How To Lay Out and Build A Chimney Cricket

This is part 10 of 10 in a series of basic installation details of asphalt shingles.
1. IWS and Felt.
2. Drip Edge and Gutter Apron.
3. Starter Shingle Courses.
4. Field and Valley Shingles.
5. Step and Apron Flashing.
6. Pipe Boots and Metal Pipe Flashing.
7. Dead Valley and Chimney Pan.
8. Hip/Ridge Cap and Ridge Vent.
9. Skylight Flashing.
10. Building a Cricket.
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[@MarquisVonLion]

thanks man, you should see the one the roofer did on my house, it looks like he did it by eye , it's a patchwork of metal ( metal roof), I will try to have him redo it, hopefully !

[@themillennialroofer]

Best of luck!

[@yesman5525]

Is there a way to do all of the math on paper without having to physically trace the 2x4 spine? Subtract the measurement of the wood off of each side?

[@themillennialroofer]

Yes, that is my preferred method, but which requires more math.