🏠

ROOF

“How long do I cut my rafters?”

rafter pitch 6/12 rise building width — 24 ft

The orange line is the rafter. Roofish works out its exact cut length — no trig, no tables, no guessing.

How it works

Three numbers in, your whole cut list out.

1

Measure the building

How wide it is, how long it is — tape-measure numbers, feet and inches.

2

Set the pitch

How steep the roof is. Slide it and watch the drawing change shape until it looks like yours.

3

Read the answer

Cut length in big print, the stock length to buy, and the covering to order — done.

You tell it

A real example

A 24 ft wide building, 6/12 pitch, 30 ft long:

CUTevery rafter at 14 ft 5⁹⁄₁₆ in
BUY16 ft boards — 46 of them (23 per side)
COVER10 squares of roofing — 30 bundles of shingles, or 31 sheets of plywood underneath
Free to download — 3 free days, then $17.99 once

← All five jobs · Next: Stairs →