weber.cembrushcoat  

weber.cem brushcoat is a two component, SBR Latex modified, flexible cementitious coating for brush, spray or roller application. It is formulated as a protective, levelling coating to cover non-structural surface defects in new and old concrete.

• Can be applied easily by spray, by brush or by roller
• Easy to finish
• Deformable
• Resists dimensional changes in the substrate
• Durable
• Waterproof
• Does not crack or craze when applied and cured
• Permeable to water vapour
• Non-flammable

Suitable for use on plain and reinforced concrete, or dense rendered substrates subject to positive water pressure only.

Not suitable for trafficked areas.

All substrates must be sound, free of any contamination including laitance, paints, coatings, oil, grease and dust.

Concrete surfaces must be adequately prepared by grit blasting, high pressure water jetting, needle gunning or other appropriate means.

Old concrete surfaces contaminated with oil or grease require suitable preparation. New concrete must be fully cured for at least 14 days. Do not use a permanent curing membrane.

Defects such as honeycombing, leaks, pinholes, cracks and particular items such as sealing joints, sealing pipes through walls and concrete patch repairs should be treated as recommended in the Specification prior to the application of weber.cem brushcoat.

Pores and small cavities in concrete surfaces should be raked out where the mortar is loose, saturated with water and filled flush with weber.cem fairing coat.

Thoroughly dampen the area with clean water before applying weber.cem brushcoat but ensure all surface water is removed.

Pour all the contents of the liquid component into the pail supplied. Add all the powder component slowly while mixing using a paddle and a slow-speed drill at a speed not exceeding 500rpm for 3 minutes to a smooth and homogenous consistency.

Do not add extra water.

For larger volumes, use a Putzmeister P11 or similar machine. Machine mix the mortar for at least 5 minutes.

Hand application
Use a stiff bristle brush or roller to apply a first coat of weber.cem brushcoat over the surface at a minimum rate of 2 kg/m2, spreading out evenly and ensuring full overlap between applications. Leave to dry.

Apply the second coat at a rate of 1·5 to 2 kg/m2 at right angles to the first coat to ensure a pinhole-free coating. The second coat should be applied after about 6 to 12 hours but not later than 24 hours (at 20°C).

Machine application
Use a Putzmeister P11, Spray Boy TS3 with 8 mm nozzle or similar machine. Apply the mixed weber.cem brushcoat by spray pump to the required thickness (max 2 mm in one pass). Apply the second layer after 6 to 12 hours or as soon as the first layer is firm enough to support it.

Application conditions
Temperature range of application: +5°C to +35°C, and protected from direct sunlight. Do not apply on frozen surfaces or when frost is expected within 24 hours. Do not apply in direct sunlight or on hot substrates.
When applying in confined or close spaces, ensure sufficient ventilation to prevent condensation.

Finishing
Leave with an 'as sprayed' or a brushed finish or finish off with a damp sponge or a float for a smooth surface.

EU limit for weber.cem brushcoat (cat A/j):

140 g/l (2007)/140 g/l (2010). weber.cem brushcoat contains <5 g/l VOC.

Clean tools with water before weber.cem brushcoat has set.

Using 15 kg of Component A with 5 litres of Component B produces a yield of 10·8 litres, sufficient to cover 10 m2 per 1 mm coat. Normally two coats are sufficient.

When stored unopened in a dry place at temperatures above 5°C, shelf life is 6 months from date of manufacture.

Contains cement (Contains chromium (VI).
May produce an allergic reaction). Harmful by inhalation. Irritating to eyes and skin.
Keep out of the reach of children. In case of contact with eyes, rinse immediately with plenty of water and seek medical help. After contact with skin, wash immediately with plenty of soap and water.
Wear suitable protective clothing, gloves and eye/face protection.

For further information, please request the Material Safety Data Sheet for this product.

weber's Customer Services Department has a team of experienced advisors available to provide on-site advice both at the specification stage and during application. Detailed specifications can be provided for specific projects or more general works. Site visits and on-site demonstrations can be arranged on request.

Technical helpline
Tel: (01525) 722110
Fax: (01525) 718988

weber products are distributed throughout the UK through selected stockists and distributors. For UK sales enquiries and overseas projects, contact Weber's Sales office.

Sales office
Tel: (01525) 722100
Fax: (01525) 718988