Dehumidifiers (click if you dare)

[Madman]

Originally Posted by GoinAllTheWay

Attic? Do you have living space above the garage?

Or do you just mean the peaked part of the roof?

But to answer your question, yes, roof venting wont do much unless there is a source of incoming air at ground level. Normally most garages aren't sealed up airtight as air can still get in around the main door for the most part.

Any garage is going to feel humid shortly after you park a hot wet car in there but it should clear within a few hours.

Attic - as in the void space above his closed in ceilings in the garage.

[Sliver]

Originally Posted by GoinAllTheWay

Attic? Do you have living space above the garage?

Or do you just mean the peaked part of the roof?

But to answer your question, yes, roof venting wont do much unless there is a source of incoming air at ground level. Normally most garages aren't sealed up airtight as air can still get in around the main door for the most part.

Any garage is going to feel humid shortly after you park a hot wet car in there but it should clear within a few hours.

It's the peaked part of the roof. I built a 6' x 20' platform up there for storage, which is why I called it an attic, but it's nothing elaborate.

I think because of the vinyl walls my garage is sealed up more than a typical garage.

[GoinAllTheWay]

Ok, just making sure we are on the same page.

Ya, I don't think I've seen that kind of effort to seal up a garage and certainly contributing to moisture being trapped.

Here's a thought, are your soffits open? You should approach that the same way as the soffits on your house. That's where you get your incoming air.

Similar to this;

[killer_carlson]

I thought I heard somewhere that large dogs are good for humidity as well. Something to do with opening the garage when taking the dog for a walk...

[Bill Bumface]

Silver, I had the exact same problem, and the issue is almost non existent with the through-the-wall fan. I'm telling yah. Broan 509 and a humidistat. I think it was $120 with shipping, one hole to cut in the wall, and about 20 minutes of install and wiring.

My tools used to rust up real bad, no issues anymore.

[Sliver]

Originally Posted by GoinAllTheWay

Ok, just making sure we are on the same page.

Ya, I don't think I've seen that kind of effort to seal up a garage and certainly contributing to moisture being trapped.

Here's a thought, are your soffits open? You should approach that the same way as the soffits on your house. That's where you get your incoming air.

Similar to this;

No, I don't have any vents in the soffits. JFC, another thing to the list I guess, eh? Thanks a lot man.

[Sliver]

Originally Posted by hulkrogan

Silver, I had the exact same problem, and the issue is almost non existent with the through-the-wall fan. I'm telling yah. Broan 509 and a humidistat. I think it was $120 with shipping, one hole to cut in the wall, and about 20 minutes of install and wiring.

My tools used to rust up real bad, no issues anymore.

Okay, I'm going to start there. I'll get a through-wall fan and humidistat.

Thanks!

I'm also going to get a powered vent for the roof, though, just to cover all my bases.

If I need to vent the soffits, I'll do that, but I'm not going to hit that right out of the gates.

[Madman]

Are your soffits solid like that picture? Or are they newer and slotted?

I think you have a couple options to try first personally.

[GoinAllTheWay]

That's 100% for sure your issue then.

And a very easy fix at that.

[undercoverbrother]

Originally Posted by Sliver

Okay, I'm going to start there. I'll get a through-wall fan and humidistat.

Thanks!

I'm also going to get a powered vent for the roof, though, just to cover all my bases.

If I need to vent the soffits, I'll do that, but I'm not going to hit that right out of the gates.

To be honest I think you are approaching this problem wrong. You are fighting the symptom not the disease.

While your plan might reduce the increased humidty, increaseing the venting in the garage will eliminate it.

Just a thought, but good luck, bro.

[Bill Bumface]

Originally Posted by Sliver

Okay, I'm going to start there. I'll get a through-wall fan and humidistat.

Thanks!

I'm also going to get a powered vent for the roof, though, just to cover all my bases.

The dehumidistat I used is actually made for attic fans. Depending on the load of the fans, you could run both off one controller.

[Burninator]

Originally Posted by Sliver

No, I don't have any vents in the soffits. JFC, another thing to the list I guess, eh? Thanks a lot man.

I would be surprised if you didn't have the vents. Perhaps they look something like this.

NSFW!

I would start with just the in wall vent and see how it goes from there. Easier to try one thing at a time and troubleshoot from there. Is your attic insulated?

[Sliver]

Yes, attic is insulated.

There definitely isn't any venting in the soffits. It was built in 1969 and they're made of wood.

[Sliver]

Originally Posted by GoinAllTheWay

That's 100% for sure your issue then.

And a very easy fix at that.

Do you think if I add four 4" circular soffit vents I'll be okay, or do you need way more than that?

http://www.homedepot.com/p/Speedi-Pr...-202907299-_-N

[GoinAllTheWay]

It would certainly be a hell of a lot better than what you have now. If it was me, I'd start with 4, 2 on either side but space them in such a way that you could add 1 more on each side if need be in between the 2 you already did.

But I think 4 should get the job done no problem for a 2 car garage.

[Sliver]

Originally Posted by GoinAllTheWay

It would certainly be a hell of a lot better than what you have now. If it was me, I'd start with 4, 2 on either side but space them in such a way that you could add 1 more on each side if need be in between the 2 you already did.

But I think 4 should get the job done no problem for a 2 car garage.

Sick. I'll pick some up tomorrow.

Thanks to everyone for your help today. Much appreciated.

[GoinAllTheWay]

As per CP protocol, you must report back results when work is done!

[Sliver]

Will do. Stuff is underway, but I will give a full report when all is said and done.

[Bean]

Sliver, I'm in the same position as you and thought I'd bump the thread to see how your solution to the humidity problem is going.

[calgarywinning]

Also, we need pictures of your garage man...