Easy Do It Yourself Step 1-You should thoroughly clean and dry your wall. Step 2-Overlap the tiles and grout lines, peel off the backing, and stick side by side for a seamless appearance. Step 3-Press firmly after confirming the place. Kindly Remind Tiles should not directly contact with flames, steam, or submerge in water. Do not install tiles less than 16 inches away from the top of the stove. Rough surfaces such as porous wood, embossed ceramic tiles, or textured wallpaper are unsuitable for installing. For the latex / repainted wall, the 3M Spray Adhesive is recommended. The curing period is 2 days after installing them on your wall (21 days for the freshly painted walls). The newly arrived peel and stick wall tiles may have alittle gel smell. The smell will dispel in 2-3 days. If you want to remove the tile, you could use a hairdryer to warm up the adhesive and pull softly, starting with the corners.Then use a cleaning product to remove the excess glue left by the tiles.