Roofing Using Half Tab Method

For a racking or midroof pyramid layout method snap two vertical lines called bond lines near the center of the roof the appropriate distance apart.

Roofing using half tab method. This article discusses best roofing practices for the installation of asphalt roof shingles including installation temperature shingle sealing methods shingle course offsets asphalt shingle nailing location and specifications low slope and steep slope limits for asphalt shingles and roof flashing at building eaves and around skylights. It s better to use the factory edges of a half sheet of plywood as a guide. For example if you re roofing from left to right align the first shingle of the second course so the right side of the shingle. This 1 2 tab has to be cut off where it hangs off the left edge of the gable roof.

Mark the center of each section and use a compass to mark 30 degree angles along the sides of each. Three tab shingles are most typically installed with a half tab offset that yields the characteristic brickwork appearance. Check them with a framing square or measure so the lines are parallel with the rake ends. The simplest way to do this is to use the half tab offset method.