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-   -   Roof Ventilation - Gable Vents? (http://www.diychatroom.com/f9/roof-ventilation-gable-vents-180043/)

DRILLINDK 05-20-2013 02:20 PM

Roof Ventilation - Gable Vents?
 
I purchased a fourplex rental property last summer. The seller agreed to install a new roof. I've been informed by several individuals that my roof contans no ventilation. The city inspector, who is a great guy, suggested installing some gable vents to increase the life of the roof.


Would it be prudent of me to install these gable vents?

joecaption 05-20-2013 02:24 PM

#1 go back and add your location to your profile. Just go to quick links to edit.
Why not a ridge vent so the whole roof gets vented not just the ends?
Is there any soffit vents? If not adding any vents is not going to do much good.

DRILLINDK 05-20-2013 02:28 PM

Thanks for the quick reply Joe! I updated my location on my profile, thanks for the suggestion. There are no soffit vents in the roof. I believe ridge vents were mentioned as well and will go with what's best.

joecaption 05-20-2013 02:36 PM

Soffit vents are under the roofing not on the roof.
Got a picture so we can see what you have to work with?
Without soffit vents there's no make up air for the roof vents and it will cause a negitive pressure in the attic which will suck out the conditioned air in side the house.
Picture sucking on a straw with your finger over the end of it.

Tetiana 08-04-2016 08:37 PM

Re: Roof Ventilation - Gable Vents?
 
Gable vents only ventilate a very small area near where they are installed and do not provide proper ventilation. They were done in older houses that were not insulated much and were able to breathe more on their own. You need a ridge vent and soffit vents installed. As I mentioned in another reply, I hired an architect to figure out the calculations for me and determine what size ridge vents and how many soffit vents are needed. He also did not recommend the small box vents that are commonly seen on roofs now. Either an architect or a contractor that calculates these ventilation problems can help.


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