Roof Knife blades used to cut composition shingles

Roofers Knife Blades Roofers Knife (Used for blades with a square hole) Knife blades used when installing composition shingles (Cut shingles from the smooth back side) All blades last longer when cut from the back side of shingles   Bowtie Blade Used when shingle are cold, also used on thicker shingles that have granules on both sides Requires a roofers knife handle.(Notice the square hole in the blade) Hook Blade Used mainly when shingle are warm. Also comes with a square hole in the blade Utility Blade Not recommended for cutting shingles. Best for cutting roofing felts (tar paper) Tips   Warm shingles are easier to cut Shingle...