How to clean your K-Rend render safely

render

A good render can transform a house. As well as smartening up tired brickwork, it can help keep exposed walls dry and warm. Through-coloured renders such as K-Rend, monocouche and silicone-based renders are sold as low-maintenance, but on damp, shaded or north-facing walls they can still turn green, black or grey within a few years. […]