He forgot to mention that Rockwool in Europe is not allowed indoors because it has been linked to lung cancer.

This channel would be so much more valuable if Matt would take more seriously conflicts of interest. He could get this video sponsored by a roof shingle manufacturer or something. I have to be skeptical of nearly everything he says on this channel, which now that I mention it, makes me wonder why I sub at all.

@@kostasg7109 Any link to this and what do you mean "not allowed indoors", like not covered with drywall or something similar? Looking at the EURIMA (European Insulation Manufacturers Association) they have nothing negative to say about mineral wool insulation - "Its exceptional thermal properties contribute hugely to European efforts to save energy and combat climate change. " www.eurima.org/about-mineral-wool.html

@@kostasg7109 i have no idea where you got that information but that is definitely not true.

@@kostasg7109 Lie!

I agree, it is incredible.

Never noticed that. Thanks!!!

Rockwool is awesome for that! We cannot tell that it is raining or lightning outside. We can't hear loud cars either. We literally hear nothing unless we open our windows. The only thing we can hear is rain on the metal roof if we go up into the attic. Otherwise we wouldn't even hear that!

Obvious benefits would be to live underground. Natural geothermal energy efficiency and no UV radiation 🤣🤣

If I start a home building company I’d use rock wool on every exterior wall and roof area.

@@MrMasterMarksman Radeon could be an issue, depending on the area you build your cave.

Yeah, but nonetheless RockWool is the superior product.

😂 you aren't wrong

@@Recovering_Californian It may be a good product, but we got a sales pitch and not an unbiased opinion.

Yup lol

@@Ethan7s Do you find the information he provided misleading or untruthful. If you do, what batt insulation would you recommend instead?

Hey, but does rock wall keep the summer heat out?

@@Righteous_hill_bandogs rock wall greatly reduces the transmission of heat and cold, however if the inside is already hot it will keep that temperature steady, unless you have a cooling source.

@@Richard-nb4iv great, how long will your insulation last? I.E. how frequently it must be changed? How many years ?

@@ibrohimismailov2993 I've had my rockwool for 25 years so far and its still going strong.

@@ibrohimismailov2993 I think it will last a lifetime. Rockwool is made from volcanic slag and spun metal? I've worked in construction for over 35 years and rockwool is a great product.

I disagree wholeheartedly rockwool is way worse for health.

@@rekostarr7149 because?

@@tcoradeschi particles get in the eyes (even with glasses) and stay in the air it's insane (so once you take off your mask you're gonna start feeling the impact (maybe not immediately but pretty soon). the thing doesn't stay together on a microscopic level!

@@tcoradeschi fiberglass isn't dangerous at all in comparison there's much less breathing hazard and half the price!

@@rekostarr7149 well .fibreglass isn't bad for you anymore but neither is rockwool. Fibreglass is super itchy to me rockwool isn't. Both products only produce nuisance dust. An fyi from a ten year insulator and now ten year safety specialist.

Doing a remodel now and all the garbage out and only Rockwool in. Retired electrician, never recommended anything but Rockwool.

@@JT-pc5kp the short answer is rocks. This video explains it really well. kzfaq.info/get/bejne/qpx2irOFv9DbfKM.html

Hello from Sweden. We have a mineral wool insulation called paroc here. But I guess it's the same just different brand names

@@2strokepower803 it looks to be the same yes.

Cool job!

Sound dampening is a must

I find rockwool worse than normal fiberglass

@@CrzBonKerz21 Same and I think most people get placebo effect from it.. Independent studies show that Fiberglass and Rockwool have the same STC rating which in a typical wall is around 1 STC (which is not noticeable to the human ear)..

@@FJB2020 All depends on density of product ranging from glass fiber, polyester and mineral. All have different purposes ie, thermal rated, acoustic rated or FRR etc - generally speaking mineral fiber (rockwool) is a much denser product compared to your conventional fiberglass or polyester. Price range of material goes from fiberglass > polyester > mineral wool. You get what you pay for.

I found rockwool is much less itchy that glass wool. It also has no binders so it is fireproof. It can also be spray filled into the cavities. Foil faced plasterboard gives a more than good enough vapour barrier.

How thick are your walls, please ?

Thanks!!!

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I would also like to know.

Great questions. Are none of these answered on the website?

Your opinion is correct i always felt the itch with JOHNS MANVILLE and not Rockwool.....

Reason why your contractor is trying to changing your mind, more then likely they’re getting some kind of incentive from manufacturer/supplier or both. More often that’s not passed onto you as the owner.

@@ABC-oo4vm yes because this video being sponsored by rockwool has no bearing on his opinion i am sure.

Just tell them you know Matt Risinger, and ask for the sponsorship discount ;)

@@CookieManCookies when hogs grow wings, just then it still a maybe.

he even says they allowed him the freedom to use other types of insulation thats why 5% of his house is other insulation dont use rockwool the contractor is right but dont use what the contractor wants do your on reserch this guy says hes sponsor by rockwool and been sponsor so if he shows anyone else he brakes his contract

I notice the same too!

LSL studs are cheaper than dimensional lumber in Northern Colorado. I will never go back... they are a bit harder to work with but they are perfectly straight.

awesome idea for cutting!!!

Buy once cry twice and you'll usually come out enjoying your purchases. Research is key lol

How much did that run ya?

@@Jekyll_Island_Creatures I don't even remember now. It was a while ago.

What is the change in your heating bill? And house drafts? This is my plan for the spring on my 1960s house.

@@angellas.1314 I really didn't get the chance to really find out. Shortly after doing the work, I took a job in a different city and had to move.

How did you put vapor barrier? I have 1900 house was planing to do the same but not sure how to add vapor barriers

What's MgO plaster?

I’m feeling really blessed. It’s an amazing home

I use a $9 harbor freight 10 In. Japanese Style saw.. works great.

Dollar store serrated kitchen knife works beautifully.

Ty

I have Cancer and am fighting for my life. I would be very concerned if the product is carcinogenic. I wouldn't want my boys or future generations to go through what I am going through.

Its important. Your water doesnt make you comfortable. Its nice to come home to a cozzy house.

Has it cut down on heat loss from the house? I’m planning on this next week!

If you really want to see it, there are other video's (not by Matt) that show side by side, Fiberglass, Rock Wool, open cell foam, and closed cell foam. While the foams will give better temperature insulation, they burn like crazy. Closed cell foam, at least and most likely all of the foam products, will also give off some really nasty chemicals which will dramatically reduce the likelihood of escaping a fire. As a former firefighter, even I was amazed at how fast they burned. Meanwhile, the fiberglass and Rock Wool did not burn. For the fiberglass, the paper backing burned, but the fiberglass, being glass won't burn unless you get up to the glass melting temperature. If you get close to the glass melting temperature, it may get a little gooey. As an example, in today's house fires, fire fighters are seeing temperatures starting around 400 degrees up to 1500 degrees. At a house fire I talked to fire fighters about, their FLIR camera read 742 degrees looking down the hall towards a group of bedrooms that were well involved. The Rock Wool did not ignite at all. You could barely tell where the torch was. Only a small amount of char was seen between the shelves with the Fiberglass and Rock Wool, where the Foams allowed almost complete burn up of the shelves. The example structure was an inexpensive wooden bookshelf as the tester discovered building a new wall as he had planned, was very expensive.

Hi, are we able to use it in uk ?

Did you install a vapor barrier when installing rockwool on an exterior wall ?

You will get the same results using Fiberglass.. Understand that matt is basically a sales man for whatever product he is getting for free.. (Do not trust what he says)

@@FJB2020 Products he shills for can still be quality products for people willing to pay premiums.

@@LackeysLack True, but I can no longer trust his judgment if he only says 'This is the one to buy, trust me, oh and this video sponsored by the same product I am telling you to get'...

I don't think that's true but I'd certainly be interested in seeing. I don't see how anyone could make the argument that sound would travel through two layers of drywall plus rockwool easier than only rock wool. But I could be wrong. Drywall itself is a pretty decent sound barrier (not as much as RW) and esp if you get a larger size (5/8 not 1/2 inch).

P.S. Perhaps sounds WITHIN the room would sound a little louder with drywall since the sound would bounce off the drywall easier than the RW but for sounds outside the room..... yeah I think the DW would only enhance the sound deadening. And I think most people are worried about exterior noise (e.g. TV in another room, loud kids, power tools, etc.)

@@user-nh3gu1ge3d sound bounces off and travels around drywall so with the doors open the sound would travel farther than no drywall. its why low sound rooms have the triangle foam exposed as opposed to behind a flat wall

I've used this in three studios that I've built so far. They're so quiet that I can hear my ears ringing. The drywall does bounce some sound off. But the sound stays within that room and doesn't really travel through the walls and or ceiling.

Of course the walls will echo with drywall installed but you shouldn't hear much of what's on the other side of the rockwool.

It's more about keeping the noise in 1 room and not transferring to another. It will still travel. The drywall will cause it to bounce more so it will carry better but won't transfer through the wall.

Just like an empty room and one full of stuff. It will be worse after sheetrock, and better once everything can deaden the sound.

Drywall makes it worse for the room you are in but better for being in the room next door. If you want to reduce the sound transmission out of the room you are in 5/8" drywall can improve the situation. Also can to RC clips, another layer of drywall, acoustic caulk, separate the framing.

@@davidmorrow4195 All great tips, thank you. Thoughts on RC clips vs. horizontal furring strips to minimize sound bridging (I.e. cost, labor, efficacy, etc.)? I've used horizontal furring strips combined with Safe 'n Sound and Homasote to great effectiveness with a laundry closet in a master suite. Thanks!

@@drewt3210 I think RC channels work better than furring strips but only used the channels, not the additional clips (maybe I should in the future?). I used them in the ceiling of a room. I did a lot of research on sound insulation. First thing to do is to make sure it is air tight between rooms (electrical boxes, caulking under or above framing). Safe n Sound works better for high frequency sound, low frequency sound (bass, walking on ceiling) travels through things so either additional mass like 5/8" drywall (cheap option but heavy), 2 sheets or decoupling works best. I used the mass vinyl mat (like Homasote) on the house next door to ours that we purchased as the house is 8' away. Seems to be a great solution but heavy and expensive. Putting up Resilient Channel (RC) is basically the same work as furring strips (maybe slightly more difficult to cut because sheet metal?) but does a better job as sound has to come through the framing, then can't get to drywall because drywall screws are only in channel, channel is mostly decoupled between framing and drywall. I also looked into Green Glue Noise Canceling caulk with goes between two sheets of drywall and will likely use this on next project which will be our living room ceiling. Seems simpler than RC or furring strips and is supposed to stop bridging. Can put up sheets of drywall very quickly, then mud and tape of 1st sheet is only to cover gaps (offsetting gaps on 2nd sheet). I hate sound from outside or between rooms and really like it to be quite.

Just cover your walls in velvet

what does that mean?

Yes, I wonder why Matt didn’t do exterior insulation. He seemed to love it in prior videos.

The problem at Grenfell wasn't the exterior insulation, it was the flammable siding (aluminum + polyethyleen + aluminum sandwich).

I'm fairly certain that both the law and youtube terms and conditions require he say this in the video.

@@chriskhall Not sure it is required by law or TOS. KZfaq is not regulated like tv, radio and news papers.

8 reasons why and this is reason #1

@@DK-mc7mp I mean "journalistically".

Matt’s building a new home for his family. Aaron can’t spell rockwool. Enjoy your mom’s basement.

Even if he is sponsord by Rockwell I doubt he would have his whole house covered in it if it was rubbish.

Stay tuned Sean. I'm going to make an unsponsored video and justify paying double for Rockwool. Granted I still use high density fiberglass when clients do not see the value of a $1000 upgrade to Rockwool. But I prefer Rockwool, and a $1000 is a great deal for a product that performs better. RESNET Grade 1 is easier to achieve.

@@mcintosh.daughter “Upgrade”?

I've used this in three music studios that I've built so far. It's amazing. No, I didn't get sponsored. But it would've been nice! I will definitely use it again even if I'm not. Huge difference using it.

I for one appreciate your info. Thank you

so you are saying rock wool is no good when there is interior noise ?

@@lancernightful, That's a good question. I am saying that the sound you make on the inside of the house bounces around the sheetrock very easily. However, travelling through the sheetrock/wall is a different story. In otherwords, if you keep all of your doors open in your house. There is a good chance the rockwool you put on your interior walls will do nothing. However, if you close your doors there is a good chance the sound will only stay within that particular portion of the house instead of resonating through the interior walls. I would say bedrooms interior walls are good places to use rockwool for sound blocking, but all other areas are sort of pointless and a waste of money in my opinion.

That is not my experience at all. I insulated my walk out basement, with huge sliding doors, and even with all that glass, the sound insulation is much better, and now it feels like a room, and not a basement. It was definitely a great bonus,surprise, as I was insulating for cold.

For basement I'd much rather just insulate the walls, especially if there is temperature-sensitive equipment (boilers, water heaters, furnaces, etc) or things stored there.

@@hailexiao2770 I have insulation in most of the basement walls, but by large, my basement is NOT conditioned space. I'd rather install the insulation between the conditioned and non-conditioned space to keep the expensive conditioned air where I want it.

Even more thoughts: most of the project went quickly, in that I had few pipes in the way, the joists were actually 16 in on center, and only a few cables to maneuver around. The last 1/5th of the project was above the boiler and hot water tank, and due to the concentration of pipes and wires there (also nearby are the thick cables for the electric dryer and electric range), that 1/5th took quite a bit more time to complete than the rest of the project. I don't think there was a single properly-spaced joist in the bunch; some were wider, some where narrower, one was sistered. Thus every piece which went up was a custom cut. None of the batts could be tucked into place as-is. I don't regret putting in this work but it sure was a pain in the butt while doing it.

what product/thickness did you install in the ceiling?

I used my bread knifes and it’s fine.