Mobile Home Attic Ventilation

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Posts: 8
Joined: Fri Apr 28, 2017 3:10 pm

Tue Aug 29, 2017 9:17 pm

I have a mobile home built in 1994. It is 75' x 16' with an add-on that juts out the back 12'.

I have concerns about how well the attic was ventilated. There are four low profile vents on the roof. In the image below the red one vents the bathroom, the yellow one vents the kitchen stove hood and the two blue ones (one in front and one in back where you cannot see it) vent the attic. Past that, there is a small (maybe 12" diameter) gable vent at the far other end of the house. There isn't a sofit/fascia so the only air intake is the gable vent.
ventilation.jpg (189.8 KiB) Viewed 2024 times
I am redoing the roof and want to redo the ventilation properly. I was planning on placing three turbine vents on the roof as shown in the picture below (yellow circles).
ventilation_placement.png (149.76 KiB) Viewed 2024 times
Is this adequate for exiting hot air?

How do I go about increasing air intake? I was considering either adding gable vents (red circles; north one is already present). Is this adequate? If so, what size? Would I need a vent fan on one or more of them to increase flow?


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Jim from Canada
Posts: 547
Joined: Mon Mar 05, 2007 10:39 am
Location: Seaforth, ON

Wed Aug 30, 2017 10:11 am

See my reply in your other thread.
Remember, minimum code requirement is just that....MINIMUM

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Posts: 5489
Joined: Wed Feb 28, 2007 8:01 pm
Location: Weedsport, NY

Wed Aug 30, 2017 5:05 pm

Since you are redoing the roof, you could add a soffit and vent from under the overhang with a ridge vent at the top. there is really no good way to vent a factory system. I think you will find that a gable system will not work well since the space is not that large, but anything is better than nothing.

"If I can't fix it, I can screw it up so bad no one else can either."