Roof accessories & ice-and-water

Drip edge, starter, cap, valley, IWS.

Everything on the roof edge that field-shingle math misses: drip edge, starter course, ridge/hip cap, valley liner, and the code-driven ice-and-water-shield takeoff from overhang, wall thickness, and pitch.

Inputs

Eaves (LF)

Rakes (LF)

Ridges (LF)

Hips (LF)

Valleys (LF)

Pitch

Soffit overhang (in)

Exterior wall thickness (in)

Waste (%)

IWS roll width (in)

Cap coverage per bundle (LF)

Some brands cover ~31 LF.

Result

Enter values above to calculate.

Takeoff guide — verify edge lengths from the sketch or aerial and the ice-barrier requirement against the local adopted code.