Curing Render During Dry WeatherInformation on Curing Render During Dry WeatherDuring cool, dry weather, Rockcote often receives feedback that render can dry soft and powdery. Before concluding that something is wrong with the render, we would like to offer some information to our customers.To form concrete, 3 components are required: Cement + Sand + Water = ConcreteIt is a common misconception that water is used simply to mix the concrete and when it dries the concrete should be hard. In fact, water is required along with cement and sand to form concrete. During the mixing process, the addition of water causes a chemical reaction to occur. This is referred to as ‘hydration’. The rest of the water is then lost to the air via drying.The formation of concrete takes time.

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