Extending Garage for Addition

[MadeByMiller]

I'm brainstorming a 14'x26' addition for my garage/carport/shop. In the drawing, the addition is the rear section with the taller roof line. I thought this would be as simple as buying trusses with the same pitch and heel height as my existing ones, but it seems it isn't that straightforward. I'm reading that trying to match an existing roof line is tricky because the pitch of the new trusses may not quite match the existing ones. Aesthetically, I really like the look of a seamless transition to the addition. Does anyone have any experience doing something similar?

 

[Lynden]

Have you considered using traditional framing for the roof of the addition -- rafters, a ridge beam and ceiling joists?

 

[ddawg16]

I agree with Lynden.....a ridge beam would have a lot of advantages.

At 14', the ridge beam would not have to be that big. Off the top of my head, a 4x12 PSL beam would be more than enough strength.

The big advantage....you would have a ton of space in the attic. Depending on the height, you could actually put a room up there.

 

[MadeByMiller]

Do you guys know of any good references that would help me determine what materials and dimensions I would need to frame the roof in traditionally with the rafters and ridge beam? I hadn't really considered it because I thought trusses would be much faster and easier. The roof would have a 26' span with 12" overhangs and it will be 14' long with a 4:12 pitch to match the existing roof. If I do use the "attic" area for storage, won't that be a factor in what size materials I use since there will be an additional load?

 

[Lynden]

I think the main advantage of trusses over stick framing is labor cost. If you are planning to do the framing of the addition yourself, any differences in time and cost would probably not be that great because the addition is relatively small and a gable roof is very easy to frame. I suggest you talk to an architect or building designer about framing lumber sizes, or talk to the plan checker at your local building department.

There is a lot of information on the web about stick framing a gable roof.

https://www.google.com/search?client=safari&rls=en&q=stick+framing+a+garage+roof&ie=UTF-8&oe=UTF-8

https://www.google.com/search?clien.......1..gws-wiz.......0i71j0i13i30.6s4zHhOBN_Q

I like Larry Haun's books and videos.

https://www.youtube.com/results?search_query=larry+haun+roof+framing

https://www.youtube.com/results?search_query=larry+haun

https://www.amazon.com/dp/B00ZVNY2G4/?tag=atomicindus08-20

 

[Homerr]

Do you guys know of any good references that would help me determine what materials and dimensions I would need to frame the roof in traditionally with the rafters and ridge beam? I hadn't really considered it because I thought trusses would be much faster and easier. The roof would have a 26' span with 12" overhangs and it will be 14' long with a 4:12 pitch to match the existing roof. If I do use the "attic" area for storage, won't that be a factor in what size materials I use since there will be an additional load?

Ask at your local lumber yard (not Lowes/HD, a real lumber yard) if they can size a ridge beam for you. Often lumber yards have someone well versed with Weyerhauser's Forte or Boise Cascade's BC Calc programs (or similar others) and can size it for you if you buy from them.

 

[MadeByMiller]

I think the main advantage of trusses over stick framing is labor cost. If you are planning to do the framing of the addition yourself, any differences in time and cost would probably not be that great because the addition is relatively small and a gable roof is very easy to frame. I suggest you talk to an architect or building designer about framing lumber sizes, or talk to the plan checker at your local building department.

There is a lot of information on the web about stick framing a gable roof.

https://www.google.com/search?client=safari&rls=en&q=stick+framing+a+garage+roof&ie=UTF-8&oe=UTF-8

https://www.google.com/search?clien.......1..gws-wiz.......0i71j0i13i30.6s4zHhOBN_Q

I like Larry Haun's books and videos.

https://www.youtube.com/results?search_query=larry+haun+roof+framing

https://www.youtube.com/results?search_query=larry+haun

https://www.amazon.com/dp/B00ZVNY2G4/?tag=atomicindus08-20

Wow, thank you very much for all of the links!

Ask at your local lumber yard (not Lowes/HD, a real lumber yard) if they can size a ridge beam for you. Often lumber yards have someone well versed with Weyerhauser's Forte or Boise Cascade's BC Calc programs (or similar others) and can size it for you if you buy from them.

I will do that, thank you!

 

[Zen]

At a 4/12 pitch you really won't have much room up there even if you stick frame it. I would go with trusses, just verify your existing pitch.

 

[MadeByMiller]

I'm liking the idea of stick frame because I may be able to partially vault the ceiling. I believe I could just mount the ceiling joists higher up the rafters say maybe at 9' instead of having my entire ceiling at 8'.

 

[kbs2244]

Remember that, to avoid a visable seam in the roof, you will have to remove the 4x4 sheathing and shingles at the connection point.
New 4x8sheathing to bridge the seam and new shingles to blend with the old.

 

[MadeByMiller]

I had read about that yes, thank you!