Is it acceptable practice to install pool tile mosaic without any thinset or mortar securing the mosaic tiles to the pool surface?? My pool contractor did this with a large turtle mosaic and now the tiles are falling out.
He tells me it is common practice to just secure tile mosaics with just the grout and plaster surrounding it - and no thinset/adhesive between the tiles and pool surface. I heard from someone that ANSI A188.8.131.52 discusses specific installation of ceramic tile mosaics in wet environments (pools, spas, showers), but I have not been able to find the exact text of the standard. Searches keep landing on product info. Can anyone copy-post or lead me to the relevant text?
Likely the pool will have to be drained and the entire 3' by 4' mosaic torn out and replaced (or leave a turtle shaped patch...?) That sounds like it could be expensive. IF the contractor was not following acceptable standards of tile installation, he needs to step up and fix this. Right now, he does not sound like he is ready to do that.
Can anyone provide insight as how to handle this. Any links to resources (such as ANSI, or local standards) would be fantastic. We live in California, Santa Clare County. Thanks, Kevin