Peel-and-stick (PS) uncoupling membranes have hit the market and are gaining popularity among homeowners and installers. This is the new mess-free way to install uncoupling under tile, since there is no thin-set mortar required to install these membranes to the plywood, OSB, gypsum or concrete substrates – no mess, no stress. These membranes feature a pressure-sensitive adhesive (PSA) backing, which is a type of adhesive that allows the membranes to be repositioned during installation but gains strength each time pressure is applied to it during and after installation. Like the thin-set mortar versions, the peel-and-stick uncoupling membranes are generally intended for clean, dry, interior installations. Although these membranes have many positive attributes, there are still some skeptics in the tile industry who question their ability to perform as well as the thin-set versions. Hopefully, this article will help clear up some of the lingering suspicions and allow installers to make their own determinations based on the factors provided within.