Today, I visited a builder friend's house project and noticed he had used large (60x60) glazed, light and dark grey, swirl pattern, tiles for the pool. He claims the tiles are sold as "double-fired" for increased water resistance, but who really knows. At a resort I visited last year in Thailand, they used massive 60x120 green marble-look tiles in their pool.  I have a quote for Pebble Crete, which is fine, but I want to consider these larger pool tiles as an alternative. From internet reading, strong bathroom glazed floor tiles are approved for swimming pools. Has anyone here used 60x60 (or larger) tiles for their swimming pool and can offer some advice?

 

For those interested in using bathroom floor tiles, here is some information on the type to use...

"Bathroom ceramic tiles suitable for use in a swimming pool are rated floor-grade in toughness. Also, if a bathroom ceramic tile is used in a swimming pool, it has to have low water absorption ratings. Class 3 bathroom ceramic tile types are suitable for most floor-grade applications. Bathroom and swimming pool ceramic tile also has to be either vitreous (0.5 to 3 percent absorption) or impervious (0.5 percent or lower absorption) to moisture. If you want to ensure that the bathroom ceramic tile you use in your bathroom can go into your swimming pool use a glazed porcelain ceramic tile. Porcelain ceramic tiles are just another type of ceramic tile and are extremely durable and water resistant. All porcelain tiles are at least vitreous in terms of water absorption resistance. Glazed porcelain ceramic tiles stand up well to frost and cold temperatures found outdoors, too, though they tend to cost more."

Don't forget the R rating.