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Stesso

Mark the Roof Pitch Angle

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2:36
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Cutting a birds mouth for a 2x4 top plate using a speed square! #diy #tools #home #construction

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What happens here

Place the speed square on the piece of wood representing the rafter. Locate the 'common' scale on the speed square, which indicates roof pitches. For this demonstration, the presenter uses a 4/12 roof pitch, so he aligns the '4' mark on the common scale with the edge of the rafter. Once aligned, use the carpenter's pencil to trace along the outside edge of the speed square to mark the first, angled line of the bird's mouth cut. This line represents the 'seat' of the rafter's connection to the wall plate.

Goal: Mark the correct roof pitch angle on the rafter.

Tools and materials

  • Carpenter's Pencil — Marking lines on the wood
  • Speed Square Milwaukee — Marking angles and pitches on the rafter
  • Wood — The material to be cut for the bird's mouth

What they say

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you're going to want to do is take your speed square and right here this common scale, this is going to show you the pitch of your roof. So we established a couple videos ago that my roof pitch on my garage is a 4 12. So you're going to bring this all the way up to where it says four, all right? And I'm doing this at a weird angle so you guys can hopefully see it. So you bring this up to where it's four and remember you trace the outside of your square here. And now you're going to have three diamonds on your square. You're going to have one, this one at an inch and a

Auto-generated from the video audio.