That thin slot vent is absolutely useless. Why? The mesh will quickly block with dust & crap. Which owner going to go up there and vacuum 🤔 frequently 😂

I beg to differ on some points about New South Wales: 1/ NSW allows unlicensed work under the $5000 threshold. 2/ this means that there are many unlicensed roofing repair businesses springing up in Sydney. They have a registered company but no licence. They do cowboy work. 3/ If you complain to Fair Trading about their work they did, the response is "you should have used a licensed business"so its on the customer, not the unlicensed roofing business because the $5000 threshold is higher than 99% of roof repairs and it is not a "protected" trade 4/ The customer needs to check on the credentials and cannot rely on glitzy websites and advertising.

Hi, I have the same Issue however the roof sheets on the pergola are the suntuff polycarbonate sheets. Same rules apply I assume? The sheets I have are clear so if I use silicone, I should seal the entire length?

That would be for a roof with silver sarking which is mot permeabke and mot a vapour permeable membrane. Yhis is because the conensayion gorm on the underside of yhe silversatking unlike a vapour permeable membeane where irs on th e bottom of yge tole which then goes into the gutter when it falls on the membrane. The heat in the toof cavity is radiant heat you cant ventilate radiant heat. Best yo go outside in the evening a spray water on your roofing material to remove the heat energy.

Legendary.

What's the reccomendation to get around asbestos eaves? Replace or can you put Eeave somewhere else

Well half the houses I see, especially 2 storeys, don't even have eaves. So good luck with placing the vents. We are worrying about roof ventialtion but allowing eaveless houses that need active cooling a lot more.

Very interesting. Thank you. So now I know that we have an original Trimdeck rook. Though we don't have a low pitch. I've seen the original Trimdeck used as siding at a stadium near us. But I do have an experience with our Trimdeck - we got new guttering and downpipes installed and durin the first storm after water poured into our ceiling space. My son and myself we up in the ceilimng space catching the water in buckets and handing ti down to the missus. To keep this short - it turned out that the downpipe installer had faced the pipe toward the Trimdeck at the join (04.35 on this video) and the water simply forced itself under the overlap and into the house. Very stressful.

I installed one for 2 reasons, I cut vents in the ceiling of 2 of my bedroom inside the sliding cupboards (always leaving open gaps on the sliding doors) and the window always slightly open. The first reason is to create air flow into the 2 rooms, as they both suffer from stale air and potential mold. The second is to take all the heat out of the roof... both have been achieved or at least had an impact on the issues we have...

Interesting how does it compare to the whirly bird. In price. Cheers Graham

Good video. Wouldn't the air simply pass through the ventilator and flow between the tiles and the sarking? Since hot air rises, I can't see it being drawn downward through the hole cut in the sarking. Given that each tile has small gaps underneath, I don't think this would have much of an impact.

I had three whirlybirds installed in my Penrith (zone 6) 1972 brick veneer cement tile roof prior to having the roof painted, which in itself was in preparation for the installation of my solar system only 7 years ago. They spin like crazy on hot days. The tiles themselves are laid directly in the rafters with no material underneath. Believe me, there is plenty of access for air to enter the ceiling space without having to add vents is the eaves. I have corner ceiling vents in all four corners of my kitchen, bathroom, and laundry (as was the building standard in 1972), and exhaust fans in each of those rooms, and air can (and does) enter the ceiling cavity above the guttering around my entire house. When in my ceiling, I see daylight entering around the entire gutter/roofline, and from in between the individual tiles.

I hear a bit of kiwi/South African accent

On the right track but i wouldn’t use that.

I completely agree with what you’re saying, Tradies are professionals in their own right as most need to have the mental aptitude intelligence and the eye-hand coordination to do a great job. And I do like your mindset about trades being classed as a white collar job. Through the previous generations, specially in school, becoming a trading has always Inferred that it was a lower class type of occupation.

Compared to what?

Good job. I think if you start mentioning parts of the related National Construction Code and Australian Standards to the areas where you find problems. That would make your videos stand out. Especially for building practitioners who are starting out in the industry.

They don't work at all.

remembering seeing ridge vent that replaces the ridge caps... slightly elevated at the highest point, not sure how these passive solutions deal with high humidity days though?

Any roofer that's cut a hole in a roof mid summer knows they work. Hot air bellows out of that hole like a hot aircon right into your face, hot air rises and the whirly bird itself Is just propelled by that hot air, which then draws more air in. It's basically a turbo for your roof, 10/10 do recommend

🤨

A great way to do a temporary repair, but insurance companies do not consider this a permanent repair and would not proceed with any other roof leak resulting damage repairs until the tile has been replaced.

No turnup under the edge that goes under the tile? That will leak straight onto sarking or into your ceiling

My house is 70s built concrete tile, i can see so much light under tiles in the roof space that I'm certain the whirly bird will work because it would be impossible to create a vacuum up there. Replacement air will definitely make its way in. That said, I'll endeavour to get eaves vents in eventually and compare temperatures

Remote rural off grid NSW here have uses whirly gigs for the past decade or so , solar and wind here have ventilated eves around the house am working an extension using packed earth tires atb ground level I have put in air-con ducting so the cold air gets drawn in and expelled out the roof outlets. In winter I will close them off. Before I go I invested in ecotech white paint for the roof bit pricey but on a 48 degree day the core of the main house is around 31 C , it works.

They do work, even if they’re not spinning or the bearings are siezed. Mount at the highest point of the roof. As soon as I cut the hole, very hot air flowed quickly out of the hole due to convection. Eave vents are a great idea to allow cooler air to enter. Some tiled roofs have enough airflow with the thin gaps between roof tiles and a whirly bird is a waste of money

Do internal toilet exhaust fans that vent to the roof space provide the relief air needed for the roof ventilators to work properly?

Great video

brilliant. people often ask a question, if you were sat next to someone on a long haul aeroplane flight, who would you choose to sit next to? Well, i have found (excluding Margot Robbie) my next best.

Shouldn't even get up on a roof without Spares!! Any decent roofer will be able to supply the Spares 😮

How about just supplying the tiles for the repair ?

Thank you for sharing this, it is very informative. We have concrete tiles for our roof, and because of the gaps and light that comes through at the eve, I had thought that we enough for air transfer. Would I be better off installing vents as well? It would not be hard to do, single story, new construction, so no asbestos. When I installed whirlybirds on our roof I did notice a drop in temp in the attic when I am there, but I am wondering if I am missing out on some of the air transfer by not having vents, and relying on the gap in the tiles.

You are correct about the ventilation needed for the birds, they won't suck a vacuum so can only suck as much air as they can get in to replace it. But I don't agree they don't work for a second. The old man put whirly birds in his house around 25ish years ago and they made a HUGE difference. We got some put in here about 4 months ago and the difference to the house (badly insulated) has been phenomenal. When 40c outside, our house was 50c inside before, now the portable aircon actually works in the lounge room for a first time. In saying that we have slotted eaves most of the way around so MANY places to drag air from (including the ceiling vents I'm putting in). We also made some other changes like shade cloth across the front verandah (north facing) to stop the concrete block heating up as if it had been a 40c day, that concrete pad was STILL too hot to walk on at 1130pm at night. Now it doesn't get the chance to heat up because the sun was blocked. We also made and installed shade cloth covers for windows (not just the screen but over the entire window) and we're slowly upgrading the roof from filthy yellow bats (house had a mice issue at some point before us) to R4.0 or R4.5 earthwool bats. Where this house today at 28c would have been 32-34c, it's only about 24c so a HUGE change to liveability.

Seems like even more reasons to not have a tile roof.

Nice demo

Be more interesting on how to join to existing roof whether corrugated or monoclad, stop the water pooling at the top of the installation for those on angle.

Great explanation of the problems of attaching things to roofs they were not designed to carry. Appreciate you sharing your knowledge.

Well presented 👍

Legend, thanks for sharing your knowledge and experience

I recently faced this dilemma but my issue is not leaves but sparrows nesting in the eaves and gaining access underneath the roof tile via the gutter. I had a sales pitch and quote from a gutter guard franchise but ended up using gutter brush from Bunnings as at least I can easily remove the 1m lengths as required to clean the gutters. That said, I’m now concerned about how the presence of the brush will affect gutter flow during heavy rainfall and will be on high alert ready to remove them if water isn’t hitting the downpipes fast enough. I think what I will end up doing when replacing gutters and installing fascia covers will be to also use drip flashing under the tiles to both protect the fascia board and also block most of the gap the sparrows enter via and then do away with the gutter brush also. Anyone else dealt with the bird problem?

I have them on my roof. Work well, no noise, no moving parts.

avoid low pitched roof and box gutter. Most tradesmen can’t make them water tight. Recipe for endless water infiltration problems Water diversion is more effective than water sealing.

Is 5° really enough for Corri? Philosophically

Also cap the ends

Dude! I watched the two examples together and you did not do the same thing AT All... At 2:37 Toes together and applying all your weight (more in fact because you clearly bounced - I saw your knees dip forward) directly on them - then at 4:47 then on the other sheet it almost bowed when your feet weren't together (they were spread apart) and to correct you splayed your toes out almost 180° from each other and you didn't put your weight on them. Another disingenuous video - KZbin is full of examples JUST like this. 👎🏼 Terrible, terrible video.

Kliplok etc, lower than 3 degrees of slope ?

Is your house brick? He does not seem to know brick houses in Australia draw the air from the bottom of the external walls not from the eve. Look around your house, if it’s brick there will be small slits all the way around. This is on purpose to prevent mould and damp in the walls.

Hmm. I think he’s overlooking the fact that most Aussie houses don’t have the vents in the eaves on purpose. They are at the bottom of the brick walls, evenly distributed around the house. The whirlybird draws air from closer to the ground and ventilate the external walls as well as the roof. Installing vents in the eaves will just stop the air drawing through the walls. They just look like small slits in the brickwork around the bottom of the external walls. Could be different in a non-brick house.

Good video, thanks. I’ve used epoxy resin for this and the tile repair is as strong as the original tile.

Bunnings used to sell (maybe they still do) a solar powered fan extractor which replaced a tile. I imagine a flat metal roof could use a waterproof low duct as a mount to raise the solar extractor above the roof. A flat roof could hold an appropriate number of the units to extract the hot air assuming there is enough solar load )not too many overshadowing problems)... otherwise a 12v motor could potentially be used, I guess.