Cutting composition shingles using an electric saw

Roof Cutting Composition Shingles Cutting old composition shingles using an electric saw Put an old saw blade in the saw with the blade teeth pointing backwards Tips: Using a new blade will ruin the blade Best done when shingles are cool Set the blades depth as to not cut into the sheathing If saw slows or bogs down run the saw a while not cutting anything If saw gets too hot stop and put it in the shade or cover it from sunlight Knife blades used to cut composition shingles here.. Shingles cut with electric saw  ...