That's very interesting. I suppose same danger for inhaling a lot of it. Rock isn't very biodegradable. Maybe slightly better than fiberglass though? It sure was fire resistant. Even proof. Edit: Just found this info: "The dust from rockwool can irritate the skin and eyes if a person comes into direct contact with it. Gloves and goggles should be worn when working with rockwool. This is why rockwool is not as harmful to breathe in as asbestos. Because rockwool fibers are short and thick, the body can easily expel them." Rockwool FTW!! Seems well worth the price.

@@terminalpsychosis8022 Nice info!

@@terminalpsychosis8022 rockwool is way safer then fiber glass it also produces far less fibers during install (to the point only dust masks are required for install), the benefits and completely fire proof good sound blocking and in is vapor permeable. it is costly

@@TDREXrx9 You gotta wear gloves too but otherwise yes.

Rockwool is used as steam pipe insulation. No question it's fireproof.

Great confirmation comment .. thank you.

Back when the Australian government actually acknowledged scientific evidence...oh how we miss those days 😅

You got it in one. The fire testing group is the only one surviving at North Ryde, NSW. The site had over 1200 in my day, now 20 or so. They are under threat still, hopefully building a new facility out near new international airport site

has austrialia gone very far in using sheeps wool as insulation? beyond 2000 did a bit on it a long time ago, i wondered if it'd ever make it here.

Wool is still available as a roof insulation as a blow in

Yea and it sucks when your the apprentice who has to go around and stuff and fire caulk it all.

how know not asbestos that grey wool looking stuff old 50's homes

Rock wool is a joy to handle and use It doest itch as bad as fiberglass

In Denmark its used for both residential and commercial. Its just a great product,

Think would prefer the old fiberglass insulation. Those foam sprays scary. Thanks Post. 👍👍

yeah, i was thinking of insulating the wall between my condo and the next with spray foam. Not going to do that now.

Or you read research on the topic and get proper information...

I agree! I was so excited about the new spray foam insulation, because it’s quicker to install.. but sounds like there’s a reason that we use what we use.

@@FuImaDragonlol you think if your wall catches fire the insulation will stop it or something? Y’all are so dumb.

Yep I second that. I wish I could hangout with this dude seems like a cool dude

@@Justme-jt1ef Yeah, I mean I would hang out with him because of vast interest/intelligence on different topics/subjects...

Same here! He's a cool, interesting dude.

Not all heroes ware capes, some just carry a camera and a rake.

@@Typhyr 👍

you are the safety inspector? That means a lot coming from you

LMAO FLORIDA

@@misanthropyunhinged I came to comment exactly that. Just saying Florida is a joke by itself. Hilarious.

Damn everyone here hating on Florida.

@@pipemasterplays Its as mismanaged as China. Look at the sink hole with acidic radioactive waste going into it like a water fall.

I had read this is the reason we cannot have plastic panelling in houses. It is too bad, too, because the plastic looks really nice in some settings.

How bout all the pvc trim and plastic board and fake siding full of glue? What about big heavy glue-lams held up by new growth spruce or engineered crap? Not a good setup for anybody, least of which firefighters

Locally, firefighters enter building in closed-circuit breathers. In modern buildings there is simply too much plastic and other materials that smoke and gases produced in fire are too toxic to take risks. It is not just carbon mono/dioxide etc. is in days long gone. You are entering space filled with cocktail of many chemical compounds that can poison you for the rest of your life.

Even worse, there's the vinyl floors, polyester fabrics in clothing and vinyl and fabrics in window coverings, polyurethane sponge in the furniture, mattresses and bedding along with nylon and polyester carpet and padding making a hazardous stew of toxic chemicals during fires. Polyisocyanurate solid board insulation performs well for fire resistance during fire exposure.

Pvc burns at 734f

yes.!!!!!

This is the reason firefighters use hooks and axes fire can hide just remember where there’s smoke there’s fire.

Up until 13:21 I was wondering what you were talking about... Yeah, that's pretty terrifying!

Nightmare fuel fr

Alot of them use propane as the propellant.. so you have a bunch of propane bubbles inside of the foam.

Same here in ours. It's not fun to work with that stuff though (i mostly used glass fiber from a few decades ago that we still had though, which was no fun to work with eighter)

@@xman7695 rock wool or basalt wool (the brown one) are better to work with than glass wool. Also, just make the building open for water wapor with vented facade and you get the most out of timber construction without being worried of condensation and mold.

And it’s a great sound insulator.

Euro

I loved how easy it was to install it.

I'm glad to see he's ignited, your intrest in residential construction.

lol then forget what you learned here and go look at the proper chemicals tests, nobodys can foaming a whole house

As a 40-year veteran of the fire service, thank you for the demonstration. But, the other consideration: when spray foam is applied, Sheetrock is then applied over the insulation. This limits the amount of air (ventilation/flow) which can enter the space and reduces the opportunity of fire spread. Leaving your test space open is not a true test of applicable conditions. While it is true that Fiberglas and rock wool insulation offer better safety from fire, in an open application, the spray foam may give you a higher R value for a lower cost, in a closed-space application. Might be worth another test. Especially if you can simulate an electrical short behind the Sheetrock. (And, of course, I just found your 2nd video on this same topic. Still, it how’s the wall space open, not closed up.)

@@CR-zh8xj 9

He burning great stuff foam out of a can, not closed cell spray foam which doesn't burn. Huge difference. This test is flawed.

D E A R G O D

"Previously, on the last Avatar, Post 10 drained a culvert, and today, he battles the Fire Of The Doors"

Isn't he a sparkie? He was always a lightning bender

Next he needs to bend air Bonus points if he starts doing metal, lighting, ice, and control someone from blood

Rake bender too haha

Na, spray foam is far superior and not the same as Great Stuff out of a can , this test is flawed.

@@Bigdoglittle Unless you live in a humid environment and your Air conditioner goes out and you can't get the part for a couple weeks because the shitty economy and your entire house becomes a breeding ground for micro organisms. Or if you have a small leak in your roof or wall that incubates rot. I've seen many spray foam jobs gone wrong. Never have I seen or heard anything wrong with rock wool. A far superior product.

@@Bigdoglittle exactly! Home insulation has boron (or something else Inert) added to it to make it less flammable. For just sealing windows and doors great stuff doesn't need it

@@bryansprecher As an electrician dealing with wires that are spray foamed is a pain in the ass.

@@Bigdoglittle I think your eyes and comprehension skills are flawed ...

Mythbusters looked like a REALLY fun place to work, just too bad it was in San Francisco.

@@txgunguy2766 why is that bad?

@@KDill29 look at his username. He’s a right wing nut, pissed that SF is insufficiently racist.

@@MegaBrokenstar lmao. True that homie

@@MegaBrokenstar "He’s a right wing nut, pissed that SF is insufficiently racist." Since when are guns racist?

Rockwool/Fiberglass as standard, barley ever with the paper though

If you use rockwool as wall / roof insulation, how thick do you insulate both? Cm?

Honestly rock wool I would pay for a good manufacturing to be made in the United States. The fact your recycle literal slag from metal manufacturing is smart. People who claim that the disadvantage is that it’s not biodegradable is stupid because when your building houses. You should build houses that last long periods of time if possible over hundreds of years old. Who ever thought that we shouldn’t use Rockwool as a standard is stupid because we should build homes with quality and have these houses as fire proof as possible. Foam I heard good things but this changed my mind because honestly. Every year state regulators often change policy for what is put into the material and as a product of that foam is now flammable… it’s because multiple reasons. 1. When first implemented into the market it had a slower application time because the chemicals used were less flammable. The chemicals that made it more expansive so that you can use less of the material which made it cheaper. It’s still the more expensive option… 2. It doesn’t matter if Rock wall to cover the walls because it will still eventually burn through that than reach the foam. That’s why I believe rock wool should expand their markets all honestly.

@@mrpumperknuckles1631 i think in this global recession its going to take a while before they would expand into the US. Our production costs here in Europe have skyrocketed due to diesel and electricity prices going to the moon, so construction business is suffering into next year. Im a professional who works alot with insulation and in two years time prices of rockwool has nearly doubled. Tho rockwool is very strong against fire it does eventually "get old" and cause extreme amounts of dust, and when you put your hand into 50 years old rockwool it breaks easily, but regardless of that fact. I think you get your moneys worth if something lasts for 50 years that at least should be cheap to buy in a normal environment with cheap electricity and diesel. But the best part about rockwool is not the fire resistance, no no.. its the noise cancelling and it keeps your house from leaking heat or taking in cold from outside. I onve built a small 10 square meter shed and used rockwool for it. It was 30 degree celsius outside but inside the shed it was 12 degree. I think these foams have more downside then rockwool so for me the choice is easy

Oh... Swedes are always sticklers for millimeter precision!

Urea is an oxidizer, pretty insane that they would use that as an insulation. Basically installing accelerant into homes!

Having a hard time finding exact details but by that logic it's not fireproof but does better then other types but it's still fuel for the fire.

its a retardant but it is not fireproof

@user… prove it by testing it on a section of your home. Don’t forget to film that for KZfaq!!

I can prove it because I did my research before buying so I know it works. I've tested it on open flame it lights but within seconds the flame dies. You should c02 and fire maybe you'll learn something too@@UTubePhoenix

So the small little itty bitty bubble bursts and lets loose a little itty bitty amount of CO2 “once” The fire continues.

Well, it is made of rock so…

@@jameslastname9171 so its rocksolid for the job.

Couldn't agree more! Sound proof your bathroom walls with this stuff and no one will hear that toilet flush!

As someone looking into houses I can fix and improve, this info just made the list. Thank you for the info.

Fiberglass has nearly the same STC rating as rockwool and costs a lot less.. plus it isn't made with formaldehyde binders..

Technically a backdraft

But yes fire science is fun

What region are you in?

Glass is essentially melted rock so he’s not wrong.

@@seeqr9 yep, rocks are made of silica while glass is also made of multiple types silica like borosilicate or pyrex which is a different silica compound. Also glass refers to when chemicals arent able to crystallize because of differentiating solubility keeping Crystal's from being able to form which usually ends up being perfectly clear with Lil impurities. All slag and all obsidian and all basalt is technically glass and rock wool is made from basalt specifically which is volcanic rock and Idk if you've noticed but volcanic rocks weigh nothing because their made of glass that's all puffed up like foam. Basalt refers to the foamy type glass from valcanos while obsidian refers to the very pure silica glass produced by valcanos. Also rock wool and fiber glass and asbestos all cause the same problem from breathing them in but the difference is that rock wool and fibre glass are made in a way that the fibres are at controlled thickness which keeps them from being as small as asbestos so u are less likely to die from glass fibre or rock wool but both rock wool and glass fibre are very equally bad for your body and both should be handled with gloves and when using rockwool for insulation in homes your supposed to use a face mask just like with glass fibre but when using rock wool in the garden you dont really need a face mask. Also rock wool has a much higher melting point then fibre glass and is made from naturally occurring minerals and silica while glass fibre is made from pure recycled glass so it's pure silica and is very inert while rock wool can contain random minerals and animals like rats are less likely to use rock wool for bedding or nests while they are very likely to use fibre glass because of it being inert and basically they cant tell it's not just fur while with rock wool it can smell funny and Harbor bacterias because of the natural minerals in it and volcanic rock is naturally good for bacteria because its rich in minerals that bacteria love!

I had some rockwool laying around in my carport after a remodel and field mice and birds made nests in it. When I went to clean it up, it broke down in pieces and made a huge mess..

@@seeqr9 he is really wrong. Mineral wool and fiberglass look and install similarly, but that is where it ends. There are huge differences in different kinds of rocks and huge differences in the qualities and performance of these to insulators.

@@seeqr9 All rocks started out as melted rock. More specifically though, the glasses are rocks that cool so fast, minerals do not crystallize separately. Because different minerals have different melting points (which also means "freezing" points when it goes from liquid to solid), the slower molten rock cools, the more time given for the different minerals to separate and crystallize out of molten solution, aggregate, and form microscopic and then visible crystals. This is why you can visibly see individual crystals in granite, but surface formed basalt has much smaller crystals, and you will see maybe the occasional isolated crystal in glass when looking at it with a microscope. Because granite is formed in huge formations underground where its heat is insulated and it can cool over thousands of years compared to surface lavas which can cool from nearly instantly to a few days.

This is why we tear up houses as much as we do even for small fires. Smoldering Hot spots can be hiding in so many little spaces and reignite hours later.

That's the reason why we firefighters do overhaul, we literally break open walls and check through thermals to find embers

Overe here it is common practice that two or more firefighters stay at site for a few hours afterwards in case something reignites

how tall are you? i heard northerners in Netherlands are crazy tall

@@lordjaashin 1meter95

@@JCZ2601NL impressive. you're literally as tall as a giant

Is it a common insulation material in NL?

@@eustache_dauger mineral wool and expanded polystyrene EPS insulation board are one of the most common insulations all around europe

Haha mine does that to

What a twist.

the electrical outlet is like I'm melting I'm melting

@@raven4k998 that outlet was also nowhere near the roxkwool

Neither does closed cell. This test is not accurate, he used Great Stuff out of a can.

foam can burn so intensely, it can stop burning due to smothering itself. ... until it gets air again... then it erupts right back into it.

Already happened at least twice

Here I am, a resident of eastern washington going "You got insulation?" My apartment buildings were built on a budget in a desert like environment, but we get super hot summers and super cold winters and not a lot of moisture - yet I don't think there is an ounce of insulation in these walls. Ice can form on the walls in the winter, heat just radiates through the wall in the summer. If I could I'd take someone to court over this.

I consider the drain unclogging informative also as I didn't know it was such a big issue but I am also not very savvy when it comes to subjects like that or this.

What about HAY, i read that does not burn well...why the heck did you not include hay in this?

Maybe teaching with some accurate facts?

Build with steel stud framing. You make up the material cost through reduced labor cost... if you have a good crew.

@@ghfjhloudz7607 because most people don’t live in a wigwam & insulate their walls with hay. & hay will most definitely burn idk who told you that but they are very wrong

The Grenfell fire was created by the CLADDING infill of very flammable polyethylene PLUS the chimney effect of the gap between the insulation and the cladding. Not helped by plastic windows held in place by foam, polystyrene, and rubber. The insulation was not suitable either, can burn as in this test, but the combination with the cladding and air maximised the inferno. Grenfell was far from the only building with this construction, turns out the UK was riddled with hundreds of similar buildings. The inquiry has JUST ended (Nov 2022) report yet to come, and criminal investigations are now able to be progressed.

@@asilver2889 A great example to show why too much foam, plastic, and rubber-like stuff is a bad idea on any building.

In the UK I get lots of phone calls from firms trying persuade me that I should have my glass-fiber insulation removed and replaced by plastic foam.

No one is being blamed because the eco political issues were met and werecmore important than any other issues. considerations.

Bay number 2 reminded me of exactly that. Uncomfortably flammable material in a vertical arrangement, chimney draft, and we’re off to the races.

As a fire Marshall? You should already know this stuff. Don't they train firemen/women on this?

@Ll Walker we see these things in classes as well as in the field but at 3am in 19° smoky wet burned out structures our main objective is to determine point of origin. Many times there's nothing left to compare. My main point is it's nice to see a side by side comparison as building materials are varied in different structures.

@@walkermom100 It's always nice to insult others knowledge isn't it?

@@UltraGamma25 how is asking a question insulting someone? You're saying they should not know this information after being in a role for quite a number of years.

@@UltraGamma25 also a fire Marshall has a different role than a regular firefighter. A fire marshall investigates fires so they should.know these things.

I love the stuff, it's far better than fiberglass. Instead of just stuffing it into a space and hoping it fits, the rockwool can be cut to fit intricate cavities with no air pockets. The fire resistance is just a bonus IMO. It's a superior insulator as well.

I made this video because I've seen other demonstration doing the same thing but never involving spray foam. I used spray foam in a lot of my projects when I do home repairs in flip houses the stuff is completely safe as long as the electrical system is good, as an electrical worker I always oversized the wires to prevent the hazard

@@post.10 a man of many talents

I just shared it on Facebook to hopefully help get things going on the viral bit.

@@post.10 as an Apprentice-looking-for-work, I salute you for that. #12 might cost more, but it's worth the safety and peace of mind for 15A circuits, especially places that are likely to have space heaters used (this is why I have a 20 A Single-outlet circuit for A/C and heater, NOTHING ELSE goes on that circuit)

Spray foam has excellent resistance to heat transfer and closed-cell blocks moisture. It is flammable so if a fire starts, get out. Follow codes when installing it that require an ignition barrier (drywall generally). With fiberglass on a roof you may well rot out due to moisture intrusion.

then send him a medal if he earned one in your book

@@lordjaashin he might not have a PO box

@@lordjaashin I live in Scotland and we only have blue Peter badges.

I'm sorry your college failed you so badly...

yep, basalt (lava rock)

Mostly Correct! The difference is temperature. Glass melts at a much lower temperature than rocks. Glass even burns in many building fires when the fire is hot enough. That means the "mineral wool" made from rocks is, by far, the best and safest in most applications.

@@laughingone3728 true. rockwool is painfully expensive but it's the most heat resistant. The only thing better than rockwool is asbestos... I'll stick with the rockwool😅

@@Pantology_Enthusiast Not only that but rockwool is VERY water resistant, the basalt is already resistant but the oil used in it's manufacture improves it further. Fiber glass holds water quite well, making it easier for mold and mildew to form this trapped moisture can also cause corrosion and damage to wires and outlets, increasing the chances of fires.

@@Gargoyle364 oof, big time. Fiberglass is like a sponge.

You can smell his perfume?

Yep. The difference between this small science experiment and a full publishable study is doing it several more times and probably recording the temperature of each. An integral analysis of the time spent above 250°C, with a resulting value measured in degree-minutes, would imo be a good proxy for how “dangerous” each insulation is. Control against some variables by lighting every insulation with a fuse or other identical pyrotechnic device placed identically in each wall cell. That way ignition technique isn’t a factor. This could become a whole study on the fire risk of various forms of insulation.

the test does not make sense because in reality the wall is not made as in the test, so the conclusions have nothing to do with a real scientific method

@@wallalo Read the previous comment on this thread. That's how you properly do it.

Agreeed

definitely looks like what happened with the insulation board. at the beginning it didn't do much and the spray foam sealing the edges did most of the burning. eventually the temp got hot enough and the wood started burning, and the insulation board started to burn too, which is when it really took off.

But getting to and maintaining the heat required for some of those to take off is the key factor. If the fire can't maintain the temperature needed for the fire to stay light and spread under its own presence... it's just going to burn itself out. The two that burned are petroleum based.

mineral wool is made out stone. How do you imagine rock burning? Will it melt? Yes. rockwool states temperatures up to 1000c.

Flammability and combustability are two different properties. Normally this material is behind non flammable plaster and gypsum board so flammability isn't a big issue until the building is already lost. Meanwhile, the combustion point of the foam should be high enough that the wire insulation and wood are also close to combusting themselves

Spray foam won't burn like that. He used great stuff which is a different type of foam. You canceled a job for no reason because of wrong information.

I'm thinking of doing the same in the future but I watched videos that said the reaction from the spray foam heats up the sheet metal of the van and you can get warped panels that can be seen externally but I'm definitely not doing it after seeing this video either.

Inb4 you use something even more flammable...

Why not? There is no reason why it should ever catch fire inside a metal van.

you can get fire risistant foam that works up to 1000 celcius like rockwool both of them can burn in a serius fire, but so can metal

Rockwool, aka mineral wool is literally made from rocks, cant get more environmentally friendly that that

How toxic was that

I’d be interested to see a fire test on wool insulation. I remember seeing one on wool carpet vs nylon and the wool just smouldered and then went out

It's also bug and rodent resistant

@Unknown Alien yes it is, the fibers come loose while insulating and they go really deep in your lungs. Even when wearing a face mask it wil remain in the air for quitte a while. And the insulationvalue isn't that great

do you call out metal welded ariund 10 foot wide doors to backyard

Thermal barrier paint is painted on exposed foam insulation. Ignition barrier paint can also be used depending on the area.

you are so right if you haven't experienced a real fire the average person has no idea how fast a fire spreads it can engulf a room/car/rv in seconds

I also live in Texas, they did open cell in my place two days ago

Open cell spray foam loves moisture and growing stuff in it

closed cell spray foam if you can afford is an effective vapor barrier and is also has a class 1 fire rating.. meaning it is self extinguishing. it will only burn in the presense of constant flame exposure.. do not fear spray foam.. do the research .. my home burned 2 years ago, traditional insulation, on rebuild i opted for closed cell and did the whole house.. i made this decision as an active firefighter as well..

Get nice closed cell spray foam. Having R7 insulation, inert AND blocking, and structurally supporting burning stuff is great, along with being a physical barrier. I work with rigid closed cell foam professionally (as high performance foamcore-carbon fiber composite longboards). The stuff doesn’t mess around if you get the right stuff. The lil can you can buy is nothing like the two-part polyol/isocyanate rigid spray foam that is applied. That stuff (spray foam) is used in fire safe buildings for a reason. It is REALLY good at taking a fire. If it’s between open cell and rock wool, picking rock wool is the easy choice. If it’s between a nice rigid closed cell foam and rockwool, picking closed cell foam is the easy choice. Anyways both work very very well and it’s a matter of the one you have is the one you want if you already have one of them.

he doesn't always set fires but when he does they're educational

iirc, post10 main job is as an electrician. cleaning culverts is his side hustle as a hobby

Fiberglass is the cheap and low-performance one

Grenfell Tower burnt down due to the fire spreading through the exterior walls via the cladding that was installed not via the insulation and the inside walls but yes they did use one of the cheapest cladding materials which was also not rated for the building height. The Building was constructed in the late 1960s so it's likely that either Asbestos was used as the insulation or at some point was replaced with another low-cost material such as Fiberglass..

They use ceramic wool..

There are underground coal and Peet fires that have been burning for decades and will continue for centuries.

That's the fire triangle for you: To have a fire you need air, heat and a fuel. Remove one of those, and the fire dies out.... The last one will eventually solve itself at one point.

@@LostWhits Ah, but they will someday stop burning. Eventually.

all the interior doors in my house are hollow...

I mean it also allows blown in cellulose.

The spray foam is supposed to be covered with intumescent paint or drywall, this would have prevented the fire.

@@evanrobinson7657 cellulose doesn't burn easily because it's treated with borax.

Two things. The combustion point of foam is formulated to be quite high. If your wires are hot enough to combust foam insulation, it's likely also hot enough to start burning wood and wire insulation. Second, these insulation would normally be protected from open flame by the gypsum or plaster wall finish which should protect the insulation from direct flame for the first 30 minutes

Wow. How horrible. 🤔 code also allows u to build with wood, plywood, paint, carpeting, and wall paper numb nutz.

As can sand.

Grain Silo Explosions.

@@blipco5 I'm pretty sure, sand cannot burn. It's already burnt.

@@voidseeker4394 Some highly energetic chemicals can react with/burn sand. Being silicon dioxide, there is oxygen available in it. But unless you store incredibly nasty fluorine compounds in your home, there should be no problem. Metal fires are very fun though, because any attempt to put them out with water will often break that water into hydrogen and oxygen and blow you right up.

@@Knuspabrot you're talking about extremely rare situations that don't happen in real life. flourine compounds will react catastrophically in high temperature long before it can react with glass powder. flourine compounds are nasty and will react with everything even at room temperature

Great info...makes sense....fire needs air to run and spread...I just built a hoise in New England and did spray foam exterior walls and fiberglass bats interior and cielings

Other ways to tighten home 😆 Probably nothing worse than spray foam though

@@anthonyman8008 ​ Why do you say that? How about some evidence to back up that claim. At least elaborate on why you think there’s nothing worse than spray foam.

@@kirksatterwhite2473 learn to internet

@@kirksatterwhite2473 just look the video

Rockwool repels water. It doesn't even take on or hold water due to the oils that the manufacturer sprays it down with during the manufacturing process. Wetted down fiberglass and newspapers will have the potential for mold in no time at all. Regardless of what insulation is decided upon, the structure requires some sort of ventilation system for the purpose that I previously mentioned concerning mold spores along with the minimization of or the total elimination of the potential carbon dioxide build up within the structure.

Only one thing i can think of for spray foam and foam boards is good for is for cosplay. You can make pretty impressive looking armor and props (fake weapons) out of em

As far as fire hazards go, yeah, the video shows it's pretty bad in that regard. But apparently it has its own benefits aside from that?

pretty sure that stuff is banned or not even considered here. seems like a US only thing. it's all glassfiber or rockwool in sweden. afaik.

@@leezard7696 thats what i meant 🤪

@@GizmoTheGreen I believe that foam stuff is banned in all of Europe, for good reason it seems.

What the hell are you talking about? Rockwool is the itchiest insulation of all. Just ask any insulation installer what type they hate the most.

Indeed, but often some nutters invent cladding which is barely enclosed in air containers and then: google "Grenfell inferno" - giant block of flats burned like a straw. Investigations are ongoing.

While this is true. The oxygen exposure conditions were the same between the samples so the test is still somewhat valid as the variables were kept as similar as possible.

@joshuacriswell5032 not entirely, foam normally should not be exposed, as even UV will cause its degradation.

Its kinda insane how high our standard in construction is in comparison to other countries, and for years.

What is plastic foil? Sounds like too different materials. And..do you put this layer between the outside wall and the insulation?

@@nyrockchicxx plastic foil. Like the aluminum foil you have in the kitchen but made of plastic and is thicker. It is used on the inside of the insulation here since we mostly have cold air on the outside of the house.

@@Jonas_Aa Mylar sheets?

@@nyrockchicxx In Australia, we call it sisilation foil, goes on the outside of the timber framing before bricks on the very outside. It's a separate condensation barrier designed to ensure the inside of the framing is kept dry.