How To Connect A Patio Roof To A Valley Roof

Tie a new gable or hip roof to an existing gable or hip roof with valley rafters which perform the same function as ledgers.

How to connect a patio roof to a valley roof. If you are going to use shingles to cover the patio roof do not forget to install black roofing felt along with a single layer of oriented strand board. Once the patio roof is installed perfectly you will be able to furnish it so that you can get your ultimate comfort. You could cut the new ridge board into the existing roof and tie it into the house rafters or trusses but i am not sure that is necessary. I am no framer.

Strip the roofing from the old roof at the connection point to expose. To keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge. I said all of that to say this. Then nail shingles on the new roof and exposed areas of the old roof.

Locating and mounting the ledger is normally a fairly easy process. After installing the rafters we still had to extend the porch roof back over the shed roof creating a valley on either side. Those 2x s create the bottom of your new valley and your jack rafters on the porch roof will extend from that up to your new ridge board. Fold new shingles over the new valley onto the old roof overlapping by at least a foot.

Finish the new roof by nailing on osb sheathing covering it with roofing paper and nailing in metal flashing along the valleys and metal drip edge at the eaves. The ledger typically a 2 by 6 is usually designed to hold one end of the patio roof rafters.