Protecting Substrates

Gubbi Civil Engineering finds that elastomeric coating exceeds all requirements for protecting surfaces.Elastomeric coating is a flexible protective coating based on a styrene-acrylic copolymer for exterior or interior use. Applied as a liquid, it forms a durable, protective, waterproof membrane and is a single component emulsion containing inert pigments and has a brushable consistency. The coating exceeds all the requirements for resisting carbonation and preventing chloride ion ingress.Primary usesElastomeric coating is suitable as a seamless and elastomeric waterproofing coating for timber, asbestos/ fibre cement and zinc sheets, asphalt, and built-up felt. Its main advantages include:Easily applied by roller, brush  Flexible and capable of bridging cracks Acts as a barrier against salts and atmospheric gases Masks imperfections in substrates Protects concrete from waterborne salts Is UV stable and maintains its appearance Surface preparationAll concrete surfaces are 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.PrimingThe surfaces are then primed with elastomeric coating primer applied at a rate of 100g/sq m, to eliminate excessive suction and promote adhesion. The primer is then allowed to dry before proceeding with the top coats. It is necessary to open the concrete pores prior to the application of the elastomeric coating primer.ApplicationAfter priming, one or two coats of the coating are applied to ensure a continuous, even film. The finish may be textured if desired. Successive coats are applied at right angles to each other.Weather conditionsIt is necessary to dry the film in order to make the elastomeric coating resistant to rain. This 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 has been forecast. Similarly, the coating can freeze in its wet state. Hence, it should not be applied to frozen substrates or when the temperature is below 5°C, otherwise it might fall in the process of application.(Communication by the management of the company)