Method and apparatus for manufacturing and installing roof tiles

A method of laying tiles from a group of tiles including a subgroup of indicia-provided tiles all including similar cutting guide indicia, said method comprising the steps of:

• manufacturing said group of tiles such that each tile in said group of tiles has an upper surface imitating wood shakes and such that each tile in said subgroup further includes first, second and third cutting indicia marks thereon positioned in a recognizable predetermined pattern, said first, second and third cutting indicia marks appearing visually different from each other and being spaced at different distances from a side edge of each said tile in said subgroup, said second cutting indicia mark being at a greater distance from said side edge than said first cutting indicia mark, and said third cutting indicia mark being at a greater distance from said side edge than said first cutting indicia mark but at a lesser distance from said side edge than said second cutting indicia mark;
• laying a first cut tile from said subgroup of indicia-provided tiles after cutting it approximately along its first indicia to provide a first cut tile width;
• laying a first row of tiles from said group of tiles in side to side abutment relative to said first cut tile;
• laying a second cut tile from said subgroup of indicia-provided tiles after cutting it approximately along its second indicia to provide a second cut tile width greater than that of said first tile width;
• laying a second row of tiles from said group of tiles in side to side abutment relative to said second cut tile;
• laying a third cut tile from said subgroup of indicia-provided tiles after cutting it approximately along its third indicia to provide a third cut tile width greater than that of said first tile width and lesser than that of said second cut tile width;
• and
• laying a third row of tiles from said group of tiles in side to side abutment relative to said third cut tile.