I tried this in a few places with mixed results. The problem is that the adhesive is VERY strong and if you let the adhesive "catch" the wall at all, it's hard to pull off. You need to be able to slide the tile into a tight spot WITHOUT it catching first. For the most part, I'd suggest just using trim. We did work out a method at the end though... I WOULD NOT recommend this in MOST situations. We had a really tight area with a weird curve of molding for a cabinet (in the laundry room above the sink). There was no way we could cut the curve with tin snips. Instead we used our JobPlus tool to cut away at the end of the trim, leaving a small area to stuff the edge of the tile into. We left the sticker on the part of the tile that was going under the trim. This prevented it from sticking as we inserted it. The sticker for the rest of the tile was removed to stick to the wall once the trim was inserted. I hope that makes sense! It's not the best method of doing this because you risk your tile not adhering properly and possibly popping up later. The other thing you could try is leaving the sticker on the back of the tile, sliding it behind the trim into the location you want, then trying to pull the sticker off while the tile is in place. This worked in a few spots for me, but it's tricky. The pictures below show two tricky spots where we managed to shove the edges behind the cabinet/trim. The first photo is before we cut away the trim. We cut just enough by the wall to slip the tile behind it.