Current best practice for roof vents?

 We're re-roofing this spring and I'd like to replace the roof vents at
the same time.

We currently have turbine-style vents which were installed decades ago
when the attic was insulated and vented.

The turbines have moving parts and I'm certain that they'll start to
fail soon, probably at the worst time. Last winter during a nasty cold
spell following a heavy snow, one did start screaming as it turned, but
quieted down as soon as the sun came out the next day. We probably won't
be so lucky next time.

On the other hand, the turbines are tall and stick out above the snow
on the roof. We often have a foot of snow on the roof for months at a
time.

Other than trying to avoid turbines, does the style matter, so long as
they're big enough and there's enough of them?

--
Bert Hyman    St. Paul, MN    bert@iphouse.com

 

Maybe so, but

A) I don't do roofs.
B) I'm interested in hearing about the pros & cons of other styles

--
Bert Hyman    St. Paul, MN    bert@iphouse.com

 Bert Hyman wrote:


I'm a fan of turbine vents, especially where the summers are very hot.
They work better than passive vents, and are straightforward to replace
if they get noisy and/or rusty.

 

As I mentioned in my other post, I don't do roofs, but ...

Is there a replaceable bearing or some such, or is the entire rotating
assembly replaced?

Are they of standard size, so that I can wander into my nearest
home-improvement store and pick up a replacement?

--
Bert Hyman    St. Paul, MN    bert@iphouse.com

 Bert Hyman wrote:


I've never tried to replace the bearings, but have "dropped in" several
replacements in the past.  There are several sizes available, but I
believe they are standard.