Roof Venting Help

[Mattwb18]

Hello everyone,

I am in need of a little help on my detached 2 car garage i am currently finishing. First off i am in Savannah, GA in a hot and humid climate. I have read a lot on roof venting and have pretty much come to the conclusion that soffit vents and a ridge vent is the best setup for roof venting. My dilemma is that my garage was built when ipurchased my home last year and there was no venting installed, so a ridge vent is out of the question. My question is this, with installing soffit vent louvres, what is the best way to vent the hot air out? Gable vents, mushroom vents? Thanks for any help!!

 

[9GUY9]

ridge vents are very easy to add. I put one in my unvented garage last year. Took about 2 hours, a bundle of shingles, box of nails and a roll of ridge vent.

Snap a line 2" down from the peak on each side of the roof as long as you would like your vent to be, cut it out with a old circular saw blade. Lay down ridge vent with a couple nails. Cap with new shingles.

 

[LB-1911]

You may want to look at Cor-A-Vent Ridge Ventilation Systems V-400E or
V-300 -

http://www.cor-a-vent.com/

 

[Zeke]

I think it would be easier to put on a new ridge than install anything in the roof field. If you do gable vents it might add a nice touch looks wise. Put a fan in.

 

[Tim The Tool Man]

I agree, even on a step roof, adding a ridge vent would be by far your easiest option.

 

[where2]

If you go with a ridge vent, be sure it is a ridge vent designed for use in hurricane prone areas. My BIL's house, built in 1996, had wind driven rain coming in the ridge vent during hurricane Frances, Jeanne, and Wilma.

I guess in 1996, nobody asked what happens when you spray a hose on the roof and blow the rain around with a leaf blower... When I just Google'd ridge vents, they are NOT all the same. Some seem to have an extra lip to keep wind driven water from migrating UP the roof and being blown directly in the vent. Not sure it works, but keep it in mind.

 

[NUTTSGT]

When I built the house garage, I didn't use vented soffit, my mistake. About 2 summers ago, I added some, pulled the fascia back, popped the nail and swapped out the piece of soffit.

 

[CTyankee]

Was just doing some venting yesterday...What's the interior space like?...ceiling with attic space?...open rafter bays?...finished catherdral? Ridge vent if possible... or some gable vents as mentioned.

 

[Mattwb18]

I am in the process of installing the insulation and drywall flat ceiling, with attic space.
Also, i have small louvres to use for the soffit vents.

 

[Mattwb18]

Was just doing some venting yesterday...What's the interior space like?...ceiling with attic space?...open rafter bays?...finished catherdral? Ridge vent if possible... or some gable vents as mentioned.

With the gable vents, would i need one vent with fan or only the vent?

 

[where2]

With the gable vents, would i need one vent with fan or only the vent?

I'd use the fan... If you were closer, I'd make you a great deal on the one kicking around my garage with a thermostatic switch on it...

 

[Mattwb18]

If you are interested in shipping it let me know, meanwhile would something like this do the job?
http://www.amazon.com/dp/B000LNJYOO/?tag=atomicindus08-20

 

[Tim The Tool Man]

If you are interested in shipping it let me know, meanwhile would something like this do the job?
http://www.amazon.com/dp/B000LNJYOO/?tag=atomicindus08-20

I think you are confusing a roof vent fan with a gable vent fan. This is a gable vent fan:

On a sliding scale of ease of installation you will find a passive ridge vent to be the easiest, roof vent fan next and a gable vent fan the hardest because you would want to make sure the trim and siding match....

 

[Pate]

I used 3 Lomanco 2000 series on my new build and had to go up in the attic to check the AC airhandler and was shocked at how cool it was. It was 90+ outside and I expected to be able to cook an egg on my *** up there.

I also used thermidistat controls (temp and humidity) to help with the moisture all winter.

I never heard of the brand, but have a friend who owns a roofing supply and that's all he will sell.

 

[hoffman912]

I was just thinking about this the other day. I am in ohio (gets warm and humid in summer), and the garage to the house we are closing on next week doesnt seem to have a vent. its 100 years old, slate (or faux slate) roof. Should i worry about putting in a gable vent?

 

[Doug1]

I just added a ridge vents and soffits earlier this summer. When the insulation went in, they installed the plastic channels that run from the soffits to the ridge even though there was not soffit or ridge at that time. Now I am glad they did because adding the vent and soffit were not all that bad.

 

[Mattwb18]

I think you are confusing a roof vent fan with a gable vent fan. This is a gable vent fan:

On a sliding scale of ease of installation you will find a passive ridge vent to be the easiest, roof vent fan next and a gable vent fan the hardest because you would want to make sure the trim and siding match....

Thanks for the reply, but i wasn't confusing them, just trying to understand all my options and thought the roof vent would be the easiest/best venting solution compared to the fan and vent being on the gable. It seems for my situation the gable vent and fan would be the best options the back of my garage faces a lagoon/wooded area, giving me the option of not really needing the vent to match, though my trim is all white.