ROCKCOTE Sandcote HYDRATECH is a new generation Sandcote with water repellency embedded into the chemical composition of the coating, delivering a hydrophobic system. It is an attractive and natural coloured render that uses the inherent beauty of mineral sands and aggregates to produce a natural, but stylishly modern texture finish. Sandcote HYDRATECH has been designed as a coloured render that delivers water repellency, without the need to overcoat with ROCKCOTE Repel.