Installing roof vents 1

I had a problem with heat build up in my roof. So i installed roof vents to vent hot air out of the roof. I install vents under the eaves ( near the gutter ) the cool air comes in through the vents under the eaves goes into the roof turns into hot air, rises and exits through the roof vents. Please note that the roof vent sides are also supposed to go under the tiles. 1/10/09 the vents make the house noticeably cooler on a hot day, 24/05/2010 iv'e had these vents now for a few summers and i think the house is cooler.

Category:

Howto & Style

Tags:

• attic ventilation
• roof
• vents
• hot
• ceiling
• cool
• install
• installation
• loft
• heat
• house
• cooling
• huis

[austpom333]

I have a hunch that the color of roofs has a lot to do with the amount of heat build up in houses over summer, I think that a light paint color ( yellow, white etc ) would be much cooler than say black etc, it's like a car - on a hot day hold your hand for a short time on a black car then go over and hold your hand for a short time on a white car - you will see what i mean. I am going to paint a house roof Dulux clotted cream color, I did the same with a garage and the garage is much cooler....

[darrenjc78]

Great video thanks!

I also have a high pitched tiled roof that has a large attic space. The house is two storey and gets really hot inside.

Would you also recommend installing plaster vents inside the house to let the heat directly into the attic?

I will be installing the eve vents as in your orhter video, but wasn't sure if I need to ad plaster vents inside the house. At the moment there is no air flow from the sealed plaster rooms to the attic....or very little.

Cheers

[austpom333]

@darrenjc78 I would have a talk to the maker of the vents to decide whether or not to install inside plaster vents. I myself wouldn't install inside plaster vents because maybe heat buildup in the upper floors may be worked down through the vents on very hot days, as well as dust and insulation, besides i personally don't like the look of interior plaster vents

[triplex1983]

I believe that you should not glue the bottom part that connects to the base flashing as this is used for a natural gutter.

[austpom333]

@triplex1983 Thats what it said in the installation manual

[RetroFishman]

Hope you have a passive intake source in that hip roof like some dormers or under eave vents sofits so those turbines will work properly. At no time should the exhaust exceed the amount of intake ventilation. That type of roof should have some air intake sources. Convection & wind driven.

[austpom333]

@RetroFishman Yep that's installing roof vents 2 - i will link them up

[antonioscheel]

Mate awesome video I am about to install one but the instructions where confusing! how these work is exactly like a fan but in reverse, they create a vacuum within the roof cavity to remove the hot air you can notice this if you hold the turbine(palm facing up) and spin it you can feel the rush of air low pressure air under your hand. these can be installed without the eave vents but the low and high pressure cycle produced will not work at max capacity.

[Rangerbelt]

You also want good airflow in the attic in the winter to prevent buildup of humidity.

[rolficus]

the heat is expelled through the top but as it turns it also draws in newer air on a still hot day the whirly vent will spin from heat alone your eaves breather holes should provide enough air to circulate into the roof space i have 4 whirly birds but like retrofisherman suggests maybe an open cap vent placed 1-2 feet below the whirly birds will help a little

[555gypsie]

wouldn't need them in England but thanks for the upload ive just realised what those things are seeing them abroad in hot countries