Venting Detached Garage w/o Gables?

[QwikKotaTx]

I searched for as much info as possible but still have questions on adding ventilation to my detached 2 car. This garage does not have any gables on the sides. It's basically a pyramid shaped roof as pictured below, not mine but similar. Can ridge vents be added to the sloping ridges or will that be a bad idea for rain etc? Does anyone make a vent cap for the very top?? Another option is some vents in the center of each roof section and a whole house fan on the ceiling joists. I will be decking the top of the joists for storage so that should allow for a sealed area to pressurize and help pull heat out. There isn't much overhang (unlike in the pic) for soffit I don't believe. New home for us so I am not 100% familiar with it.

 

[wssix99]

Copula:

 

[Blk88GT]

 

[QwikKotaTx]

Thank you for the input, hopefully my HOA allows for several vents on the roof!

 

[LB-1911]

I will be decking the top of the joists for storage so that should allow for a sealed area to pressurize and help pull heat out.

Are your joists - 2x4 or 2x6 ? 24 inches on center?

 

[QwikKotaTx]

Are your joists - 2x4 or 2x6 ? 24 inches on center?

They are either 2x6 or 2x8, I briefly measured last night and looks like 24" centers. A few are laminated 2 or 3 wide for main load bearing. I will leave an area open for access and may put in an attic drop down door if I can find a cheap used one, otherwise just use my ladder.

 

[CNGsaves]

Thank you for the input, hopefully my HOA allows for several vents on the roof!

HOA should have NOTHING to do with vents (none of their business)!! Get up on ladder as I'm sure your house has similiar passive vents as pictured above (generally on back side of roof, so they are out of view).

Just put your vents on portions of garage roof that they won't obviously be seen from street view - - - I'd say one vent on two sides would be adequate and keep your curb appeal at it's best.

Another option is a single "whirly-bird" vent that spins and draws out heat from attic of garage.

Which ever vent you put in, don't skimp on gooey tar under the flange that seals with shingles as last thing you want are leaks after you put in vent.

Guessing that you're in TX but now would be good time to Update GJ Profile with your City and State.

 

[BRIANBB]

Put a roll up door on the other end from the garage door. I did that with mine and there is always a cool breeze blowing through.

 

[kmacht]

Think about maybe a skylight instead. They have some models that automatically open with temperature and close with a rain sensor. You get ventillation as well as addtional light. Watch craigslist as you can sometimes find them pretty inexpensive there.

Keith

 

[rburke65]

Be aware that with a whole house fan, the amount of air that the fan will draw.....and push into the attic ( measured in cubic foot per minute ) must be equal to the available roof vents in qubic feet. So if your fan pushes 400 cu. ft. a minute, you must have 400 sq. ft. in vent area. And oh....that is a "hip" roof that you have there.

 

[QwikKotaTx]

HOA should have NOTHING to do with vents (none of their business)!! Get up on ladder as I'm sure your house has similiar passive vents as pictured above (generally on back side of roof, so they are out of view).

Just put your vents on portions of garage roof that they won't obviously be seen from street view - - - I'd say one vent on two sides would be adequate and keep your curb appeal at it's best.

Another option is a single "whirly-bird" vent that spins and draws out heat from attic of garage.

Which ever vent you put in, don't skimp on gooey tar under the flange that seals with shingles as last thing you want are leaks after you put in vent.

Guessing that you're in TX but now would be good time to Update GJ Profile with your City and State.

Yeah, I was thinking vents on the sides and one on the back, avoiding the obvious front roof section. I think they are more bark than bite at the HOA, I submitted paperwork to install a satellite dish and they never even got back to me. Not too worried but hard to replace sheathing/shingles after the sawzall gets going. I am familiar with the caulk tar from my old house and leaks due to old roof. Thankfully the roof on the garage and house are brand new. House has ridge vents and soffit vents but not much ridge section so attic is also quite warm. Power bill is a killer. Location updated!

 

[Moose97]

You can either add the vent caps (as pictures above - I would add at least 6) or you could install turbines. two should do the trick. Then you need to add a lot of soffit vents. The more the better. HOA shouldn't have a say in this. It should have been vented when it was built.

 

[Scott H in Wheaton]

Garage: add 3 "low profile" "mushroom" or "turtle vents". One on the back, one on each side.

House: you should have 18-22 inches (R49 - R60) of insulation in the attic. And especially for Texas, a reflective radiant barrier on the ceiling of the attic. Its like wallpapering your attic with foil. The radiant barrier will prevent most of the heat from being absorbed into the attic.

 

[QwikKotaTx]

Thank you for the replies. I will up the vents as much as possible but it's an unfinished garage and the attic area is for storage. I don't foresee any insulation or radiant barrier going on the attic floor but perhaps on the rafters as I have a ton of barrier material on hand.

 

[Scott H in Wheaton]

Thank you for the replies. I will up the vents as much as possible but it's an unfinished garage and the attic area is for storage. I don't foresee any insulation or radiant barrier going on the attic floor but perhaps on the rafters as I have a ton of barrier material on hand.

If you will re-read my post I was directing the comments about the ATTIC INSULATION to your residence, where you complained about excessive heat

 

[NUTTSGT]

Do you have any vented soffit ?

 

[QwikKotaTx]

If you will re-read my post I was directing the comments about the ATTIC INSULATION to your residence, where you complained about excessive heat

Oh duh! Sorry, yes it has a lot of insulation and I will be putting the barrier up this winter. Never hurts to add more fill though. The roofing guys didn't cut the sheathing back very far though for the ridge vents.