I have a 19’9”D x 16’ 10” W patio that I want to cover with a lean to roof attached at the house. (See pic). My main two questions are, one should I bore holes into my existing pad for the 6x6 posts or set them just outside of the pad? Secondly, as far as height of the roof goes, do you think I should go all the up to the gutter which is around 11’ and then my pitch would be pretty dramatic being around 7’or 8’ at the beam side or should I start the roof lower with more house and siding showing and this way it’s much less of a pitch. I just feel like too much pitch will be odd looking. This is my first lean to roof that i’m building so any info would be appreciated. Also, I’m using (3) 6x6 posts, not sure about the beam yet and 2x10x24s for the rafters and asphalt roof. Snow accumulation is nominal in my area so I think that should be ok. Window is being removed as well. Thanks!!
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
lean to patio roof.
- Thread starter ponz1979
- Start date
rancherbill
Well-known member
You are asking a lot of questions that really require to know where you are located.
-You need to have all your post in the ground. A wind will take your lean-to away
-Snow load specs for your area are important. You can go for years and then get a big dump. Here on Monday they were forecasting up to 18" and today they are forecasting rain. Eighteen inches of snow is very heavy and will destroy a lean-to built for rain.
-You need to have all your post in the ground. A wind will take your lean-to away
-Snow load specs for your area are important. You can go for years and then get a big dump. Here on Monday they were forecasting up to 18" and today they are forecasting rain. Eighteen inches of snow is very heavy and will destroy a lean-to built for rain.
Hi Bill,You are asking a lot of questions that really require to know where you are located.
-You need to have all your post in the ground. A wind will take your lean-to away
-Snow load specs for your area are important. You can go for years and then get a big dump. Here on Monday they were forecasting up to 18" and today they are forecasting rain. Eighteen inches of snow is very heavy and will destroy a lean-to built for rain.
I’m in Southern NJ. As far as the posts go I’m going to put them in the ground either way with footings at atleast 36” due to code in my area. I was just curious if anybody thought I should bore holes into the existing concrete for the footings or just outside of the pad. Thanks
Mike65
Well-known member
To make it easier I would put the posts in the ground. Where you are at in southern NJ do you have dirt or sand? When we lived in southern NJ (west side of Toms River) we had all sand. If that window is coming out I would not go all the way to the gutter, I would go up high enough so you are comfortable to walk under it & have room for an outdoor fan if you decide to install one.
dcg9381
Well-known member
You can install a steel plate in the existing concrete (I use 1/4") and bolt it in to the concrete. Lots of ways to attach wood to a steel plate, but you want to elevate the wood posts off the plate just a bit. Way easier than boring through concrete. Less ground / water contact too if you do it right.Hi Bill,
I was just curious if anybody thought I should bore holes into the existing concrete for the footings or just outside of the pad. Thanks
Last edited:
billconner
Well-known member
I don't think patio roof should be steeper than house, and preferably a little less.
Technically (by code) if it's attached to house the footings for the posts should also be below frost depth. I have a similar conditioning - and a lot more cold and snow - and building official was fine with post anchors on patio. Would depend some on soil and drainage under and around slab.
If you want posts on slab, you might look into helical piers. Otherwise I'd probably try to keep them off the slab.
Technically (by code) if it's attached to house the footings for the posts should also be below frost depth. I have a similar conditioning - and a lot more cold and snow - and building official was fine with post anchors on patio. Would depend some on soil and drainage under and around slab.
If you want posts on slab, you might look into helical piers. Otherwise I'd probably try to keep them off the slab.
Thanks for the advise Mike. We have about 2 feet of dirt and then you hit Marl unfortunately.To make it easier I would put the posts in the ground. Where you are at in southern NJ do you have dirt or sand? When we lived in southern NJ (west side of Toms River) we had all sand. If that window is coming out I would not go all the way to the gutter, I would go up high enough so you are comfortable to walk under it & have room for an outdoor fan if you decide to install one.
Thanks for the advice Bill! Yeah you’re right about the roof, it probably would look goofy with close to the same pitch. Yeah probably easier to keep them off the slab, my twp is pretty strict with code anyway I’m sure they would find something wrong with the existing pad.I don't think patio roof should be steeper than house, and preferably a little less.
Technically (by code) if it's attached to house the footings for the posts should also be below frost depth. I have a similar conditioning - and a lot more cold and snow - and building official was fine with post anchors on patio. Would depend some on soil and drainage under and around slab.
If you want posts on slab, you might look into helical piers. Otherwise I'd probably try to keep them off the slab.
billconner
Well-known member
You find lots of examples of lower slope on lower roofs. I can't find it on line but one diagram shows various roof pitches extended and all meeting at horizon. It is a pleasing proportion. Of course preferable for patio to not be less than 4:12 if composite shingles.