Hip Roof Framing Calculator - With Rafter Angle Cutting Templates and Layout Plans - Imperial
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Join Detail
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Ply Sheathing Angle and Cut Set-back - Both sheet orientations ↔ ↕
Sheathing Hip Cut Calculator
1138.93 ft² = 35.6 Sheets +
waste = 40 Sheets
Sheets rounded up to next full sheet
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With a square roof, the ridge becomes a square center piece (kingpost) with side lengths equal to common rafter thickness.
To remove this center ridge piece, you can lengthen 2 (only) opposing common rafters by and butt their tops together in the center.
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For a good straight fascia, add an extra inch or 2 to the tails of all your rafters (total length).
After they're up, you can flick a line to mark and trim the tails in a nice straight line, to make up for any ridge warp or marking, cutting and fixing errors.
The 2 end Jack Rafters are slightly different length to commons because the Ridge and Rafter thickness are not the same.
If the Ridge and Rafter thickness are identical, the 2 end jack rafters are the same as commons.
Use rafter template for end jacks and adjust length and birds-mouth cut to suit.
Running Batten setout points up Commons: (from lower end of rafter up - to of each batten) Mark out + Speech
Running Batten setout points up Hip: (from lower end of hip center up - to of each batten) Mark out + Speech
Batten Lengths (long side of batten - to centre of hips)
Running measurements are - AND ON - from start point to near side of each rafter.
Click lists to format vertically.
Running Ridge: Mark out + Speech
Wall Length: Mark out + Speech
Wall Width: Mark out + Speech
Running Hip: Mark out + Speech
Running Hip points to near and far side of each creeper rafter.
Start hip run at top edge of hip side cut (after it's cut), not end point - See Hip Detail Below.
Check all spacings and squaring before fixing!
Roof Angle
Birdsmouth Deep!
If using a Circular Saw or Compound Miter saw, set saw bevel angle to 45° to obtain Creeper and Hip side angles.
With the saw bevel angle set to 45°, cutting hips and creepers at the plumb cut angle will produce correct side angles.
See Hip Cutting details blow and
Saw Miter and Blade Angle Settings
Lay Device on incline and hit
Start Measuring to directly measure Pitch.
Hit
Stop + Calculate to capture current Pitch Angle and calculate roof.
Hit
Speech to continuously speak measured angle.
Left click, release then drag to measure at scale in diagram below - Enlarge diagram scale for more accurate measurements.
Scale
To mark and cut hip plumb and side cuts with a circular saw -
Print a Paper Template (easy + accurate)
OR:
1: Mark the end plumb cut angle line
(
back from square) on both sides of the hip. This is the pointy end. (Don't cut yet)
2: Measure back
from this line and mark a second, parallel line on both sides of the hip. (This is the line to cut along)
3: Set circular saw blade tilt angle to
45°, cut 1 side along second line, with blade tilted toward pointy end, then flip and cut other side the same.
Print and cut full scale paper templates - fold over wood to mark and cut angles (easy)
Optimum Creeper Length?
From the optimum creeper length
you can cut 1st + last, 2nd + 2nd last, 3rd + 3rd last etc creepers.
Click
Email this Calculation to display a shortened URL containing the current calculator input values.
Click this link to send an Email, which once opened (on your tablet or phone?) will re-open this page with the saved calculator input and results.
You can also copy (save) and paste the shortened URL directly into the browser address bar to re-load the saved calculation results anytime.
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
What do we think? - They're 2 different things:
A
Meter is a device to measure things - like a Volt Meter or a Parking Meter
A
Metre is about 3'-3~3/8"
Although diameter and perimeter as measurements - don't seem to fit very well
If the US ever goes Metric, you'll be able to use a Meter to measure Meters - A Meter Meter
All Imperial inputs and dimensions are actual physical finished sizes (unless otherwise noted)
All Metric Inputs in Millimetres (unless otherwise noted)
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