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Is solar roof ventilation worth the money?

Remarka6le
Experienced Contributor

Is solar roof ventilation worth the money?

So I've got that DIY itch again and one of the projects on my list is roof ventilation for the summer months, especially with our attic fully operational now. We have the tools and knowledge to get this project done, however what isn't settled is choosing between the traditional wind vents (which wife is advocating for) or the solar powered ones (I like new).

The issue I am facing is customer reviews, I have my eye on a couple of Ezylite solar vents but the reviews are just horrendous, research online is mixed with some people saying it's a scam, others saying it's fantastic. Has anyone in this community USED them, or know of anyone who has?

Would love some feedback before I pull the trigger on this one. 

Regards, 

Remarka6le 

Remarka6le
MitchellMc
Bunnings Team Member
Bunnings Team Member

Re: Solar Roof Ventilation - Worth the money?

Hi @Remarka6le,

 

I think the best place to start would be by considering the benefits and downsides of both options. Solar is great when the sun is out, and traditional wind-powered vents are great when there is a breeze. Conversely, if there is no sun the solar vent doesn't work and if there is no breeze, the wind-powered vent doesn't work.

 

Let's take a look at airflow. The solar vent moves 400 cubic feet per minute, and a wind-powered vent moves (on average) 58 cubic feet per minute with a 12km/h breeze. We can see that the powered fan has a much higher airflow. You might like to look at the Bradford 250mm Airomatic Smart Roof Vent. It is a mains-powered unit but has a capacity of 647 CFM. Due to the high CFM there can be an audible noise from the fan when it's working to full capacity, but that's to be expected when moving that much air.

 

It would be my recommendation to go for the Airomatic unit. Just be aware that installing two in the same roof cavity will likely cause them to work against each other. You might, in fact, be better off with just one unit and installing air vents in the eaves. This allows the unit to suck out hot air whilst drawing in cooler air from the vents.

 

Please let me know if you have any questions.

 

Mitchell

 

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lukec
New Contributor

Re: Is solar roof ventilation worth the money?

@Remarka6le 

 

I know this question is a few weeks old but thought I would put a response here all the same for anyone else wanting to ask the same question. 

 

I went through the same process for a house we recently bought in Brisbane and in the end, we opted for the Bradford units that Mitchel has mentioned. 

 

They come with multiple speed settings, low medium and high from memory, as well as an auto setting. At the higher settings they move a lot of air and I can feel a reasonable drop in temperature during the warmer months. Our house has a tin roof and no insulation so for us this has been particularly useful to bridge the gap until we get it installed.

 

Its worth noting that if you haven't already done so, you will need to install eaves vents to allow for the increased airflow. Also, as Mitchel has mentioned, there is noise that comes with this. I have pretty sensitive hearing and can hear them at night, however in the day they generally get lost in the background ambient noise of general life, whereas my wife doesn't notice them at all. I'm anticipating that we won't be able to hear them once the insulation is installed. 

 

In summary, for us, the cooling they've provided in the hotter months has outweighed the noise they generate. I'm pleased with the quality of them and expect them to last for quite a while but again, if low level droning noises might be an issue for you (as it does for some on the internet), this might not be the best for you. 

Remarka6le
Experienced Contributor

Re: Is solar roof ventilation worth the money?

At this stage, I've purchased a single Bradford. We've already got vets installed in the eaves so that won't be an issue. Our house has a significant amount of insulation and will be installing the unit above our primary Attic space so the Bradford Unit can act as a sky light during day time hours. 

We're currently investigating options surrounding the speed controller so that we can control the speed (and ultimately turn the unit on or off) from the laundry if it's too noisy or not needed at the time. 

Remarka6le
MitchellMc
Bunnings Team Member
Bunnings Team Member

Re: Is solar roof ventilation worth the money?

Welcome to the Bunnings Workshop community @lukec. It's brilliant to have you join us, and many thanks for sharing your feedback.

 

It's always great to hear first-hand experience with a product. I trust your feedback with be exceptionally valuable for anyone considering installing the same unit. I'm glad it's made such a significant improvement to your home.

 

I am looking forward to hearing more about the projects and plans you have around the home or garden. Please let us know anytime you need assistance or have something to share with the community.

Mitchell
 

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