Professional S1 flexible tile and stone adhesive suitable for wall and floors. Specifically designed for use with all floor and wall tiles, including ceramic, porcelain and natural stone tiles, Suitable for use over wood and concrete sub floors. With the benefit of being a 1 part adhesive the flexibility is already added in so no additives are required. Only water is added to the mix to provide you with an all in one flexible high grab adhesive. This makes it easy to mix, easy to work with leaving you with a very versatile and a high quality all in one adhesive.