leak from turbine ventilator

Some folks wrap a trash bag around the ventilator to do two things. Stop the heat from leaving the attic in the winter, and stop sideways rain from entering.

One of the best arguments of all for using soffit and peak vents. You may want to investigate that possibility. HTH

Joe

I suggest getting rid of that thing when you can. Until then they make covers for them or you can try some heavy duty plastic very well secured.

Proper passive venting is a much better solution in almost all situations.

Which in the snow belt, is exactly the wrong thing to do. Yea, I know they do it, but you really want that area under the roof to be the same temperature, or close to it, as outside. In areas with no snow or ice accumulation, then OK as long as there is adequate ventilation without it.

Some idiots have turbine type ventilators, and put a garbage bag over them in the winter. This is to cause water vapor carried with the heat to condense in the attic, and to encourage ice dams, and to stop windblown rain from entering, since it would be stopped by a ridge vent.

This is Turtle

Zef , we do this in the south with the plastic bag because we don't have snow and no moisture problem with ice damns or ice on the roof. You can get away with it in the south but where you have snow and ice weather, you can't do it.

TURTLE

the leakage probably occurs when you have precipitation without any wind to spin the turbine. the water can easily splash past the fins, then. I had the same problem and cured it by simply attaching a round piece of galv to the top of the bearing frame (slightly more dia than the turbine). If you had a tinner make a shallow cone, it could maybe have a presentable appearance. In my case the unit isn't visible at all from the ground, so I used a flat piece of tin. In 5 years since, no leaks. If you have a tinner involved, another alternative would be to make a cone shape with a bug screen and a mounting ring, and replace the turbine altogether, and reuse the 12" dia base. hth bill

I've always wondered if those 'turbine ventilators' really work? Do they really move that much more from the attic space than say a dormer might?

In the past, I've read that they are mostly a gimmick. I think that a similar "stovepipe" type of structure with a weather cap would do just as well. Some vertical height would seemingly let it draw like a flue, as opposed to the low profile static vents they sell at HD. I haven't seen any recent tech info on this, though. Bill

On Fri, 03 Dec 2004 16:07:13 GMT, "bill a" scribbled this interesting note:

-- John Willis (Remove the Primes before e-mailing me)

I have a small garage, 22 x 45 - :) and in the summer, some ventilation would be helpful. Maybe I should try a couple of turbine ventilators and some ventilation screens to relieve the air.... but then, I've been wanting to install solar photophelatic cells on the back side......

thanks for the thoughts.

would that be wind from "any direction"?

convection air will create a breeze, wind will do the same, the turbine turns, draws/expells air form the attic............I have been in many attics in my lifetime, ones with some sort of ventilation other than static have always been cooler...............power vents seem best, but pull electicity, so are not optimal for energy conservation in my opinion., but the turbines seem to do a fair job of cooling an attic, whether it gets rid of all moisture or not, ..........well,...........use you imagination.

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