Wind Turbines
#1
07-14-02, 04:09 PM
Wind Turbines
If not too taxing, I'd like to install several wind turbines on my home. What are the steps for a shake over 4 x 1 inch slat style roof? Any help would be appreciated. 
#2
07-15-02, 05:07 AM
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Go up in the attic, and drive a marker nail or long screw right in the center of the space between two roof rafters up through the roof where you want to position the turbines.
Go up on the roof, remove the shakes around the nail/screw, and cut a round hole per the directions that should come with the wind turbine.
Since you're dealing with shake slats, instead of plywood roof sheathing, you need to reinforce the slat ends that you cut with framing in the attic between the rafters.
Slide the upperpart of the turbine under the shakes above, and the bottom part over the top of the shakes below. Use black plastic roofing cement to seal under the edges of the turbine,before nailing or screwing the flanges onto the roof framing.
"Glue" shakes over the edges of the turbine flanges with plastic roofing cement to match the surrounding shakes.
Good Luck!
Mike
Go up on the roof, remove the shakes around the nail/screw, and cut a round hole per the directions that should come with the wind turbine.
Since you're dealing with shake slats, instead of plywood roof sheathing, you need to reinforce the slat ends that you cut with framing in the attic between the rafters.
Slide the upperpart of the turbine under the shakes above, and the bottom part over the top of the shakes below. Use black plastic roofing cement to seal under the edges of the turbine,before nailing or screwing the flanges onto the roof framing.
"Glue" shakes over the edges of the turbine flanges with plastic roofing cement to match the surrounding shakes.
Good Luck!
Mike
#3
07-29-02, 11:54 AM
Greetings,
If you can install a ridge vent system it will be far, far better than turbines.
Turbines can become static when they reach certain RPMs. They can also short circuit one to another and not draw like you would like them too.
You have to cover them in the winter time when you need ventiation the most.
This a technology that was originally developed for large industrial buildings with 16-20- foot ceilings. It's not a viable carry over technology.
Thank you
If you can install a ridge vent system it will be far, far better than turbines.
Turbines can become static when they reach certain RPMs. They can also short circuit one to another and not draw like you would like them too.
You have to cover them in the winter time when you need ventiation the most.
This a technology that was originally developed for large industrial buildings with 16-20- foot ceilings. It's not a viable carry over technology.
Thank you
#4
07-29-02, 07:15 PM
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Turbines vs Ridge vents
Here in windy Oklahoma you see FAR more homes (both old and new) using turbines than ridge vents.
Turbines are much easier to install, and if you use enough (don't just stick 2 up there regardless of how big your attic is) they will work just as well as ridge vents.
Although Quality shingle over ridge vents do work well the cheap metal ones perform poorly, so if you go with ridge vents get the good stuff.
No matter which way you go be sure to have enough intake vents !!!
Turbines are much easier to install, and if you use enough (don't just stick 2 up there regardless of how big your attic is) they will work just as well as ridge vents.
Although Quality shingle over ridge vents do work well the cheap metal ones perform poorly, so if you go with ridge vents get the good stuff.
No matter which way you go be sure to have enough intake vents !!!
#5
07-30-02, 07:49 AM
Greetings,
The previous comments about sums it up. Just because it's easier and every one else is doing it, it must be the best. Unfortunately this logic has spread to most parts of our daily lives.
Since ridge vents allow air to be drawn along the entire length of the roof it is considered to be 90%+ efficent. Also it draws when the roof is warm to hot even if the wind IS NOT blowing. Actually attic venting is not for removing hot because the hot air rises and cannot enter the house. It is for removing moisture in the winter time which can cause serious structural damage.
Turbines draw primarially from the nearest opening and there fore some to most of the attic can be left unvented. As I stated above turbines have other seious drawbacks. In 30 years I have not seen a legitimate test that claimed turbines were an effective method.
Being as it gets as hot as it does in the summer you might want to consider installing a radiant barrier over your existing attic insulation. You could save up to 30%+ on you a/c bills.
Thank you for considering my opinion.
The previous comments about sums it up. Just because it's easier and every one else is doing it, it must be the best. Unfortunately this logic has spread to most parts of our daily lives.
Since ridge vents allow air to be drawn along the entire length of the roof it is considered to be 90%+ efficent. Also it draws when the roof is warm to hot even if the wind IS NOT blowing. Actually attic venting is not for removing hot because the hot air rises and cannot enter the house. It is for removing moisture in the winter time which can cause serious structural damage.
Turbines draw primarially from the nearest opening and there fore some to most of the attic can be left unvented. As I stated above turbines have other seious drawbacks. In 30 years I have not seen a legitimate test that claimed turbines were an effective method.
Being as it gets as hot as it does in the summer you might want to consider installing a radiant barrier over your existing attic insulation. You could save up to 30%+ on you a/c bills.
Thank you for considering my opinion.
#6
07-30-02, 07:09 PM
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Turbine PROOF
Today it was a sunny 90 outside when I got home at 6:00, my house has little shade and the thermometer (digital) in the attic read 103.
So they DO cool the attic air just like a ridge vents, but turbines or any other air movement do nothing for the radiant heat gain
Many ridge vents on the other hand are subject to the "filters" and screens plugging up over time and reducing efficiency.
So they DO cool the attic air just like a ridge vents, but turbines or any other air movement do nothing for the radiant heat gain
Many ridge vents on the other hand are subject to the "filters" and screens plugging up over time and reducing efficiency.
#7
07-30-02, 08:03 PM
Geetings,
Good observation on filtered types. That is a sure sign of poor design. Check out cor-a-vent.com
At 90 degs with a RB sys over the attic insulation and minimun southern window heat gain there's a good chance your a/c wouldn't even come on, or run very little. With ridge vents you have about the best you can get.
Thank you for considering my opinion.
Good observation on filtered types. That is a sure sign of poor design. Check out cor-a-vent.com
At 90 degs with a RB sys over the attic insulation and minimun southern window heat gain there's a good chance your a/c wouldn't even come on, or run very little. With ridge vents you have about the best you can get.
Thank you for considering my opinion.
