MusselBound is a white, double-sided adhesive mat that replaces messy and difficult to use mortar with peel & stick simplicity, according to the company. This product is designed to be gently positioned on the wall and if needed, removed and repositioned. Pressing firmly on the adhesive mat activates its strong bond. MusselBound can be used with flat-backed glass, stone, porcelain, ceramic or metal tiles, as well as, mesh-backed mosaics.

Musslebound.com