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Proper roof for carport.


Marvinator's Avatar
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03-20-17, 05:38 AM   #1 (permalink)  
Proper roof for carport.

I have an old detached carport that is falling down. I plan to rebuild it, ripping out the old roof and replacing, reusing the corrugated roofing that is already there.

My question is support. The carport I have now had what appear to be 2x6 joists to support the corrugated roofing. In the last weekend, I've come across two other carports which used 2x4s for the roofing. Now, obviously, the 2x6 woudl give me more support, but the 2x4s would be cheaper and right now, that's my aim, to do this as inexpensively as I can.

So, which is right? Is there a code on this?


THanks. I always get the best help here.

 
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03-20-17, 05:42 AM   #2 (permalink)  
How wide is the carport? how much distance between supports with the rafters.


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03-20-17, 05:53 AM   #3 (permalink)  
OOps. You're using terms I don't understand. I have a carport that is wide as two cars, but has supports in the center. The 'joists' run from the center to the sides. On the joists rest the corrugated roofing material. Does this help?

 
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03-20-17, 06:01 AM   #4 (permalink)  
pics would be helpful - http://www.doityourself.com/forum/el...-pictures.html

How long the space between supports determines what size the 2x should be. The longer the unsupported span, the larger the 2x needs to be. I assume the 2xs are attached to a ridge beam ? what is it's size.


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03-20-17, 06:22 AM   #5 (permalink)  
I will get some pics tonight if I can, and post them tomorrow. THANKS!

 
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03-20-17, 06:22 AM   #6 (permalink)  
We need to know how far the rafters (they will support your roofing) span (how far apart are the supports for the rafters). It will also be helpful to know how steeply the roof is pitched/sloped and where you are located so we know how much of a snow load should be considered. I am betting though that you will need 2x6" lumber for your rafters.

 
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03-22-17, 05:58 PM   #7 (permalink)  
Ok, here are some pics which might help.
This is my current carport. (Sorry about the mess, just finishing up other projects.) You can see it is a 2 car, with a support in the center.
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This is a shot of the center of the carport, where the 2x6s meet.
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This is the carport in the neighborhood (just built this last week)
YOu can see that it is made totally of 2x4s (treated lumber and corrugated metal.)
It is also a 2 car size.
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from the side
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Size:  49.7 KB

 
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03-23-17, 07:02 AM   #8 (permalink)  
Ok, I think I am an idiot today. It is quite apparent that the carport down the street is made with 2x6s and not 2x4s. I measured my carport and it is made with 2x8s! Appears to be 24" spaces, too.

So, I think I can change to 2x6s and be ok with strength and code, yes?

 
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03-24-17, 04:07 AM   #9 (permalink)  
2x6 sounds a lot better


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