Coating Technology

Elastomeric coating is designed to waterproof exterior masonry substrates.Elastomeric coating is a flexible, protective coating that is based on styrene-acrylic copolymer and applicable for exterior or interior use. Applied as a liquid, it cures to form a durable, protective, waterproof membrane. It is a single component emulsion containing inert pigments and has a brushable consistency. This coating exceeds all the requirements of a coating that resists carbonation and prevents chloride ion ingress.Uses and advantagesElastomeric coating is designed for the protection of concrete structures against carbonation and chloride ingress. The product is also suitable as a seamless and elastomeric waterproofing coating for timber, asbestos/fibre cement and zinc sheets, asphalt, built-up felt.The coating can easily be applied by a roller or brush; it is flexible and capable of bridging cracks; it is protective and acts as a barrier against salts and atmospheric gases. The material's high-build facilitates the masking of imperfections in substrates; its waterproof quality protects concrete from waterborne salts and that it is UV stable helps maintains its appearance.Pre-use preparationAll concrete surfaces should be treated to achieve a sound, clean surface free from laitance, oil, grease, mould release agents, residual curing compounds, dust or other contaminants that could impair adhesion. The surfaces should be primed with elastomeric coating primer applied at a rate of 100 g/sq m to eliminate excessive suction and promote adhesion. The primer must be allowed to dry before the top coats are applied. In the case where the primer is used for chloride iron or carbonation protection, it should be used as the priming system.It is necessary to open the concrete pores prior to application. In application, it is important to apply one or more coats to ensure an continuous, even film. The finish may be textured if desired. Successive coats should be applied at right angles to each other.Weather conditionsElastomeric coating is not resistant to rain until the film has dried. Once applied, the coat may take less than 30 minutes in hot, dry climates and up to 24 hours in temperate, humid conditions. Generally, the product should not be applied in rain or if rain is forecast. Similarly, the coating will freeze in its wet state; hence, it should not be applied to frozen substrates or when the temperature is below 5°C or is likely to fall during application.(Communication by the management of the company)