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I want to attach a patio cover to my house. Trouble is the clearance between the window and the roof rafters is too small for a ledger. I was considering the option of attaching to the roof top like this:

x

x

Is it ok to attach to the rafters like this to support and distribute the load?

If so, any reinforcement required to the roof skeleton?

Patio size would be ~25x12ft.

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up vote 1 down vote accepted

What you have pictured is a typical hip detail. As long as you use proper sized lumber for the span and center dimensions it looks fine. The only thing I see is a lack of metal rafter hangers, bird's mouths and collar ties over the open span. Collar ties are not absolutely necessary if a cathedral design is wanted. basically, it looks OK. Check your local codes in case they have special requirements in hurricane prone or heavy snow load areas.

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