Roofing vent code in North Carolina.

Asked by Durham, Durham, NC Wed Apr 29, 2009

Does anyone know what is the roofing code in North Carolina,

when does roof require a vent or not. I notice that every one in my neighboorhood has a two vents on their roof , except my house. How does the house ventilate air in the summer, did the builder stick to the code?

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5
Loren Green, Other Pro, Buckeye, AZ
Wed Apr 29, 2009
It depends on what type of roof your house has and when it was built. The 2003 International Residential Code rquires 1 sq. ft. of net free vent area per 150 sq. ft. of attic. I have never heard of any jurisdiction varying from that rule.
One or two gable vents on the sides of homes are usually insufficient by themselves. There should be soffit vents at the bottom. Sometimes ridge vents are also used. If the roof is concrete tile then you may not see the vents from the ground at all. The best way to tell is to go up in the attic and look for light coming through the plywood.
Send me pictures of any venting you can find and I might be able to tell you if it is enough.
lgreen@greenshomedesign.com
1 vote
Caleb Hart, Renter, Orem, UT
Tue Feb 10, 2015
I was unaware that the codes were different from state to state. I know that a lot of people ventilate their attics. I guess they're trying to make sure moisture stays out of the inside of the house. Plus, there's a bunch of different types of vents. http://www.slaughter-roofing.com/services/
0 votes
Eugene Dean, Home Buyer, Provo, UT
Sat Nov 22, 2014
The law won't require you to have much roof ventilation. I think it is a good idea to have more than is necessary. I can't stand a stuffy house. I have a skylight that I can open and close. It is my favorite feature in my home.

http://www.skydome.com.au
0 votes
garypuntman, , Los Angeles, CA
Fri Nov 21, 2014
I'm not sure what the code is for this. I think it's a good idea to get a vent just in case. I think this will help your home overall. It doesn't seem like it would hurt to do this, plus it would be the safer option just in case it is the code. http://russlundinroofing.com/Roof%20Ventilation.aspx
0 votes
Kerry Johnson, Agent, Chapel Hill, NC
Wed Apr 29, 2009
This is a question for a general contractor/ home inspector and I am sure any of them would be happy to answer this for you.

Thanks,
Kerry Johnson
0 votes
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