frit

frit is powdered glass used to create the surface glaze on ceramic tile.

References - frit

See the following for additional frit information:

The Home Decorator's Tile Bible: A Complete Guide to Using and Choosing Tiles Firefly Books, February 2008, Morwenna Brett, ISBN 1554073642
Tile Style: Creating Beautiful Kitchens, Baths, and Interiors with Tile Stewart, Tabori and Chang, January 2006, Heather Adams, ISBN 158479450X
Stone: Designing Kitchens, Baths and Interiors with Natural Stone Stewart, Tabori and Chang, October 2003, Heather Adams, ISBN 1584792906
What Your Contractor Can't Tell You: The Essential Guide to Building and Renovating Shube Publishing, January 2008, Amy Johnston, ISBN 979983800
Renovation: Completely Revised and Updated R.S. Means Company; 2 edition, August 2002, Donald Reynolds and RS Means , ISBN 876296584