There are many different types of adhesives out there to help and assist you with all sorts of things, so choosing a bag may not be that easy. At Home Tiles we sell two types of adhesives, our hose and our S1 hose. The main difference between the two is that the S1 is malleable so it can handle movement better like a powerful spin washer. Flexible tile adhesive is essential for any type of underfloor heating as continuous heating and cooling will wear away the inflexible adhesive and can loosen your tiles.