If you have a swimming pool on your property you'll find that laying tiles is a great improvement over a more standard pool lining material as well as improving its appearance.
You can make a lovely swimming environment by installing colorful tiles or using mosaic tiles to create creative patterns. It doesn't matter if you're tiling just the walls or the entire pool though, make sure you use specialized swimming pool tiles and waterproof grout to ensure you get proper, long-term coverage.
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First, drain your pool so the water level is below your installation line and at a level that you are happy to stand in. If you are tiling the entire pool or the pool floor, or just don't want to stand in water while you work, you can drain all the water entirely.
Clean the surface you are going to install your tiles on using warm water and ordinary dish soap. This ensures that all chemicals, dirt, and other contaminants are gone from the surface. Dry thoroughly with a towel or leave for a few hours to dry naturally.
Now spread cement paste over an area no larger than 4-5 square feet at a time. You can use a notched towel which will leave ridged in the paste so the tiles stick to it better. Make sure you are using tiles and grout which are approved for application in swimming pools, as not all products are guaranteed waterproof.
Now firmly push your pool tiles into place in the cemented area. The reason you work in small areas is so that the adhesive doesn't dry out before you can put the tiles onto it.
If you do end up with some dry patches, make sure you scrape off the old adhesive with the edge of your trowel before you apply a new layer, or you will get an uneven finish. If you want to keep a very uniform edge to your tiling, temporarily screw up a wooden board at the bottom of each tile row to use as a guide for sitting tiles at the same level.