New pool build question regarding glass tile

Mar 12, 2012
2
After two years of planning - construction is under way on our new pool. I have selected 2" x 4" glass tiles in a subway pattern for the waterline. I am getting really nervous about the installation. My pb has many years of experience but has not installed glass tile before. The installation recommendation from the manufacturer does not mention a water proof barrier that I have now seen mentioned a few times. They do recommend a few specific thin sets, unsanded grout, and a 21 day min cure before submersing. Anyone with experience that could help me out? How firm is the 21 day rule - my pb is not happy out this unexpected delay. Thank you in advance for your help
 
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