We have a new shower installed last year, and without which this is so 'ne shower tray quite slippery. Mat we did not so we tried it with stickers. As described in the instructions, made the surface grease-free, label up pressed properly and for 24 hours at rest. Since the shower no longer slip when the sticker and keep with us as the first day. Say no contamination or separation phenomena at the edge. We have a black shower tray, in the absence of a pressure roller I simply abused our rolling pin. Advantage in the black cup is that you very well may very when the transparent sticker completely against, you have to think I work according attentive in a white cup.
