose particles, grease, oil, primers from previous membrane systems or bitumen. Bitumen or primers should be removed by shotblasting or mechanical means, alternatively seal with a Cormix Sealer. Bond tests should be undertakenSealer if the surface is already saturated with bitumen or bitumen primers. Spalled concrete should be repaired by cutting out to sound concrete and patching with Conpatch 600 (consult Cormix International Technical Department).

MIXING
Contite WS2 is supplied in premeasured units. Slowly add the powder to the liquid and mix to a lump free smooth consistency. Do not add water or rework a stiffened mix by adding water. Mix sufficient material to use within 30-40 minutes.

APPLICATION
Saturate the concrete’s surface with clean water. Apply the first coat while the surface is still damp but no free standing water. Apply using a short stiff bristle brush or roller at a minimum of 0.5-1.0 mm per coat. Leave to dry for 2-6 hours. The second coat can be rubbed down with a soft dry sponge. Spray or trowel application is acceptable providing the mixing ratio is adjusted to achieve the right consistency. On hot surfaces e.g. above 40OC surface temperature a primer coat of mixed Contite WS2 and water with a slurry consistency should be applied. Consideration to saturating the surface in advance and protection from adverse wind & sun conditons must be given in exposed areas. The Contite WS2 must be applied over the primer coat before it dries. For light foot traffic areas the coating should be at least 2 mm thick. For advise contact Cormix Technical Service Department.

Contite WS2 is non-toxic but is alkaline in its nature. When applying gloves & goggles should be worn. Wash off splashes to skin with water. If in eyes wash out with plenty of clean water and seek medical attention. Contite WS2 is non-flammable.