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Old 12-17-2013, 03:26 PM   #1
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slanted roof at 5:12 pitch


Hello everyone I would like some pointers on doing a slanted roof at a 5:12 pitch over 900 sq. Ft home I am building. I am considering spray foam insulation which cancels the need for soffit but I am stuck on getting started. Any advice? I did manage to get all the ceiling joists done and i am in the process of doing wind bracing, but the roof is near...Thanks in Advance
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Old 12-17-2013, 05:24 PM   #2
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slanted roof at 5:12 pitch


I lightened your picture a little.
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Old 12-17-2013, 06:40 PM   #3
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Thank you Jim
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Old 12-17-2013, 07:09 PM   #4
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slanted roof at 5:12 pitch


Are you going to have some help with the roof? Looks like you have several other things to do before thinking about a roof. Do you know how to figure the length of rafters?
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Old 12-17-2013, 07:47 PM   #5
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slanted roof at 5:12 pitch


I have been watching videos on YouTube I am practicing on wood to make sure I have it done on the roof rafters. I would love any advice you have on roof rafter measuring
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Old 12-17-2013, 08:06 PM   #6
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slanted roof at 5:12 pitch


http://engineeringtraining.tpub.com/.../14069_211.htm
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Old 12-17-2013, 08:11 PM   #7
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A few more windows/doors would be nice also. Never heard of anyone starting a house frame with no idea how the roof would get completed. Are there permits here?
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Old 12-17-2013, 08:20 PM   #8
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House will have. 6 windows and 2 doors.. I live in the county so the only permit or inspection was septic. I do have knowledge of building roof in theory but since this is my first time actually doing it just thought I would seek advice
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Old 12-17-2013, 09:52 PM   #9
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slanted roof at 5:12 pitch


Looks like a good start for a house. I'd get a few sheets of sheathing on the corners, tho. When I was framing my addition, I really liked the book from Creative Homeowner, Ultimate Guide to House Framing. (Their matching Plumbing book is good, too.) The online roofing calculator Joe linked to in my doghouse roof thread a few weeks ago is pretty slick, too.
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Old 12-17-2013, 10:28 PM   #10
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slanted roof at 5:12 pitch


What exactly do you mean by "slanted roof"? All roofs are slanted (even "flat" ones!). Do you mean gable? That would be the easiest to build. Or are you thinking a hip roof? Forget about gambrel (barn style) unless your'e planning on building trusses.

You said "I am considering spray foam insulation which cancels the need for soffit." I'm not following you there.

The roof is the trickiest part of framing a house. I'm not sure how detailed those youtube videos are, but I recommend you do a good amount of reading before you start cutting rafters. John Carroll does a fantastic job at explaining roof framing. Rafter tables and calculators won't help you unless you truly understand the concepts, and Carroll has a gift for explaining things clearly and eloquently.

http://www.amazon.com/For-Pros-Measu.../dp/1561583359
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Old 12-17-2013, 11:19 PM   #11
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slanted roof at 5:12 pitch


At this point you really need to plumb and brace your walls, you would be surprised what a stiff wind will do to your framing. How did you string and plumb your front and rear walls without bracing? Are they straight? If your front and rear walls aren't straight and the same all the way down you will have problems with your rafters. The front and rear walls must be the same span exactly from one end to the other.
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Old 12-17-2013, 11:48 PM   #12
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I have been bracing the framework all day today. I am still a little nervous about notching the wood for the wind bracing. I took a minute because i was trying to find the Simpson strong tie bracing straps but after talking to a few contractors in my area. .. they convinced me that bracing with the 1x4 and notching and then 2x4 staggering the frame was the best way to go for our area... so I have been on a mission bracing the walls.. mire bracing under the flooring and I was told to go back and put bracing in the ceiling joists as well. So that is tomorrow's task. Definitely a new found respect for home builders.
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Old 12-17-2013, 11:51 PM   #13
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Cortell the roof I am going for is a skillion roof I have even heard it called a pole shed roof. I will get the book you recommended. Thank you
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Old 12-18-2013, 12:03 AM   #14
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Big Jim the walls are correct but i do have another question. I know you are in Tennessee and i am in southern Texas but maybe you have seen it too. I was watching a house being built in a master planned community and the guys were putting house wrap and then hardie planks, no plywood or osb. I asked and I was told that on that house the interior walls were going to be wood planked so there was no need for sheathing. .. I tried explore it further, but wouldn't that do something to the structure long term??? Just wondering
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Old 12-18-2013, 12:22 AM   #15
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slanted roof at 5:12 pitch


If I were building the house it would have sheathing on the outside. Even if it were built as you said they did, the corners and intervals must have plywood for bracing the walls so it would make sense to have the sheathing also. There is no way I would depend on materials applied to the inside walls for permanent bracing.

I never was a fan of the 1X4 let into the 2Xs for bracing a corner, I have see the wind lift a corner with a corner braced with the 1X4. I like the metal strapping and full sheet plywood over the straps nailed close.

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