I have a deck attached to my house and now I would like to build a roof for shade and rain protection. I am trying to find a set of detail plans for probably a metal roof. Some people just have this kind of info in their head. Me, I need a set of plans.
I am going to set new 4x4's outside of the existing ones. I will be attaching the roof to a ledger board under the eave. I just can't get into my head how to frame the roof part with the rafters and all. I am really thinking that a metal roof would be easier than composite shingles with decking and all.
I don't think you will be happy with the rafters attaching to your house under the eave. You wouldn't have enough fall on the roof and the beam to hold up the outside end of your rafters would be way too low for you. Composite shingles would be totally out as you would for sure have less than a 4 and 12 pitch. (or is a 3 and 12 the lowest, old timers ya know)
You are going to have to run the new rafters on top of your house rafters to get the pitch you need to look good and for a good run off of water. That is one of the simplest roof to build. Your location and the size of your existing rafters will determine how heavy you will need to build the roof. If you live far north the rafters will need to be heavy for snow load. If the rafters on your house now are undersized you may have another problem as they may not hold the new roof with or without a snow load, provided there is one.
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