Do whirlybirds work with no wind?

Do ceiling Whirlybirds work?

There is very little air movement in a ceiling space, as any poor sucker who ends up in one can tell you. I’ve been up in them quite a few times building or renovating houses. Air doesn’t move, and even being inches from a whirlybird opening, you can barely feel air movement. citizen_smith writes… Yes, I installed them and they do work.

Why don’t Whirlybirds use the air from the ceiling?

Whirlybirds can’t possibly recycle the large mass of air in the ceiling cavity fast enough to stop it heating up. And if you live in an area where the outside air is just as hot, bringing in hot air to replace hot air doesn’t really help much.

Do Whirlybirds help with hot air in bath rooms?

Whirlys can help if the living space is directly ventilated by the roof ventilator and that there is a fresh inflow of cooler air to replace it e.g. garage/shed roof or cathedral ceiling ducted to atmosphere. I cant help to think that these whirlybirds help to expel all the hot air moisture from the bath rooms as well?

Do whirlybird vents work well?

It work well if you have the vents under eave. That where whirlybird draw fresh air into roof cavity then draw out.

Do Whirlybirds work in unairconditioned rooms?

In an unairconditioned space the addition of some vents in the ceiling under the whirlybirds can also put them to excellent use (closeable vents) excellent reply mate. I never bought the Whirlybirds in an intention to cool the house. The main purpose was to vent out moisture.

Why don’t Whirlybirds use the heat from the ceiling?

Terrible heat. Whirlybirds can’t possibly recycle the large mass of air in the ceiling cavity fast enough to stop it heating up. And if you live in an area where the outside air is just as hot, bringing in hot air to replace hot air doesn’t really help much.

How do I keep my house cool with Whirlybirds?

My interest is whirlybirds supplemented with whole of house fan/s. Try vents into your underfloor cavity. The air under there is cool as, and as the hot air escapes via the roof and whirlybirds, the cool air is sucked into your house.

Can I put a Whirly Bird on my attic vent?

The wost thing you can do is install more then one whirley bird on a roof as they will cause cross venting. Re: Attic Ventillation. Roof vents vs Whirly birds. Agree, soffit vents with ridge vent is the way to go.

Can a whirlybird cool the whole house?

Radiant heat does, that’s what insulation is for. They are there to release hot air trapped inside to help cool down the roof hence your ceiling would not be that hot. I am not looking at the Whirlybird as some sort of cool down the entire house. Whirlybirds don’t cool the airspace, because, again, they don’t move enough air to do so.

How do you vent a Whirly Bird in an attic?

In theory, you can install a whirly bird near the top ridge that can vent the attic space. But you do need an inflow of air into the attic to replace the hot air that rises to the top of the attic. So, when you pull the attic stairs down, this will allow this inflow of air.

Do Whirlybirds really cool your home?

Whirly birds do not do any cooling. That means they will not lower the temperature and more than the ambient. They just ventilate. But ventilation is better than no ventilation and if installed correctly, they can provide airflow (sucking in cooler air and expelling warmer air). The theory of how whirlybirds work

Do whirly birds on roofs keep roofs cool?

There are a lot of whirly birds on Sydney roofs looking like it keeps roofs cooler. But its effectiveness depends on how they are installed. HOME ABOUT US SERVICES CONTACT SITE CONTENTS – Sydney Roof Repairs How effective is a whirly bird at cooling the roof?

What are the benefits of a Whirly Bird House?

It also quietened the house a lot. So the whirly birds may have a minor effect on inhouse temperature, but the main benefit is a well ventilated roof space. There are a number of places where the inhouse air is free to enter the roof space — as through the fridge chimney, trapdoor vents, recessed lighting, and bathroom fan.

How many whirly birds can I put on a roof?

The wost thing you can do is install more then one whirley bird on a roof as they will cause cross venting. Re: Attic Ventillation. Roof vents vs Whirly birds.

Are birded roofs cooler?

Jason68, who has seen many roofs has told you that in general, birded roofs are cooler than no birded roofs. And people don’t live in their roof. The heat transfer from the hot air to the ceiling/living space is negligible. Air holds bugger all heat, and can’t move that heat effectively downwards.

Do whirly birds cool the room?

Whirly birds do not do any cooling. That means they will not lower the temperature and more than the ambient. They just ventilate. But ventilation is better than no ventilation and if installed correctly, they can provide airflow (sucking in cooler air and expelling warmer air).

How many Whirlybirds do I need for my roof?

“General rule of thumb is 1 Whirlybird for every 50m2 of roof void space. (For Published Install Prices in Sydney – Click Here) Average example is for a 2-3 bedroom house you’ll need approximately 2 roof vents. For a 3-4 bedroom house – 3 roof vents and for a 4-5 bedroom house – 4 roof vents.

Where to place whirlybirds on the roof?

Don’t know if there’s more to it, but logic would suggest putting the whirlybirds as high as you can on the roof, nearest the peaks. When I first moved into my house in the 70’s, there was a lot to do.

Do Whirly Bird roof vents work?

Roof vents wree often used but whirly birds are a recent thing and have a higher extraction rate. There are better methods also. Get your roof painted in a heat reflecting paint. Roof space ventilation is a good thing anyway, irrespective of the cooling aspect. sempai68 writes… kevvy2003 writes…It work well if you have the vents under eave.

Do you have whirlybirds on your iron roof?

In our current iron roof home, without whirlybirds, even meadiocre days it was dammed hot up there. Now, with two birds, (we have the ones with the fan blade addition) I can work up there in much more comfort. Even on windless days, they spin due to the warm air rising up out of the roofspace.

Do you use a bird to cool your house?

Birds have been around since around the 1850’s apparently. Rynn writes… I merely point out that it doesn’t help cool your house to any appreciable degree. In your opinion only…This is completely subjective, some people may consider 1 degree or even .5 degree appreciable. You seem to be absolutely stuck on screaming about how they do move air.

Can a whirlybird stop a house from heating up?

Air is a good insulator, so heat from the roof won’t really make it to the ceiling, and then into the house, assuming the roof cavity is big enough, two of my rooms aren’t, they are exposed beam. Terrible heat. Whirlybirds can’t possibly recycle the large mass of air in the ceiling cavity fast enough to stop it heating up.

Do I need whirly birds on my roof?

Whirly Birds or any other type of roof space ventilation is only one part of the solution. bille1 writes… Whirly Birds or any other type of roof space ventilation is only one part of the solution. In a similar vein, and I think well within the topic, my home is very open, windows right around it.

How many Whirlybirds do I need for my house?

As the add says, one of these is equal to 4 whirlybirds!!!! Big roof area may need 2 units. We also find, that as a bonus, hot air is drawn out of the rooms in the house via exhaust fan openings in the bathrooms/toilets.

How many whirlybird roof vents do I Need?

How Many Roof Vents do I Need? “General rule of thumb is 1 Whirlybird for every 50m2 of roof void space. (For Published Install Prices in Sydney – Click Here) Average example is for a 2-3 bedroom house you’ll need approximately 2 roof vents.