b'ASK THE EXPERTSstrate. As your question suggests,will be comfortable with install-it would likely not be an easy oring and selling to the owner as a simple task to remove the bandfunctional system that will stand of the quartzite, patch or installthe test of time.thewaterproofingmembraneI suggest you determine the best thatmayormaynotbebehindmethodandsystemapproach it,andreplacethemembranethatyouarecomfortablewith, andthequartziteandthepanand then discuss with the owner with a new tile system that youthereasonswhyitmakesmuch more sense to demo, replace and upgrade the entire shower.Ilookforwardtohearingback from you so I can help guide you on the best way to continue.Mark Heinlein, NTCA Training Director26TileLetter | August 2019'