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Skillion Lean-to Roof Framing Calculator - With Running Setout Points - Metric


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From outside of wall to outside of wall (long side)
Wall Length
Rafter Thickness
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From outside of wall to outside of wall (short side)
Wall Width
Rafter Depth
Wall Thick Rafter Spacing
Wall Height Lower
Roof Angle

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Spacing adjusted to fit evenly

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Spacing as entered - end spaces adjusted to fit if necessary

Rafter Overhang Lower End Rafters Set-in
Rafter Overhang Upper Birdsmouth Seat
? Birdsmouth Seat Cut


Scale
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Creates a link to save or share current calculation
Share this Calculation
Possible Alternate Equal Rafter Centres

Skillion roof framing calculator plan diagram with full dimensions


Running Rafters:
Mark-out
Angle

Birds-Mouth

Skillion roof rafter detail diagram with all dimensions and birds mouths

Scale
Skillion Lean-to roof profile diagram




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Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks
And if you're cutting wet, wear a mask - theres dust in the spray mist too!

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