Do Ridge Vents Actually Work?

The attached link claims that ridge vents don’t work. What do you think? Any manufacturers interested in commenting?
savenrg.com/venting.htm

I guess they have never smoke tested a home properly ventilated with ridge vent and soffit vents.

Actually it’s an interesting idea. The thermal check valve.

I can say that when removing a ridge vent, you will feel a lot more hot air escaping the attic from the cut ridge, than with the ridge vent installed. IMO

“I can say that when removing a ridge vent, you will feel a lot more hot air escaping the attic from the cut ridge, than with the ridge vent installed. IMO”

It’s not your opinion, it’s a fact. I don’t get the point though.

“I can say that when removing a ridge vent, you will feel a lot more hot air escaping the attic from the cut ridge, than with the ridge vent installed. IMO”

I think his point would be that, although the ridge vent does work, that it does not work well enough.
Maybe you could ventilate more air if you had a bigger vent, such as some dormer vents, up at the ridge.

You should rip the muffler off your car because it restricts exhaust flow…

While I’m sure running those ugly ass dormer vents on either side of the ridge every 3 feet might allow better airflow than standard low profile ridge vent I wouldn’t want that crap on my house, it looks like hell. Why not run chicken wire for soffit vents and hang a jet engine in the attic for exhaust?! You have to maintain a balance between efficiency and aesthetics. This ridge vent discussion is becoming like a tiring theological debate now… Of course it works.

Wait…I got it!!!

http://img503.imageshack.us/img503/775/dscf1061copyjj4.jpg

Yeah. Behold the new standard of ventilation!

.

Yeah, tarmonkey, that is my kind of gable exhaust vent!

Look, the guy on the savenrg web site measured the temp in an attic. The attic had soffit vents and a ridge vent. Then he added those ugly dormer vents up top, for added exhaust vents, and the temp dropped 40 degrees.
I am intrigued by the idea of increasing the roof ventilation, that’s all. The guy at savenrg makes a good case. He sounds believable, I don’t know why he would make it up, since he says that you can buy the same dormer vents at Home Depot.
So, if there is a better way to ventilate an attic, without using a fan powered device, I am going to look into it.

i am working on this one right now…vent problem solved

“So, if there is a better way to ventilate an attic, without using a fan powered device, I am going to look into it.”

I hear ya. As I said though, you’re trying to achive a balance between functionality and something that is pleasing to the eye.

You guys are funny…

Does ridge vent work?

Does it hurt when you fall off?

Ive never installed a shingle roof with out it!

Cant wait to see the next topic of humor~

LR

If that’s the case, this thread is quite buoyant, enough for a balloon, a basket and six people.
If you are talking physics, well, that’s not conjecture or opinions, but fact based on real science. Most of this thread is opinions, but based on what? Tradition? What looks good? What creates the fewest callbacks? Every roof penetration carries with it the potential for a leak. The probability of which is dictated solely by the level of attention that was given putting it in.
Basic facts: Builders will kill to save $10/house. Adds up if you’re doing doing 2,000 houses. So? So low bidder gets the job. You think Jose’ and hose B who just got hired to put vents in a roof really care about anything but their paycheck they are going to send to Mexico on Friday? So, the builder specs a ridgevent, cheaper the better.
Now comes the physics: “heat rises” is incorrect. Fluids (air/liquid/gases), rise via convection. Hot air will not reverse direction and flow downhill to escape a hot attic…out of any vent.

[quote=“ayev8tor”]If that’s the case, this thread is quite buoyant, enough for a balloon, a basket and six people.
If you are talking physics, well, that’s not conjecture or opinions, but fact based on real science. Most of this thread is opinions, but based on what? Tradition? What looks good? What creates the fewest callbacks? Every roof penetration carries with it the potential for a leak. The probability of which is dictated solely by the level of attention that was given putting it in.
Basic facts: Builders will kill to save $10/house. Adds up if you’re doing doing 2,000 houses. So? So low bidder gets the job. You think Jose’ and hose B who just got hired to put vents in a roof really care about anything but their paycheck they are going to send to Mexico on Friday? So, the builder specs a ridgevent, cheaper the better.
Now comes the physics: “heat rises” is incorrect. Fluids (air/liquid/gases), rise via convection. Hot air will not reverse direction and flow downhill to escape a hot attic…out of any vent.[/quote]

All the prejudicial bashing aside, I guess you are saying that a ridge vent does not work? Apparently, you contend that water can indeed go uphill. I agree that water can rise 1" per 10 MPH wind on a 6 pitch. I know that water enters many ridge vents that I have inspected, as the cause of leaks. I also agree that air has a hard time going back down the ridge vent.

I resist ridge vents for those reasons, and the ranting aside, I see no reason given on this thread yet to use them. Aesthetics, really…? Paint the turbines?

somtimes they dont work well on a house with choped up dormers and things. a power vent with thermostat and humidistat is the best for many situations. ventilation is a lot of thery, kinda like global warming right ? 8)

All I know is I have 3.5 inches of open-cell foam on the underside of my roof deck and my attic stays relatively cool in the hot Houston summers! Plus, I saved $130 bucks on my electric bill over last June’s bill. I left all my vents open, so moisture can vent out and to provide breathable air for my hot water heater and furnace in my attic (it’s a Texas thing).

I’m not a huge fan of ridge vents. All of my builders have us put in turtle vents unless a vault.

Most of the manufacturers recommend ridge vent but sometimes I wonder if it’s because they don’t want to invest a ton of money in making a metal turtle vent that won’t allow rodents into the house. At one time Certainteed made a plastic vent with sides that wouldn’t allow rodents in but with laminate shingles lifting the sides was a real pain in the Winter, in addition to gun nailing.

A builder friend of mine had a house built a few years ago. Ridge vent was installed and he was never pleased with the amount of heat in the attic. Told him to check to make sure the roofers cut the felt out at the peak. I was to busy at the time to drive 2 hours one way to do it. One day he decided to help air get out so he cut in a few turle vents towards the peak (I know it’s not good to double vent the roof). He said it was like a heat wave blowing at his face after he cut it open. Looking back he wished he would have just specked out turtle vents.

On the rental I removed the ridge vent by taking out the top course of plywood on both sides and running flush with the peak. Then cut in holes for turtle vents. Been up in the attic a few times in the Summer both before and after. With turtle vents it’s quite a bit cooler.

Almost every city inspector who sees a power vent sort of looks at it like “Why?”.

The idea of a solar powered vent is good but to run electricity when you could properly vent for free makes little to no sense.

Roof ventalation is code around here. Its up to the roofer to determine what kind of vent he will use.I use ridge vents when there is no attic or tough spots, but would rather use eyebrow, dormer vents better flow in my opinion. No ridge vent or dormer vent will work if you dont have good soffet venting.

Lots and lots and lots of ridge vents out there. Some better 'n others.

Never had a ridge vent installation leak. Have had issues w/ turbines however

[quote=“Gus Jones”]Lots and lots and lots of ridge vents out there. Some better 'n others.

Never had a ridge vent installation leak. Have had issues w/ turbines however[/quote]

Ditto