Should I do a birdsmouth cut for low sloped (tiny house) shed roof?
We’re getting close to framing my roof for my tiny house on wheels. The roof is a low sloped 2:12 pitch. There will only be 3-6 inch eave/overhang.
Should I do a birdsmouth cut for this? What benefits does this provide? If not, what method do you recommend that I do and why?
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Yes, you need a shallow bird's mouth. These days, most builders also use a hurricane clip (Simpson clip) as well.
There are two benefits to including birds mouths.
- It increases the bearing area so the corner of the rafter doesn't crush under load.
- It provides a horizontal bearing surface so all loads are vertical. Witpout the horizontal surface you also would have loads trying to make the rafters slide off the roof.