WE had to mount a 50" Pioneer above a glass tile fireplace. THe tiles wer 280 bucks per 6" square. I had the GC drill the holes. Then had a metal fabrication shop make me 10 gauge metal spacers. Screwed through the spacers and into OSB and the Studs. We also used this glue stuff from the GC to provide a buffer between the spacers and the tiles. After a year, the house shifteed and several tiles broke anyway. The GC, Design Firm, and Home Builder are in one hell of a lawsuit. Apparently it was not the proper grout/glue combination holding the tiels to the OSB. At least it wasn't my fault.
