Whats the difference between Premium and Standard Grade FireLite?
“Premium Grade” FireLite is polished on both surfaces so that it is very nearly distortion free. It is the industry leader for quality and is unmatched by alternative products or production methods. “Standard Grade” FireLite may have slight surface imperfections, which may become more apparent in larger sheet sizes. FireLite Standard Grade is comparable to alternative fire-rated ceramics that are marketed as having a “Premium” finish, which some may liken to “antique” glass. For applications where such imperfections could be a concern, we strongly recommend obtaining samples prior to specification. What causes the imperfections? Ceramic is manufactured in the manner all glass was made prior to the invention of the “float” method. Instead of the glass being “floated” on hot tin, it is drawn out between rollers. The rollers leave a slight surface distortion on the glass. The polishing process requires grinding the surfaces to a smooth finish. TGP is the only source in North America offer
