24/12 roof pitch

63.43° angle

A 24/12 roof rises 24 in for every 12 in of run: a 200% slope with a 2.236 area multiplier.

Pitch24 in 12 (24:12)
Angle63.43°
Slope200%
Roof area multiplier2.2361
Rafter length per foot of run26.83 in
TypeA very steep roof

Roofing for a 24/12 pitch

Suitable for asphalt shingles, metal, tile and most other roofing with standard underlayment. Not walkable: roofers work from roof jacks and fall protection, which adds labor cost.

Rafter length at 24/12

Run (half the span)RiseRafter length (before overhang)
10 ft20 ft22.36 ft
12 ft24 ft26.83 ft
14 ft28 ft31.3 ft
16 ft32 ft35.78 ft

Change the numbers

Roof pitch

24/12

63.43° angle, 200% slope.

Pitch24 in 12
Angle63.43°
Slope200%
Roof area multiplier2.2361
Rafter length per foot of run26.83 in

Other roof pitches

Questions

What angle is a 24/12 roof pitch?
63.43 degrees.
What is a 24/12 roof pitch as a percentage?
200%: the roof rises 24 inches for every 12 inches of run.
What is the roof multiplier for a 24/12 pitch?
2.236. Multiply the roof’s flat footprint by 2.236 to get its actual surface area.
Is a 24/12 roof walkable?
Not walkable: roofers work from roof jacks and fall protection, which adds labor cost.

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