Capture a Gable Angle With Your Tape, Then Reuse the Offcut as the Template

The Problem

Siding a gable end means every course terminates in the same roof-pitch angle, and the textbook routes — pitch math, or a bevel gauge you have to keep re-checking — are slower than the job deserves. What you want is the angle captured once, physically, off the wall itself.

The Technique

This crew pulls the angle straight off the gable with nothing but a tape:

1. Slide the square-cut siding piece up into the gable until its corner touches the raked roofline.
2. Measure the offset the rake creates along the piece — take the measurement at the bottom edge.
3. Transfer that same measurement onto the top edge of the piece.
4. Connect the transferred mark back to the corner where the piece touches the rake, and you've drawn the roof pitch across the board.
5. Cut the line — and keep the offcut. Its cut edge is the pitch angle, so from here on you lay the offcut on each new piece and trace, no more measuring.

The first piece costs one measurement; every piece after costs a pencil swipe.