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Common Rafter Calculator - Rafter Dimensions - Plumb Cuts - Birds-mouth Dimensions and Cutting Templates - Metric

Rafter Run to Outer Wall
Roof Angle
Overhang (level)
Rafter Depth
Rafter Thick

Wall Thick
Wall Height
Allow for ridge thickness Allow for Ridge Thickness when determining Rafter Run to Outer Wall.

eg: Half building width minus 1/2 ridge thickness. See Rafter Run to Outer Wall Calculator below.

Print full scale Rafter Plumb Cut Templates and Birdsmouth Templates
Fold template over rafter to mark or cut through.

Angle Overhang

Rafter calculator angle dimension diagram
scale Use 〈 and 〉 Keyboard Keys to scale Birds-mouth. Birds-mouth

Rafter calculator dimension diagram

Open page with full scale printable birds-mouth cutting template at current rafter angle and dimensions.



Remember Ridge Thickness Remember to allow for Ridge Thickness in Rafter Run to Outer Wall.

Scale
Rafter Full Scale Profile Diagram

Calculate Rafter Run
to Outer Wall

Building Width
Ridge Thick
Rafter calculator ridge thickness adjustment diagram





DON'T BREATH THE DUST If you're cutting blocks, concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
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 too!

How should we spell it?



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