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Replies to an inquiry about the possible causes and proposed solutions for 10- to 20-millimeter thin cracks that occurs on the outside edges of fired roofing tile. Changes in raw materials from time to time; Additives as a cause of related problems; Different areas of processing that need particular care; Drying of handmade tiles; Air movement in either the final dryer or the kiln.

Looks at Ludowici Roof Tile Company production of clay roof tiles with moisture absorption of less than one percent per tile. Breaking strength that tiles exceeds; Tiles resistance to frost action; Type of climate that tiles are suitable for; Warranty on roof tiles; Reasons for company's success.

Announces the availability of Monier Lifetile's Monier 2000 line of concrete roof tiles featuring 48 new tile colors in March 1998. Plans for updating the roof tiles' colors; Profiles of available tiles.