And the sound of rain on a tin roof is fantastic

@craigshrimpton5765

2 ай бұрын

Nothing like laying in bed on a cold rainy night listening to the rain. Almost as good as sex.

@Froggability

2 ай бұрын

Er without insulation too loud, clay tiles so much quieter

@craigshrimpton5765

2 ай бұрын

@@Froggability We have ceiling insulation with a higher R factor number than wall insulation.

@wazblind

2 ай бұрын

I love the sound of rain on a metal roof. Listening to it right now actually.

@H2kfighter

2 ай бұрын

as someone who sleeps in a iron shed, imma take that as sarcasm. so loud cant hear anything else

My grandfather put a metal roof on his house in 1946. (This is the US). It is now 2024. The same roof installed in 1946 is still there and hasn't had a single leak in the past 78 years. I'm in that house right now typing this. If this roof lasts until 2046 I wouldn't be surprised. All we do is paint it occasionally.

@SteveWithers

2 ай бұрын

Yep. Keep the rust away and the roof should last as long as the wood that holds it up.

@linmal2242

2 ай бұрын

@@SteveWithers Well the modern roof sheeting has excellent coating systems much improved since 1946 !

@uncletiggermclaren7592

2 ай бұрын

@@linmal2242 The problem with the modern stuff is it is so thin and the coating is so thin. It SEEMS better, but it is extremely easy to scratch the coating while installing it, compared to the older iron, which usually came as bare steel and you painted it as soon as you installed it. So people have a modern "colour steel" roof and think it will be fine, and it rusts through in a tenth of the time of the older, thicker steel.

@TaylerMade

2 ай бұрын

@@uncletiggermclaren7592 galvanised iron is a fraction of the thickness it once was. we have a galvanised fence erected in the 50's and it is still good. but it is so much thicker and stronger than the new stuff.

@uncletiggermclaren7592

2 ай бұрын

@@TaylerMade Oh yeah it was thicker, like three times as thick. My family have owned scrap metal yards since 1964. Quite a few times when I was a child, we scrapped whole industrial buildings, off sites so new buildings could be built. I remember a couple of times we got corrugated roofing off buildings, that had painted trademarks and batch numbers on the underside of it from the 1850s "Made in Sheffield, G.B." sort of thing. I remember quite well, because we had two old guys worked for us on light duties, and my twin and I used to be "cheeky" by carrying anything we found that had old trademarks on it, and ask them "Look, this is something you might have made, when you were young !". I think that sort of steel production for large sheets of steel didn't get underway here in New Zealand until the 20th century. They used to import the sheets, and roll them here.

I was a licensed builder on the east coast of Florida - hurricane alley - for 30 years (then an LBP in NZ for almost 20 years). I lived on the beach and had many opportunities to inspect and repair hurricane damaged roofs. After the worst hurricanes (about 1 - 2 per year) I would drive all up and down the beach to look at the hurricane damage. So in Florida, probably 90% of roofs are asphalt shingle, 8% are tile, and maybe 2% are metal. What I typically saw after a hurricane: Almost all asphalt shingle roofs were stripped bare, and the ceilings were flooded with rain. Most of the tile roofs had lost a substantial amount of tiles, often only on one side of the roof. But NONE of the metal roofs suffered any damage at all. However, there is this to consider: In the US, all roofs are built with trusses or rafters at 600mm on center, then 5/8" plywood is nailed (and often glued as well) onto the roof, followed by waterproof roofing felt (black paper). For metal roofs, the metal is then placed directly on top of the plywood + felt and screwed at a pattern specified in the Building Code. It's guaranteed for 50 years.

In Alaska, metal roofs are expensive, but they are considered premium. A pro and con is that snow slides off them. This prevents heavy snow loads on your house, but also creates safety concerns. The other major pro is that asphalt tiles catch fire pretty easily from embers whereas metal does not. This is not a small feature for remote places. We have forest fires every year somewhere in the state.

@classicjonesy

2 ай бұрын

Interesting didn't think I'd learn anything reading the comments, but I've never been to the states (I am from NZ) lol.

@joshduthie3401

2 ай бұрын

Well, for whatever reason it's very cheap here. Sometimes even used as building cladding. Where I grew up basically every house used it, and plenty of farm sheds too.

@darrenmx

2 ай бұрын

In Oz it's closer to 100% metal roofs, and usually colorbond (which has a 30 year warranty, and more like 70 year+ lifespan) and bushfire resistant which matters for us! Honestly, Aussies don't understand why people would use shingles (tiles are fine too)

@VanillaMacaron551

2 ай бұрын

@@darrenmx I chose plain gal (silver) so it would reflect heat, with Colorbond guttering. A lot of people in Brisbane do the same. All the old steel roofs in the area were painted a standard red, but there's none left in my street now.

@xpusostomos

2 ай бұрын

I would imagine sliding is a function of the angle, but tiles on a sharp angle would be tricky

Another thing to consider is if you want to capture the water from the roof for drinking. Steel is great. Asphalt is poisonous.

@johngraham8893

3 ай бұрын

It takes at least 5mm of rain on a concrete tile roof before any water starts getting into the water tank.A metal roof you harvest every rain drop

@cccmmm1234

3 ай бұрын

Silicone spay sealing concrete makes it shed water better. It also helps prevent lichen. Also prevents tiles cracking in freezing weather.

@kadmow

2 ай бұрын

- yep, that is the Australian story too... Nowadays all rainwater installs tend to be flagged as "garden and grey water use only". I have been so many places that without the rainwater tank, we'd all be dead - add a particulate and carbon filter - the best water around (avoid roofs with lead flashing or lead paint - Most tin (galv/zinc) ) roofs in Aussie never get painted (historically lead paint isn't great for drinking water) - colorbond lasts - a lifetime (until it doesn't, hopefully it is truly nontoxic) we all get thinner materials as the years go on, reducing useful life, better to go as heavy as is available..

@user-sp4gy7ko5l

2 ай бұрын

@@kadmow Good to know. Soon lots of home owners will be taking loans to buy a few sheets of tin..

Earthquakes earthquakes & earthquakes. So glad here in Christchurch when the earthquakes struck to have a corrugated iron roof. All those people with concrete of old clay ties with problems. Concrete tiles can be seen a lot on post WW2 houses. The house next door, now gone, was a concrete house with concrete tiles - post WW2 material shortages.

@petercroft9895

3 ай бұрын

It's bizarre, because I saw loads of concrete tile roofs at the time that had jumped ship, but ours remained completely intact - we had about 15 tiles jiggle down a few cm, but that was it. I thought the builders back in the 70s had done a bit of a $hit job only wiring every fourth tile down, but from what I saw on other places, that was actually extremely diligent

@Muritaipet

3 ай бұрын

Yup, that's what I wanted to say. I'd add that older people, who I suspect are the main house builders, have seen more earthquakes and the results.

@Battleneter

2 ай бұрын

Concrete tile was still very common on new builds until about the mid 2000's, here in the top part of Shirley (technically Marshlands) probably 60% are concrete tile built in the mid 2000's. The roofs held up very well, not aware of any rebuilds, and didn't see any roofing work post quakes. Most of the 1950's state houses in different suburbs also seemed to do pretty well, but I remember seeing roof damage in some T3 areas, Linwood, Woolston, Aranui etc.

@P-Bee

2 ай бұрын

@@petercroft9895 You can't beat a well built house. We were living in a Rimu framed, brick clad, concrete tiled house during the Chch earthquakes. The house was built in the 60s and the original owner had the builders go the extra mile. Every pile was double wired to the floor beams. The bricks were hollow with rebar through them and every tile was wired on. The chimney was short and fat. Nothing moved or failed on that house.

@dazaspc

Ай бұрын

We had those in Australia as well. You could always tell an Austerity built home as they used fewer beams, frames, etc for the roof. They always had characteristic dips along the peaks. Most if not all by now have been replaced. Concrete tiles were a thing in Australia from the 60's untill the late 70's when homes were still being made from double brick. I had a home with them and would never get another due to the dust in the roof space and the fragility and need to repoint. Premium builds got terracotta tiles that were much better durability wise and were a lot lighter. Most people went for steel.

As a sparky that does Solar in NZ, I'm so glad most of our roofs are either corrugated or trapezoidal. Concrete tile is an absolute pain

@adamali2886

3 ай бұрын

what happens when there is no sun

@greywolf7422

3 ай бұрын

@@adamali2886 People tend to sleep at night mate, the people living next to where I live had solar installed, they ran most of their electrical intensive amenities during the day, and anyway most people installing solar do it for the compounding savings they will receive from a private tributary power supply and if one is in necessitative need of power at night, getting a battery will help with that.

@robertmccabe8632

3 ай бұрын

Iron works. 25+ years minimum .55 mm thick.

@astondriver

3 ай бұрын

​@@greywolf7422we have solar installed to ensure continuity of supply. We have 3 freezers, 2 fridges. Home kill and wild game plus vege garden.

@H2kfighter

3 ай бұрын

as a roofer, i hate you. 🤣🤣

And one big benefit of the corrugated metal roof is the quality of the rain water is cleaner and the best for drinking water.

Concrete tile rooves are heavier as discussed, therefor requiring more battens rafters/trusses and bigger lintels. But the other reason they are specified less is because NZ has increased the earthquake demands on all buildings. Its hard to get enough bracing in the walls to hold the building up in an EQ.

@sunjamrblues

2 ай бұрын

Engineered trusses can easily handle the weight of tiles. Just wrap the roof and exterior walls in 12 mm plywood, like all US houses. Using gib for bracing is stupid beyond belief.

@bradleylong3230

2 ай бұрын

​​@@sunjamrblues The problem is not the extra structure to hold the concrete tiles up, it's because an earthquake causes the building to shift. The tiles add a lot of mass high in the home and an earthquake the bottom and top of the building will move relative to each other. The greater that roof mass is the more force it takes to accelerate and decelerate. Imagine holding a sledgehammer perfectly straight up and having to move it side to side without dropping it. You can definitely do it, but the structure of the house has to be much sturdier to handle the side loads and thus more expensive than it would otherwise need to be. A lighter roof is an overall much more cost effective choice, even if the concrete has a long service lifespan.

@sunjamrblues

2 ай бұрын

@@bradleylong3230 Same situation in California and Oregon, which regularly get earthquakes. Standard practice throughout earthquake zones in North and South America: Studs are at 400 o.c., trusses at 600 o.c., walls and roof all covered in 12mm plywood, then the cladding or roofing goes on top of the plywood. The trusses are tied to the concrete footings by a series of various straps, or even by cables. That's why when you see a video of tornado damage, a few houses in the midst of it all remain undamaged. Those are the newer houses, built with proper strapping and fasteners. The older houses were built similar to NZ, and they don't survive.

It's the same in Australia. My corrugated galvanised steel roof is 113 years old. Lightweight means a very simple roof frame. And it's inexpensive and so easy to work with. Never have to worry about cracked tiles in a hail storm either.

@dazaspc

Ай бұрын

I would be VERY surprised if you still had the original roof material. 60 years at best unpainted. My home to was built before federation and has had a new corrugated iron roof fitted in the 60's. My father showed me the pictures of it before replacement and it had rusted through the galv in many areas. Mostly due to lime mortar used to build the chimneys. You can easily tell by the thickness of the steel.

@cool386vintagetechnology6

Ай бұрын

@@dazaspc It has the original style Lysaght stampings underneath; slot headed screws with lead washers, painted (though now very faded), and I'm 80km from the coast. Plus, my neighbour who's known the house since 1931 told me it's all original. There are a few small rust holes which I block up with silicone as they appear, but it still has a long way to go. I've just had 30 years out of my galvanised rainwater tank, and that I do have to replace.

@dazaspc

Ай бұрын

@@cool386vintagetechnology6 So it hasnt been exposed for many years or are you refering to stamped steel ceilings? Mine was made from Wattle and Daub still in ok condition.

@cool386vintagetechnology6

Ай бұрын

@@dazaspc it's the exterior roof.

Realistically the most important thing that drove this is quick and easy installation. Most average houses in NZ are built before they're sold. The future owner has no word in what materials are used. It is in the builders' best interest to get houses done quicker, cheaper and get to market faster. Of course, that doesn't mean that this video is incorrect, just wanted to point out a significant business factor that I think plays a lot bigger role in this than the benefits of the material themselves. Especially in the past 10-15 years, when NZ population grew by about 25% and there simply weren't enough builders and houses to keep up with the demand.

@Jonathan2x6

2 ай бұрын

hit the nail on the head 😉

Reading peoples responses has been very interesting, but my preference for steel rooves is fairly prosaic. I just enjoy listening to the rain hitting the roof.

@TheShortStory

3 ай бұрын

That’s exactly the reason I don’t like metal roofs: too loud when it rains, hails or birds decide to have a party on top of it

@Etacovda63

2 ай бұрын

Sounds like you’ve only been in old badly insulated houses. It has to be completely pouring down before youll even hear the rain, let alone have it interrupting conversation in a reasonably insulated house.

@kadmow

2 ай бұрын

@@TheShortStory (anticon insulation sorts that out...)

@shadowbanned5164

2 ай бұрын

@@TheShortStory As people have mentioned ceiling insulation nullifies bird noise and reduces rain noise to a pleasant background noise...Hail is still pretty loud though.

Earth quakes are the main reason why metal roofs are used mostly. Concrete tiles are more dangerous in an earthquake

@brad9529

2 ай бұрын

Very true, I never thought about that

@andrzejd5301

2 ай бұрын

the same reason why most home were made from timber not brick

@VanillaMacaron551

2 ай бұрын

We love steel roofs in Oz too, and we don't have earthquakes like you guys do.

@marklewis9067

2 ай бұрын

incorrect

@xpusostomos

2 ай бұрын

​@@VanillaMacaron551but we love tiles also

With butol roofs we fixed the movement issue by gluing a silicon backed tape over all the joins on the plywood before laying that way the butol had a bit more freedom to move, this is from a roofer in nz

Most house in Australia also now have colour bond roofs, including my house! They are safer and stronger and last well, longer than I'll live.

@shadowbanned5164

2 ай бұрын

They are cheaper and quicker to repair as well if storm damage happens.

@paulsandford3345

2 ай бұрын

@@shadowbanned5164 , yep!

If you're thinking of building or re-roofing your house in NZ and installing solar, we love long run metal roofs.

As an NZ homeowner I always go metal because I get up on my roof for maintenance work and metal is safe for walking on..No problem water blasting it either or painting it.

One reason is that metal roofing is considered a light roof which makes it easier and cheaper to design the trusses.

I am Canadian and a roofer and I will only cover my buildings with metal unless it is a greenhouse. Shingles have far too many seams and it just does not last like metal does. I look for thicker metal with a baked on paint. that keeps the rust and dents away. One important difference in NZ is also that so many people use rain water cisterns while here in Canada we often drill wells. Collecting rainwater from an asphalt roof is disgusting. Metal is good though

I have a lot of experience with asphalt shingles in Canada where they are used almost exclusively. I think that you have to be out of your mind to use asphalt shingles in NZ. 1. Proper installation cannot be assumed, especially when many NZ roofs are irregular and the guys nailing the shingles are low on the construction trade ladder (always, everwhere) . And you can't see what they are doing. (a) Besides what do you know about what is a proper job? (b) Assuming that the roofer- boss is competent and honest. 2. I don't know what NZ UV will do to them, but I do know what wind will do. The shingles will lift off. Does NZ have heavy wind? How heavy? How often? See also point #1, above. 3. Shingle roofs need to be replaced periodically. They rarely last the estimated life. Roofing over them is OK, but will reduce the life of the new layer. (Will your roof (in NZ made of those thin sticks) take the added weight?) You can't put on a third layer; you need to strip the roof. More work, dumping fees, lots of expense. And you still will have only a temporary asphalt shingle roof. (4) Asphalt shingles is a new material in NZ How long did it take NZ to figure out the changes in construction code and materials that resulted in an epidemic of leaky houses and commercial buildings?

Was going to replace to concrete tiles with a metal roof. They were never looked after. I might also redo the fences around the property with metal as well like is popular in Australia. It's just so much less maintenance.

Fascinating video! We moved around a lot in the 80's and lived in various houses in various states of disrepair. The concrete roofed houses we lived in ALWAYS leaked because the owners would not maintain the house - I have vivid memories of having buckets and pots around the house to collect the water and being really embarrassed when friends came over and our house was leaking.

I think the Canterbury earthquakes had a hand in the reduction of concrete tile rooves.

@biggest23

22 күн бұрын

Also on roofs.

@stevedunlop9623

20 күн бұрын

@@biggest23 Bugger! Thanks for the spell check!

@biggest23

20 күн бұрын

@@stevedunlop9623 ….No worries brother, we’re all in this cultural maintenance routine together mate.

I was swayed by my builder 20 years ago to go with concrete tiles and boy do I regret that now. Every time the gutters need cleaning a bloody tile gets broken and needs to be replaced. Something else I didn't consider was that a tin roof makes your home more *secure* that a concrete tile one. Takes less than a minute once on the roof to lift a couple of tiles (they only secure every second row) and you are into the house. Not so easy or quite with corrugated iron.

@dzhiurgis

3 ай бұрын

Depends on tile. I'm 110kg an never broke one.

@DavidLee-cw6ci

3 ай бұрын

I have never ever ever heard of a house getting robbed by an intruder removing roof tiles. Talk about imaginary problems.

@ChristianWagner888

3 ай бұрын

​@@DavidLee-cw6ci "5 Tactics of Rooftop Burglars and how to stop them Recently there has been an increased volume of residential and business break ins via roofs. Many roofs have become the weakest point-of-entry and burglars are taking advantage of this at both business and residential premises. After gaining access to the inside of the roof, the burglars frequently locate the alarm system by following cables in the roof and then proceed to rip out or cut all cables to disable the alarm system. " August 15, 2022 Security Notices

@newolde1

3 ай бұрын

​@@DavidLee-cw6ciwell I guess now the gig is up. Watch out, I'm coming in like Kris Kringle, minus the chimney.

@critical_always

3 ай бұрын

And added bonus is the gentle ear deafening pitter patter of rain on the iron roof. It's lovely, continue the conversation after the rain stops.

I have a few houses with a variety of roofing materials and have owned others and been responsible for larger residential apartment and commercial buildings over the years. They all have their pluses and minuses. The current houses are between forty and fifty years old. The iron roofs have required painting and attention to nails working up or tech screw isolators falling off, and the concrete ones repointing and the odd tile replacement- I haven't bothered to paint them as I consider it primarily cosmetic. I think both are good as long as they are done properly and with good quality products at the beginning, and then looked after. The good thing with concrete tiles is that they are immune to corrosion unlike iron roofs which I have seen corrode through from the back by the gutter and corrosion at the laps, as well as failure in the colour coating. The only metal roofing I would use if I was building would be the heavier gauge long run clipped (no penetrations) commercial stuff. It is thicker and very strong and doesn't buckle when you look at it like domestic iron sheet or tiles which are very thin these days. The penetrations caused by tech screws or nails in iron roofs have been the cause of most of my problems over the years as well as poor workmanship on flashings. Like everything there is no perfect system.

@steveperreira5850

3 ай бұрын

I enjoyed reading your comments. Steep roof of any kind will last longer. Nobody seems to talk about this. My house has 50 year asphalt shingle in a hot environment in California, but I have a steep roof and very well ventilated attic. The roof will last longer than that, longer than 50 years The early demise most asphalt shingle roof is in proper ventilation in the attic because of code violations when construction is done. Almost 100% of the time ventilation is not properly done. Cooks off the roof and the underlayment

@willhooke

2 ай бұрын

​@@steveperreira5850interesting In Australia we have nearly no asphalt roofing Nearly all concrete tiles or corrugated metal

@H2kfighter

2 ай бұрын

i feel like you overlooked the location of your buildings. are your rusty builds close to the ocean? sea winds carry salt that f steel up. you use aluminum sheets and flashings. and if your around rotorua ways geothermal shit is a thing too. ahhh perfection is obtainable just expensive

Notice how most or them are light in colour? Keeps the heat out during summer, lower electricity costs. Rain rolls right off it into water tanks or garden beds. Very durable and more secure from burglary. So many benefits.

I just replaced my concrete tiles on my 1940s state house…original tiles. I decided on getting terracotta tiles. It looks amazing! The house has a really steep pitch so I didn’t want to do colour steel, didn’t think it would look right. I also felt that terracotta gives your 100+yrs, natural product and no more expensive than colour steel. I’m surprised more people don’t get this on these houses designed to take the load of a heavy roof.

@HaggisPower

2 ай бұрын

Are they strong? I dread walking on concrete tiles...

@wawahweewah

2 ай бұрын

@@HaggisPower yup really strong. You could take them off after 80+ yes clean them and put them back on. The tiler had just done the whole Dunedin railway station and that’s what they did!!

very informative vid. thanks for sharing!

I live in NZ I have had “tin” roofs and concrete tile both. These are the most common types here. Steel is far superior. Concrete tiles are fine until the grouting and tiles start cracking. After 18-20 years in my experience.

Holy ! if this clips apprear 1 year before , it will greatly help my assignment works! Very informative, thanks for your explaination :D

Im in the UK, All my homes had slate tiles. Underneath them is a membrane and batons like you guys do for metal tile roofs. Definitely no plywood. Although our flat roofs have plywood or OSB usually covered by rubber, fibreglass or bitumen.

Growing up on the West Coast, Lockwood home with a metal roof. God I miss the sound of the rain on the roof, nothing makes me sleep better.

Long run stands up in storms and doesn’t catch ablaze with falling embers. I prefer standing seem myself.

I've got a long run metal roof in a small town in the Waikato. 1960s build, solid timbers, it survived a big earthquake in the 70s. I recently replaced the original lead-headed nails the roof was built with with screws, and it only cost me NZ$1,800, as far as I'm aware that's all the maintenance the roof has had in the past 60 years.

One of those things we have but never think about 😂 loving all this "sudden" kiwi content yt is recommending.

Very thorough but one type of roofing that is good but rare is cedar shake roofs. These can last 40-50 years and look amazing.

Concrete tile roofs performed very badly during the Christchurch earthquake. After that they slowly dropped in popularity in NZ

Kiwi living in Western Australia, almost exclusively here , (I would guess around 80%) builders use terracotta tiles on residential properties. Metal and other types are mostly used on commercial stuff and the more pricy , architecturally designed homes.

@waza987

3 ай бұрын

Similar in Sydney most are terracotta tiles, but starting to see more variety. I think long run metal is more common in remote areas because they are much lighter to transport so become more cost effective. Also a concern in areas like Sydney with frequent heavy storms is metal is very loud when it rains. We have to close doors when summer storms hit because although we have a terracotta roof, there is a metal roof on the back deck and the noise makes it hard to watch TV or even talk.

Good video Josh, always enjoy it

Great video. As for flat roofs a tpo membrane is better than butynol mostly because at the substrate joints you can double lap the tpo and weld the joints. I agree as a designer and quantity surveyor my preferred metal roof profiles are corrugated or the diamond profiles LT7 and BB900. Not a hurge fan tray roofs or 5 rib myself.

@mrbevan

3 ай бұрын

You don’t do that with TPO, or any roof membrane - laps and substrate sheets don’t align anyway. Double lapping? Yeah, not a thing.

@H2kfighter

2 ай бұрын

​@@mrbevan yeah i got no clue. the joins in the ply don't dictate where to lay but i would stay off a join if i could help it

I have a relatively low-pitched metal roof and it's starting rust at the overlaps. May have to replace it with some other material in the near future.

@bFORCe2003

3 ай бұрын

Ours is low pitched corrugated roof and its around 50 years old. We have replaced some sheets as they were getting rusty and painted it, should've painted it before to be honest. One of the biggest problems with metal roofs are new roofs rusting when they are nailed/screwed onto the roof as they rust by the screws. Need to paint the roof after they're installed even when replacing old sheets.

@hungthuynh402

3 ай бұрын

@@bFORCe2003better use some profile that allows the screws to be concealed

There not obsessed. It like Australia.. metal is cheaper.

Long run metal is also the best by far for mounting Solar Panels!

If you've been in a decent earthquake, you never forget the sound of heavy tiles rattling above you. Having experienced the Canterbury quakes, I will always prefer a single story weatherboard house, with longrun roofing. Everything needs to be able to flex and move without falling on the occupants.

Here I thought it was Metal music they were referring to in the headline 😆 that’s probably true as well 🤘🏻

I find this video echos the trend in Australia. In Western Australia however, concrete tiles have been king for a very long time. Now with colourbond (metal) being popular due to price and ease of construction, I've noticed a decline in other roof types. Great video.

I feel like another reason why concrete tiles are a thing of the past now is earthquakes. Here in Christchurch a lot of houses had to have a lot more work done on them because of the damage caused by having a concrete tile roof. A lot of properties had concrete tiles pre-quake and then were retrofitted with metal roofs afterwards.

Hailing from the UK, slate tile roofs are common. Probably the the best roofing material? Can last in excess of 100 years with no maintenance.

Love your videos that explain construction methods!

Very interesting. We have a concrete tile roof & I had noticed all new houses have metal ones. We had a repair done recently & luckily we had a few spares as our roofer said they have all been sent up to the North Island. One thing you didn't mention was earthquakes. Here in Canterbury no one wants a heavy roof hence everyone going to metal.

I’ve recently done a few jobs with espan cladding for the actual house. It seems that metal materials are starting to become more popular period

Hi, i feel i need to jump in here and correct some misinformation... for clarity, i supply and install in Auckland Concrete, Clay ( you didn't mention), and slate. For lifespans of the roofing products you've mentioned lets go by what manufacturers are prepared to guarantee their product for with metal roofing guaranteed for the least and, in many cases, a third of the lifespan. The maintenance on metal roofing far exceeds that of the others. Concrete tiles do not require repainting. This is cosmetic only - no idea why you mention pitting etc. Slate does not require ply sheeting - it is the same as Concrete and clay .. underlay and battens. The meterage rates you have mentioned are generally off. And to be honest if metal roofing is that per m2 i clearly need to get my drill out .......

@steveperreira5850

3 ай бұрын

I’m glad somebody came in here and defended slate and concrete. Done right, by design and also by installation, there should be no underlayment required. Go to Switzerland and check it out, buildings that are hundreds of years old with large slate format. In the USA where I am at, the premature demise of asphalt shingle is overheating because of improper and in adequate attic ventilation below. It is almost never done right. And the inspectors don’t check it out properly.

Funny, in South Africa these metal roofs, we call them ‘sinkplaat’ roofs, have been used forever and especially on farm houses.

@dubplateriddim

3 ай бұрын

Zinc plate?

@frikkied2638

3 ай бұрын

@@dubplateriddim yes

Out here in rural Canada tin rooves have become much more common. They're loud but very durable. Won't go back to asphalt

@blackterminal

3 ай бұрын

Loud? How can you not love the sound of rain?

@dzhiurgis

3 ай бұрын

@@blackterminal I've got concrete tiles and love how quiet it is.

@duster8100

3 ай бұрын

East coast of Oz and it is rare to see a new build done tiles. Colour Bond metal roofs need zero maintenance as a rule and are so quite you have to look outside to see if it is raining. Old corrugated iron rooves were noisy but using modern installation methods have fixed that problem.

@blackterminal

3 ай бұрын

@@duster8100 myself I like noisy rain on the roof.

@newolde1

3 ай бұрын

Yeah it's really about the install, have to put rubber down between the metal and the joists or you get resonance issues. Also depends a bit on the guage and type.

I’d love you to address the acoustic features of all these products. I love the sound of rain on the roof but I’ve also enjoyed complete acoustic dampening.

Be sure to put an insulation blanket under a metal roof to help reduce expansion / contraction noise.

Less Chance of leaks and adds some strength to the building. During the Abbotsford Slip near Dunedun, some new houses hanging over the slip were held together by the long-run iron.

Metal for me because fire will only mean needing to waterblast and paint assuming a fire proof situation under it. For cladding same again or fibrecement. Rockwool under both and steel supports, not timber. Timber only under the rockwool. Context, adjacent to Northland forest/bush. Only a matter of time before a fire comes through. Insurance doesn't replace irreplaceable personal items...

I love metals roofs in Australia - especially the different colours than simply ironstone

There are some metal roofs in the UK that I know of that an architect came up with in Bromsgrove, near Birmingham. When there's torrential rain, or especially when it hails, the sound inside the house is deafening, according to one of the homeowners that I spoke to about them.

@RyanYoxo

3 ай бұрын

I bet it would be. At least it won’t crack with hail

@newolde1

3 ай бұрын

Probably because they were installed straight on the joists without dampers. Metal will be a few decibels louder than asphalt or tile, but it can be mitigated within reason if it's installed well. Also depends on the type and guage. Standing seam is superior all the way around, but is more expensive of course.

@critical_always

3 ай бұрын

@@newolde1 Yeah but he's talking about New Zealand. Nothing get's done well in this country. Everything is quick and easy. Next year the company you dealt with is long gone because. Nothing is anyones fault in NZ

@newolde1

3 ай бұрын

@@critical_always well the name fits.. 🤣

@chrisjeremy9797

2 ай бұрын

That's the best part about it. Growing up in Queensland and hearing the torrential rain on the corrugate roof was great!

I'm in San Francisco, California, but originally from Australia, and as well as the asphalt shingles, the other popular roof is chipboard panels covered with asphalt daubed over it. They are a total disgusting joke, because although newer fake shingles are more fire resistant, they aren't by any means, and both types are massive fire hazards as particle board and the plastic underlay explode like a bomb once a certain temperatures are reached.

Concrete tiles were still used in Auckland into the early 2000s at the least. I liked installing them much better than metal tiles that would get dented if you looked at them funny and were slippery in the rain.

Im an NZ chippie just subbd keep it up mate, nice vid

In Vancouver BC some houses have cedar shingle roofs. I had my roof redone last year with asphalt shingles. I did look into alternatives, but none were readily. available. ( Material ,trades, codes,)

i love the tray style roofing panels. living on a farm in nz with bush surround our house is safer if there was a fire and we have always collected water in 30000 litre concrete tanks.

Thanks for your insightful vid! My 30yr old house has a Colour Steel roof. A year ago i had a roof painter guy check it & his advice was to waterblast the lichen & moss off it & paint it which he did.... ($4000). Then a few months later i ended up having a small leak appear so checked by a roofer i'm told the entire ROOF IS SHOT, he showed me photos after they pulled some sections off the gable to identify the leak zone & the entire gable to flatter deck transition undercovering flashings have completely rusted away ... So i am facing a $30,000 full re-roof. If only the roof painter had said something huh!

As an Aussie most of our roofs are metal/ Colourbond too.

I prefer a roof that lats a 100 years with proper maintenance like concrete tiles, had mine for 35 years no issues. Leaky homes has caused lots of issues for NZ consumers customers as no one in NZ ever assumes responsibility builders, manufacturers, certifying agencies i.e local councils or government watching from the side.

Cost & reliability would be my explanation for the popularity of long-run roofing. With most roofing work being subcontracted for a fixed price the installer is aiming to fit the roof ASAP so they can achieve turnover, it is generally easier to see if shortcuts have been taken with a long-run roof while other roof types can look alright but have hidden problems. Various long-run designs with penetration features can have problems also which is why gable end or standard hip valley designs cause the least problems. Color steel is competitively priced although when the roof contractor adds 40% to the material & labor rates to the main builder who adds their margin to the customer as well you can see why expensive materials quickly become uneconomic for most house buyers. The Christchurch earthquake has made a major difference in concrete tile sales, I remember that 20 years ago there was a significant % of houses were built with concrete tiles however it is rare to see them installed now.

So many new builds around Auckland are being roofed with asphalt shingle, it will be the next era of leaking buildings. Also architects go crazy with shingle roof designs so they just increase the number of problem areas. I'm a roofing estimator and I think steel is simply the best choice for NZ. We get crazy heavy rains nowadays and tiles provide too many openings, shingles come unstuck so fast maybe because of our UV idk, membrane is crazy expensive.

Terrific video. 👏👏👏

Corrugated galvanized iron can be as cheep as $10 per metre brand new, I built my 7.5x7.5 5.2m high pole shed for $12k and both walls and roof are iron. Noisy in the rain though

I like our concrete tile as it means it never gets too hot in the attic

Hi Josh, hats off for your excellent construction videos, can you please make one video for the services connections ,power, water, gas, telecom ,drainage etc. and the process of getting the authority approvals and clearances for the same please .

Pretty much only use concrete or ceramic tiles here in the UK and I can confirm they last for a century without issues. A strong roof frame is needed, but that has the advantage of lasting longer. I have never lost a roof tile, even in hurricanes such as 1987. Having said that some concrete tiled roofs fail because they had previously held slates, which weigh less, and the roof frame couldnt handle concrete. I have no issue with metal tiles, I just dont see them much (At all) here. Sheet/Membrane roofs are only really used for flat areas and in my experience cant really take the pace.

@dallasfrost1996

Ай бұрын

Other than the cheap cost and ease of installation, another reason why metal roofs have become popular here in N.Z is due to earthquakes. We get quite a few of them throughout the country, and as you could imagine, concrete tiles in these situations can become a serious hazzard. Metal roofs are far less dangerous in earthquakes. This happens to also be the reason why we build wooden framed houses similarly to the U.S, they hold up to earthquakes better than concrete/brick houses (flexing versus cracking).

Just a small detail but slate tiles are fixed to battens like concrete tiles no substrate needed. 80% of the roofs I work on here in Cornwall UK are slate, these have 100 year lifespan and can last much longer.

a light roof also requires less bracing in the actual building than a heavy roof...for both wind and earthquake

it would take longer and probably cost as much to clad a roof in 18mm marine grade playwood as it would to do a metal roof, then the shingles go on after, timber is so much more expensive in nz than North america, same reason all house over there the walls are all cladded in chip board before the cladding and we just put up building paper and a few sheets of 7mm for bracing

Thanks. That was concise, informative and interesting.

My grandparents had a full length metal roof for 25 years here in the US. They'd have kept it longer, but a major windstorm tore off the roof. They are extremely durable. I'm not sure why the roof blew off, but it was installed in the 1970's, so perhaps the installation methods have improved?

Question: We will use a box 175 gutter and need to decide whether internal brackets or external ones. Internal will create a seamless look. External might have a technical advantage (more robust and better to clean). What do you think?

I can of a couple more reason's. Durability and low maintenance being number one. Our metal roof is over 50 years old. Had it resprayed and checked. Some of the old leadheads were replaced with tek screws. Also it was easy to remove the old gas fire. And it looks like new again. Other consideration is after the earthquakes. Houses with metal roofs had less weight up top and kept the frame together. Houses with tile tended to collapse or warped. Id say metal is superior in most cases. The only concern is high wind storms and we've had alot in our region. But it did survive but is still a concern for me. Other being heavy rain cause of the noise. We can barely talk in our house when it rains heavily. Which we never got with a tile or the flat roof home. Also the noise of light planes and helicopters. Seem to be even worse under a steel roof. If we had more noise insulation maybe it would be perfect.

New Zealand also thought non-thermally broken aluminium joinery was a great idea too. Double glazing means nothing if it's wrapped up in a big heat sink. Thankfully this has changed, but I've love to see a return to timber joinery. The Europeans still swear by timber, aluminium is their least preferred option and PVC is their standard offering. They know winter as much as anyone while the average kiwi is often found in substandard housing with a winter power bill that could make Bill Gates cry.

we use tin here in aus and i really like them. i think they look great and are really easy to do.

Great video mate. Re membrane pricing - more like $150-$180m2 depending on product and size/difficulty these days.

Traditionally English homes in NZ were clay tile which were never recommended for homes 200km from the coastline as they dont handle the salty erosion.

Metal roofing is also rolled locally from NZ made steel. That appeals to customers and makes it easier for suppliers to customise, offer a broad range of styles and supply in good time. It's pretty disappointing to see imported asphalt on so many new builds when it's inferior to the local product. Style over substance.

i prefer metal roofs, better waterproofing... but with all new housing projects, it depends on design. sadly people are filling the whole blocks and use internal gutters that are difficult to waterproof if they arnt designed right. the idea of having an internal gutter just doesnt sit well with me long term.

Slate roofs do not need a substrate such as ply; often mount on battens (as per the interlock tiles at 5m) into which they are nailed. Historically were in effect a lightly ventilating roof with no membrane layers or ply though planking was used for bigger structures such as churches and cathedrals. A better system is the French "crochet" (hook) mount which if using stainless steel not only is extremely durable but enables rapid repairs in rare event of damage and age-related deterioration (repairing 140 + year old slate roofs with delaminating tiles or battens rotted/wormed needing replacement) or modifications such as installing roof lights or dormers. The advantage the crochet fix has is prevents wind lift (and was introduced in the Western regions such as Brittany where wind exposure is very high) as hooks to base whereas nails fix at top. Very rapid tile fitment to battens with no fixings in effect; just tightly gripping metal clips. On remedial work not using nails and potentially damaging internal cladding etc from shocks from hammering can be important and stainless screws are not cost effective on price and labour compared to speed of the crochet method and ease of recycling. Personally advocated ,for extra strength on every roof that I built, to incorporate ply or planking for historic aesthetics sympathetic to the building and breather membranes but choice nonetheless remains use tantalized battens and stainless crochets and good Welsh slate for the best aesthetic and definitely good for at least 100 years; much more durable than anything else. Whereas the human eye likes minimalist aesthetics it lingers on fractals and curves. A slate clad roof built on a green timber pegged-oak traditional roof drying to add sumptuous curves is my favourite; strong, durable, aesthetics to die for.

We have metal roofs in PH made of galvanized iron/steel but they rust and develop holes or leaks easily, sometimes within 1 or 2 years. They don't look nice and grey like in NZ and they're usually covered with paint. Maybe that's the reason for the rusting?

The mandating of ever increasing insulation performance has eliminated a great deal of the earlier and massive noise disadvantage of steel roofs verses concrete tiles during moderate and heavy rain. You haven't touched on the big ventilation requirement differences/consequences (for skillion/flat roofs) between membrane/Asphalt and (some flat pan steel/copper roofing) and other more naturally vented roof claddings.

I don't like how NZ houses are being built now. They aren't! I have only seen town houses go up. Where we used to build 1 house on a section, now, there are 5 to 10 houses. It looks ugly. It looks 3rd world. We need to expand by creating new suburbs.

Hi Josh, We live in Christchurch , 1950s timber framed house with concrete roof tiles and red brick veneer cladding. We are in the middle of dealing with EQC, engineering report says becase of ground condition the perimeter concret foundation is inadequate to support the load on house. In terms of roof maintenance I have replaced a few concrete tiles over the years but what would you recommend in regard to getting rid of the moss and lichen on tiles and waterproofing the tiles? We cant afford to replace concrete tiles with a long run corrugated roof. Cheers

Asphalt roofs are flammable. At a certain temperature all the tar turns into a liquid inferno. When a blaze goes through a neighborhood it can just hop roof to roof and burn whole neighborhoods. The fact that is still used in areas prone to forest fires is a serious head scratcher. Unfortunately it is hard to break long standing building patterns.

Me watching this as they finish of our metal roofing here in Aus..

When you omit the plywood for shingles, the roof needs to be braced, interesting that this is preferred over plywood in NZ

I've had two houses with galvanized iron roofs only needing replacement after 100 years. I've not got much faith that the current metal roofs will last that long

What’s the minimum pitch fo metal roofs in New Zealand?

Because a Metal Roof will last a life time, unlike Tiles which will last maybe 20 to 40 years before problems, with Tiles you can run into structural issues in modern times, Americans have no idea on roofing using their vinyl tiles. Look around Australia, there are buildings with Metal Roofs that have 100 year old steel roofs.

so is Aus, Colour Bond, I kick my self to this day I was recomended to use Cement Tiles they said it was cheaper as needed less bracing I thought really that cant be right? .... So hard to walk on, break when needing to do things eg Solar panels which are more expensive due to tiles and if one cracks you get leaks. Metal colourbond roofs just easy to work with, if one sheet get damaged (unlikely) just replace it and you dont have to worry about that Cement tile is no longer in production.