re-emulsify and lose their bond. I per- sonally have received a shipment of tile that had become damp at some point during the fabricating, mount- ing, packaging, shipping, storage and delivery process to such a degree that the mesh adhesive had lost most of its bond to the back of the tiles and the tiles themselves were mildewed. I rejected that entire shipment. When installing any type of mesh- mount mosaic, an installer should inspect each sheet for broken, loose or very inconsistently-spaced tiles. These should be cut off the mesh and individually placed or replaced. Depending on the size of the installa- tion, I always expect to repair at least several throughout the installation. Some types of mesh used for mounting are less rigid than others. Some mesh material used has thin- ner strands or larger spaces in the mesh fabric that make it flimsier. This makes it more difficult for the installer to achieve consistent spacing when setting individual sheets and through- out the installation. I hope this helps. For more spe- cific guidance, perhaps the Marble Institute of America would be willing to comment on your question. – Mark Heinlein, NTCA Technical Trainer /Presenter *Quoted from Marble Institute of America Q&A Manual (Expert Answers toTechnical QuestionsAbout Working with Natural Stone) www. stonesofnorthamerica.com/techni- cal/Expert_Answers_to_Technical_ Questions_about_Working_with_ Natural_Stone.pdf ASK THE EXPERTS –––––––––––––––––––––––––––––––––––––––––––––––––––– www.provaproducts.com PROVA® offers a complete assortment of quality ceramic tile accessories with innovative features that have simplified installation processes for all who use it. Since 2008, PROVA® has been providing professionals with a cost effective alternative they can rely on to get their jobs done right the first time! Contact your local distributor and ask for PROVA® products today! LOOKING FOR SIMPLE SOLUTIONS FOR ALL YOUR CERAMIC ACCESSORY NEEDS? WATERPROOFING SYSTEMS CERAMIC TRIMS & NOSING SHOWER DRAIN & PAN SYSTEMS UNDERLAYMENT SYSTEMS TOOLS & SEALANTS 24 TileLetter | April 2017