Quick & easy to install|No need for ply, lay straight over sound floorboards|Stops cracks in grout & tiles caused by floor surface movement|Ideal for use with underfloor heating|You can start tiling immediately|No drying or waiting time|Suitable for use on newly laid concrete, timber & floorboards|Matting is designed with wide clover leaves for maximum contact with the floor below|Nylon mesh top layer provides perfect adhesion to the tile