7 reasons I used Rockwool insulation at my house.

[@Richard-nb4iv]

22 years ago I chose Rockwool for my house and have no regrets! Its awesome stuff!

[@Righteous_hill_bandogs]

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

[@Richard-nb4iv]

@@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.

[@LifeIZlife-33]

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

[@Richard-nb4iv]

@@LifeIZlife-33 I've had my rockwool for 25 years so far and its still going strong.

[@Richard-nb4iv]

@@LifeIZlife-33 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.

[@TheDemonThorn]

at the start of the video, you could already tell how well insulated his house is from the audio in the video. this is the best sound quality I've heard from inside an incomplete house

[@NipkowDisk]

I agree, it is incredible.

[@johndawson6057]

Never noticed that. Thanks!!!

[@Nessy-of-the-Lynn]

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!

[@manwith2knives522]

Former insulator here. It is good stuff. We only installed it to meet certain fire codes, usually in commercial buildings. I would say around 90 percent of all homes being built still use fiberglass batts in the walls and blown in the attic though, they don't want to pay for the extra cost up front despite the obvious benefits.

[@TheRealWadeW]

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

[@charlesrodriguez7984]

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

[@bzdtemp]

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

[@wcraft]

I installed RockWool Safe-n-Sound in the partition walls when I remodeled my basement in 2012. I was adding a bedroom for my father-in-law and he's a super light sleeper - very sensitive to all sounds. His room is now the only place in the house where he gets decent sleep. The stuff works, and the added benefit of fire resistance is great for some extra peace of mind. Glad to see some videos to expand the knowledge of these products.

[@TheCookster64]

After watching many videos Rockwool is the only insulation I will ever use. I've been renovating a mobile home on a 2nd property and I've used it exclusively. It's worth the $. Rodent and insect proof. Fire proof. Water proof. Sound deadening. I love this stuff. I have one mini-split in that home and it's real cheap to run thanks to proper insulation. Best tip: use a bread knife! So easy! Attach it to a magnetic measuring tape for precise cuts.

[@shellyeddy6903]

When renovating our 1800s era home I used the safe and sound by Rockwool for the stairwell in addition to fire rated drywall as it being our only means of escape from the second floor in the event of a fire. I figured it was pretty cheap insurance as an extra layer! I also appreciated the rigidity of the product when installing in the basement crawlspace under the foyer.

[@SPCMCERV]

I used rockwool when I was building out my office. Ripped out a bunch of walls and had to replace the pink fiberglass batts. The rockwool is substantially less itchy than the fiberglass, at least in my experience. The sound deadening seems much better too.

[@Veritas-invenitur]

Sound dampening is a must

[@CrzBonKerz21]

I find rockwool worse than normal fiberglass

[@FJB2020]

@@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)..

[@dankim3950]

@@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.

[@Dave5843-d9m]

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.

[@jayfitmob8645]

As a commercial construction worker I'm extremely familiar with rockwool. It's an excellent product not nearly as dangerous as something either fiberglass or cotton-based or paper based. I constantly had engineers in Florida asking repetitively for it. And I was happy when they did

[@rekostarr7149]

I disagree wholeheartedly rockwool is way worse for health.

[@tcoradeschi]

@@rekostarr7149 because?

[@rekostarr7149]

@@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!

[@rekostarr7149]

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

[@aegisraven1284]

@@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.

[@Wotornot]

I've got rockwool insulation in my garage as of a week ago and you aren't kidding one bit Matt, the sound dampening out there almost keeps up with the 1 foot thick SIPs in my house...its just ridiculous! You do a bang up job pushing construction tech and info out to the masses, so cheers to that bud! Best of luck with with the rest of the house and thanks for taking us along for the ride too.

[@markross6182]

I found Rockwool during a remodel of a home built in 1992. Single story slab on grade. Hot and cold water supplied under slab. Both bathrooms are all interior walls. Hot water temperatures start at about 50° and increase to water heater temp. Plumbing fed through Rockwool maintains heat between showers for 15-20 minutes. Temperature under slab returns to ground temperature in less than 5 mins. Both bathroom remodels were taken down to studs and insulated with Rockwool in 2021-2022.

[@landonsmith4338]

Just did my entire house in rockwool. I live in the High Desert of Southern California, where it's 115° in the Summer and snows in the winter. Its like living in a ice chest. The insulation properties and sound deadening is insane. Definitely worth the extra money. Probably the best thing I did in my remodel especially considering the price of utilities nowadays.

[@-First-Last]

How thick are your walls, please ?

[@keno101]

Just got finished putting the R15 RW batts in my shop building, and my wife said she cant even hear my planer or tablesaw outside. It was also incredibly easy to install. I used an electric bread knife to make all my cuts, which worked way better than I expected.

[@nickbailey202]

7 reasons I went with Rockwool. #1 today's video was sponsored by rockwool. 🤣

[@kostasg7109]

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

[@dtemp132]

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.

[@davidmorrow4195]

@@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

[@kersej]

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

[@phi376]

@@kostasg7109 Lie!

[@lukasvotteler1168]

Civil Engineering from Denmark here. If you didn’t know Rockwool is a Danish company. Doing my work and studies, Rockwool is all we talk about. As a science nerd I aspire to work for Rockwool, not just because they make nice insulation but also because they might have the best R&D department in the country. Meaning, they have so many nice products. Good luck with the build.

[@myxangolife]

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

[@lukasvotteler1168]

@@JT-pc5kp the short answer is rocks. This video explains it really well. kzbin.info/www/bejne/qmepiIOKj8-qgtE

[@2strokepower803]

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

[@lukasvotteler1168]

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

[@Elevtr]

Cool job!

[@chrisdover8014]

When I did the siding replacement on my house, I used Rockwool and was very pleased with the results. My house was a 1950s with no standard spacing in the studs, no insulation, no sheathing, and no vapor barrier. Previous owners spent a lot of time making the inside look nice and I didn't want to redo all the drywall to insulate, so I redid the siding ( it was masonite) and went with smooth Hardie plank.

[@Jekyll_Island_Creatures]

How much did that run ya?

[@chrisdover8014]

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

[@angellas.1314]

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

[@chrisdover8014]

@@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.

[@ghshomeimprovements]

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

[@coryw31]

Having worked in residential, commercial, and industrial construction over 26 years, I paid attention to industry standards. I did my homework, and I learned about what products are best for fire rating, sound dampening, and R-value. This insulation is the only insulation I would use when renovating my own house. There is no way I would ever want foam panel insulation or spray foam anywhere near my project. I've been watching videos on how to install this insulation on the exterior of a house, and I found the videos interesting. Thank you for the video, I always appreciate other perspectives as it helps me to learn something I might have missed on my own; or it affirms my own thoughts about certain products. Have a great rest of your day.

[@SwedishDeathLlama]

I like the comparison of different Rockwool products and it is the tip of the iceberg. Their marketing tends to say, "use this here" but not always explain why. CavityRock vs. ComfortBatt? TopRock vs. Rockboard? Roxul Safe vs. CurtainRock? What challenge were the engineers solving when they developed each product, and what changes did they make to solve it? Hoping we can take advantage of your inside access to Rockwool and get some of these nitty gritty details! Thank you for all the content

[@angellas.1314]

I would also like to know.

[@machinemaker2248]

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

[@paulo7200]

Those studs looks so nice...almost a shame to drywall over.

[@Nokyai]

I notice the same too!

[@rjthomasindyusa]

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.

[@miltonmiller]

This channel has so much useful information per minute... it is hard to compare. Great source of into!

[@buildshow]

Thanks!!!

[@YaHsServent]

Guys, Here is our Savior HalleluYAH translates “Praise ye YaH” YaH is The Heavenly Father YaH arrives via the TENT OF MEETING YaH was Who they Crucified for our sins YaH was Crucified on an Almond TREE - Ancient Semitic Cuneiform of Moshe (Moses) - Isa Scroll (The Original Isaiah) Isaiah 42:8 "I am YaH; that is my Name! I will not yield my glory to another or my praise to idols.” Isaiah 43:11 “I am YAH, and there is no other Savior but Me.” Isaiah 45:5 “I am YaH, and there is none else.”

[@GlassicGamer]

I used Rockwool when I built an office and it made a huge difference in noise reduction. This stuff is amazing and easy to install even a DIY.

[@kevingrierson2331]

You've had me sold on Rockwool even though my contractor is trying to change my mind.

[@ABC-oo4vm]

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.

[@christking85]

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

[@CookieManCookies]

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

[@ABC-oo4vm]

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

[@beargang8853]

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

[@rockrl98]

Please redo the shop vac test once finished, I wonder if drywall will make it worse... (Doors open and doors closed)

[@anongrumpy6348]

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.

[@jonyates3918]

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

[@davidmorrow4195]

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.

[@drewt3210]

@@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!

[@davidmorrow4195]

@@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.

[@jay53648]

Yup! That’s it I had it!! I’m ripping my walls out and replacing my standard pink installation with rock wool🤣. Been debating and watching videos on here for a few weeks now and this video persuaded me. Thank you for educating us viewers! I wanna turn my bedroom into half studio and half bedroom and I think imma give that Rock wool a try. Oh ! And I’ll probably incorporate it in any future builds like you have your whole entire house. Thank you!

[@mabell01]

The Best Tag Line on YT IMHO. Short, Simple and Catchy.

[@solarcrystal5494]

please do the sound test again after drywall, since the exposed rockwool will dampen sound much more when exposed

[@user-nh3gu1ge3d]

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).

[@user-nh3gu1ge3d]

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.)

[@solarcrystal5494]

@@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

[@roberto3262]

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.

[@rsmith02]

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.

[@GranitePropServices]

As long as you come here knowing Matt has become an infomercial his channel is awesome.

[@twodogsandtheirfamily]

Check out the "Bahco PC-22-INS Insulation Saw ", we used Rockwool in our garage and in many other areas we have remodeled. That saw makes it super easy to cut and stays sharp. Been through hundreds of pieces and cuts like butter still.

[@Polar_Ted]

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

[@Richard-nb4iv]

Dollar store serrated kitchen knife works beautifully.

[@DanielBelzil]

My woodshop is right next to an apartment building. I insulated it with rockwool and did the walls in MgO board. My neighbor who lives in the apartment building just asked me what I did in woodshop . . . He had no idea that it was a woodshop. This stuff is amazing at sound insulation, especially if you pair it with MgO/plaster instead of sheetrock.

[@scotmatheson1109]

What's MgO plaster?

[@BDavidHome]

Rockwool is one of my top building material picks because the batt density is so consistent and they cut like cake. As you can see, the fit and finish of the installed product is excellent. Worth the extra cost!

[@brianwithers162]

I used Rockwool on a 150 year old house conversion here in the UK. North facing walls, framed and Rockwool stuffed, between framework also framework between rooms, all floors and ceilng joists similar. over three floors. Roof space and eaves filled. Cost a bit but what a result. Low heating costs compared with before, sound control absolute winner. The other advantage which you could have shown with a Blowtorch. Get a slab and heat up until red and feel the back of the block. Hardly any heat transfer front to back. Great as a plumbers torch barrier when soldering copper pipes.

[@joemartino6976]

Appearances of commercial bias aside, Rockwool is good stuff. Used it recently in a complete home renovation. Installs nicely....way better than fiberglass. More effective as well. Highly recommended.

[@GlueTubber]

Rockwool is awesome - I'm just a homeowner that found it at the big orange box store. I installed it in my basement ceiling (garage in basement), and I'm now replacing my attic insulation with it. I always recommend it to anyone that talks about insulation.

[@angellas.1314]

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

[@Ethan7s]

The reason was given at 0:30

[@Recovering_Californian]

Yeah, but nonetheless RockWool is the superior product.

[@bjjsdshepard1]

😂 you aren't wrong

[@Ethan7s]

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

[@neogx148]

Yup lol

[@mcintosh.daughter]

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

[@spacejunk2610]

I do like it. I was in commercial construction for many years. Many projects were speced out Rockwool way back then. I am thinking about building a cabin and think I will use this product. Thanks Matt.

[@timothyverschoren324]

i'm installing rockwool in my house as well but my wife is fighting me every step of the way just because of the price..I just know this will be the best choice for sound insulation throughout the house. thanks for this video and keep up the good work :-)

[@jerrybyrne5205]

Hey Matt, go to 2:34 into the video as it looks like the installer missed doing behind the wires above the white TV box

[@NipkowDisk]

We had loose rockwool insulation in the ceiling of the house I grew up in, and it was definitely superior to anything else IMO. And if I live long enough to actually have a desire to remodel the house I live in, rockwool would be my first choice bar none. Thank you for extolling rockwool's many virtues.

[@dancearoundtheworld5360]

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

[@ian2372]

I too live in Texas. With that sound deadening, I won't be able to hear bumps in the night and thus, won't have an excuse to grab one of many high caliber toys to go check things out. For me. The spray foam is still the way I want to go.

[@phi376]

I have a 120 year old Victorian house. I used Rockwool. Fire mitigation is a real thing in these old girls. Soundproofing and ease-of-use, especially with an electric fillet knife. Cost kind of sucks, but buy once - cry once.

[@ArlynEmrys]

awesome idea for cutting!!!

[@jacobstrutner8232]

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

[@nicolerishel6317]

I used Roxul sound & safe too, at a small fortune. It would be interesting to see a demo on the 2xs catching fire, and how much if any the rockwool helps as a block to stop spreading to the next stud bay

[@hvfd5956]

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.

[@MichaelM-to4sg]

I know Rockwool is a sponsor so I apologize but Owens Thermafiber offers all the same benefits but uses no formaldehyde binder thus healthier option. I’ve used Rockwool for years, actually when it was called Roxul. Didn’t switch to Thermafiber until the last 18 months when a client specified Thermafiber due to the formaldehyde free content. It’s typically slightly cheaper too. Only issue we’ve had is availability can be scarce.

[@salvab13]

Ty

[@MelyndaVang2023]

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.

[@Jopacob]

Hey Matt, we just use blue packaging strip on a roll and a stapler to pin/hold the batts in place , easy peasey

[@T0M3K6]

Rockwool will eventually absorb water if you get enough of it. I had area flooded and part of it got stuck in water. Just that part became soaked, but it didn't pull to remaining batt, so was just able to cut it off and move on.

[@chrisw4562]

Thank you for the great video. I like that you were upfront about the sponsorship, but it felt that you were still very objective in your assessment.

[@morrishowell7410]

Matt, I used this in a studio/tool shed new construction project in my back yard. The easy cutting enables you to fill the entire cavity, no voids like most insulation products. Spray foam has the problem of not being installed correctly unless the equipment is working perfectly, the installer knows what he is doing, and does it. Rockwool is DIY friendly. It should be the only insulation sold for wall and ceiling fill. It out performs all brands, it is expensive, hard to find, worth the effort, worth the additional cost, much more quiet, really gives you a high performance product. This is no place to economize the build. Putting this behind your wall covering will reward you as long as you live in your home. I would not have used it had I not watched Matt's channel, so glad I learned of it. It is the only insulation I will use in the future.

[@fixittony]

My parents house is also nearly 100% Rockwool and that was 24 years ago in Canada. I have done a couple remodels to my house and where possible I pulled out the fiberglass and replaced with Rockwool. I am a 100% supporter of Rockwool

[@jonathonmarkham8144]

Best insulation for old houses. My house is 224 years old and use rockwool on my projects. Fireproof, doesn't hold moisture, rodents don't like it. My walls don't have studs, planks placed at random, nice to stuff rockwool in. Love the stuff...

[@user-vp1sc7tt4m]

I used Rock Wool throughout the rebuild of the downstairs 950 sq ft apartment in our 50's built 2x6 frame house. It was back to foundation/studs. 2x6 Rockwool in studs above foundation to second floor. New interior 2x4 framing for interior walls with 2 inch offset from foundation and exterior 2x6 walls. 2x4 apartment walls facing exterior Rockwool insulated with 2x4 exterior, all interior facing walls insulated with 2x4 safe and sound, 1st to second floor beams filled two layers of safe and sound along with rezbar and 5/8 drywall. All gap areas fire stopped including wall transitions and fireplace areas. Finished with poly and acoustic sealant vapor seal.... my wife and I lived in this space for 8 months after the build was complete. It was the most comfortable space I have ever lived in through so many weather conditions. It was awesome. Do it right!

[@rickferrier3496]

Thank you so very much for all the knowledge you have passed on. I just want to say how much I like the feeling of being in an area that has been insulated fully with rock wool. There is just something about it that I find comforting, don't you?

[@davidegentile2324]

I am so stoked for your house. The sound attenuation by itself has me mesmerized.

[@buildshow]

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

[@jacobee3386]

"we're in the insulation phase..." Your entire project is an insulation phase 😂

[@turboflush]

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

[@niklasroble5441]

Big fan of Rockwool, use it on every project I can. My local lumber yard said they are 150 days out on rockwool orders currently.

[@PaulARSENALFC]

I’ll be using the same on my house, I build loft conversions in the U.K. we are always fitting PIR boards, don’t like anything about them, cutting, installing, also, they let off a rancid smoke when we tested in a naked flame, no matter what you do with PIR to protect yourself, the dust gets everywhere, as it’s static like, even with the festool cutting tool and extractor, Rockwool is definitely better for sound proofing too.

[@8Ilikeicecream8]

Hi, are we able to use it in uk ?

[@christopher8235]

I'm putting in Rock wool in my new build, thanks to you, and i have done it bare handed and short sleeves and have never had any itchiness.

[@YannickRoy76]

Hey Matt could you talk about how you being sponsored by Rockwool doesn’t make you biased about any product!? I’m getting mixed reviews on multiple youtube builders/contractors about many products!

[@plcf6995]

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

[@bobbys2160]

I watched a rockwool vs fiberglass video and I was sold on rockwool. I'm doing a addition plus a remodel on the older side of my home. WOW what a difference the rockwool made on the older side of the home. It killed the heat and noise I live in Hawaii where the older construction was poorly done. I'd tell everyone to insulate with rockwool. My AC loves it. I can use a smaller size AC due to the insulation.

[@christobar]

I love rockwool, it’s a superior product for sure

[@c0rnd0g_19]

I haven't used the Safe and Sound, but have used the R15 on our exterior walls (replacing very old R7 pink stuff) and can attest that the sound difference is incredible, before it was very easy to hear a car pulling up in our gravel driveway, now we hear nothing unless windows are open! Also important to me, as you mentioned, is the vapor permeability, we live in a climate that has extremely humid summers and cold winters, our 40+ year old house (with no vapor barrier) still has the original T1-11 siding (except where porches were improperly done and allowed actual water in) because of that ability to dry from either side. Our goal with remodeling this house is to get it through the next 40+ years with little to no issues.

[@OGCJ10]

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

[@rauljaimes6739]

​@@OGCJ10wondering the same

[@coachiti2009]

Hopefully Rockwool hooked you up. I tried to order it for a house and they were 1 month out.

[@buildshow]

They totally did!

[@serenasmith6412]

I had to drive a couple cities over, but I wanted some sound deadening for my interior walls. Everywhere closer wasn't carrying Rockwool.

[@TRYtoHELPyou]

Used Rockwood on our covid home Reno and it has been great and the quietness before putting up the drywall was unbelievable, just like the mike test here.

[@Following5]

I will say that, rock wool definitely help dampen sound coming into the house from outside, but after I put on Sheetrock, I noticed that the sounds bounce around the Sheetrock walls as if the rock wool wasn’t there. Just something to keep in mind when you insulate or use it for sound purposes.

[@lancernightful]

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

[@Following5]

@@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.

[@angellas.1314]

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.

[@Billybobjohngeorgejr]

I've been installing Rockwool on my projects over the last few years. I have to say it is a superior product.

[@DrivingWithJake]

Hey Matt, Something I've wondered about is using conduit for running wires what is the negatives on doing this? I figured it might be really helpful to make things future friendly for upgrades.

[@disasterpiecemusic]

I love this stuff. I use it in recording rooms and to fill acoustic panels and it’s superb.

[@fazerfaze]

I did my house in rockwool the one thing to keep in mind that dramatic sound attenuation will be reduced once sheetrock is up

[@atodaso1668]

Just cover your walls in velvet

[@danch10]

Finally a builder who insulates the interior walls! This is super common outside of the U.S.

[@FLT1979]

What kind of fabric did you use to cover the insulation in the attic? You mentioned a white vapor open fabric. Thanks!

[@slimtrip]

GREAT info! Loved the real-world demo with the shop vac at the end. I’m envisioning having guests over and not even disturbing a sleeping baby. Kudos, great work as always!

[@Real_Tim_S]

Biggest selling point on exterior Rockwool/ROXUL SAFE/CURTAINROCK 80 versus EPS/XPS can be summed up in 3-words: Grenfell Tower Fire. Wrap your house in Rockwool and you get to not die in a rigid board petroleum byproduct fueled funeral pyre. The hydrophobia and sound deadening are just bonuses to the R-value and fire rating.

[@lancernightful]

what does that mean?

[@kirkland5674]

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

[@hailexiao2770]

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

[@eliinthewolverinestate6729]

I use rockwool and hardy board insulation in between concrete block and masonry veneer. Also insulate inside concrete block.

[@unclegrizzly7112]

Great video - thank you! I have some questions about using RockWool for exterior insulation. I am leery of using ridged foam for exterior insulation in fire country and have thought RockWool's ComfortBoard 80 and RockWool Roofing Insulation would be better options in areas prone to fire. I would love to hear you discuss this issue and the pros and cons to the options. - Thanks!

[@robertcorradi8573]

Good one Matt..... Rockwool is the way to go ..... Fantastic product .....

[@rachelcolvard791]

Can you use spray adhesive when installing other than friction fit on the vertical?

[@michiganengineer8621]

It will work to hold the insulation in place long enough to get the ceiling panels in place. I wouldn't rely on it for long term holding power though. I've helped build a few audio booths using RW as well as fiberglass bats

[@Real_Tim_S]

Better to do a friction fit IMHO, if you add a glue, you reduce the fire rating (hint most glue burns very easily). following that, use Matt's advise and do some other form of mechanical mounting.

[@Venaloid]

Thank you for making these videos. I'd like to buy a house I'm the next 5 years or so, and this channel is immensely helpful.

[@thangn.8160]

Matt, I see that you use Rockwell for your house but other construction projects you use spray insulation. I'm a little confused. Could you explain the pros/cons of each?

[@chrishall2594]

Mineral wool is great that's all you need to know! Spray foam is quick and easy to install in a variety of areas.

[@vladv7019]

Matt! What type and thickness of this stone wool to use for ceilings, attic?

[@morlamweb]

More thoughts on mineral wool after having done about 900 sq ft in my basement ceiling: definitely wear a dust mask or respirator while installing it. Mineral wool usually costs a bit more than fiberglass, but the benefits (fire resistance, water resistance, sound deadening, more R value in less volume than fiberglass, etc) for me outweighed the cost difference. Installing mineral wool in empty, or nearly empty, stud bays/ceiling joists is one thing; it's a whole lot more difficult when working in a basement ceiling due to the concentration of utility lines. Fiberglass is a bit more forgiving in those cramped quarters in that you can squeeze it into place and fluff it up afterwards, but not so with mineral wool. It catches easily on nails, staples, just about anything in the way, so it pays to snip those off where possible to speed installation.

[@hailexiao2770]

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.

[@morlamweb]

@@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.

[@morlamweb]

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.

[@JG-ss8ik]

what product/thickness did you install in the ceiling?

[@PawPaws_Place]

RW is going into my house when it gets built at the ranch. Already decided that from a previous video you did on the fire resistance but the sound deadening is the bomb too.

[@CF-3300]

If I ever have the money to build a custom home I’m definitely using rockwool.

[@josiahbaker8339]

I did a crawl space dirt basement with this stuff and it sucked as far as itchy I don't think I've ever worked with a product that will make you more itchy. However, once installed it was nice and you could tell a big difference in the place with the first floor being much warmer. I would recommend a good n-95 mask or better and a full suit or fully clothed.

[@SinnisjInsulator]

I'm also sure the installers loved to install rockwool in your house, especially safe and sound, they made a great paycheck 😀👍. Water permeability is also a big key for rockwool vs fiberglass.

[@gary.richardson]

I would prefer Rockwool for the qualities mentioned. As for the Formaldehyde content, it appears that the substance breaks down in sunlight and moisture readily. So, a fogging mister, followed by using paint curing lamps, and venting, may be the best neutralizer. The other timber products have formaldehyde in them as well that may be treated simultaneously.

[@DandDClark]

Matt: "You should wear long sleeves, gloves and a dust mask." Insert clip of installer, wearing a tank top, no gloves, and a backwards baseball hat!

[@ghollidge]

I remember using this with a Gyproc system, double board in Soundbloc and acoustic sealant. It works and very easy to install.

[@aaronfloyd14]

“Today I’m going to tell you why I went with Rockwell insulation” “this video is sponsored by Rockwell” it’s was free and I got paid to tell you about it, that’s why. 😂😂

[@chriskhall]

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

[@porcorosso4330]

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

[@BostonMark]

8 reasons why and this is reason #1

[@porcorosso4330]

@@DK-mc7mp I mean "journalistically".

[@stevehunter7402]

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

[@spyrule]

I'd be interested to see the last vacuum test again after the drywall install.

[@ArthurDentZaphodBeeb]

Biggest downside for me is almost all residential mineral wool is made with formaldehyde binders. Rockwool does make one version without added-formaldehyde for the commercial market, but it is very difficult to source - as of a few years ago was told it wasn't available west of Chicago. I'd use standard mineral wool in roofs and as exterior insulation, but not in living spaces. Sure wish they'd eliminate formaldehyde like the fiberglass insulation makers did decades ago...

[@buildingourparadise2696]

Formaldehyde binders was exact reason why I switched to using Johns Manville over Owens Corning for remodel work. Itch difference was huge as well.

[@williamwallace1745]

Wow good to know that one

[@AdmiralBob]

Rockwool states that the high temp cure drives off nearly all of the formaldehyde. This tracks with formaldehyde's decomposition into methanol and carbon monoxide under heat. I'd love to know what rockwool's cure temp and duration are though.

[@seanstack180]

@@AdmiralBob yeah that’s a good point. Most people don’t know when they turn their gas stove on, formaldehyde is an intermediate chemical created and burned during the combustion reaction of natural gas.

[@donnybrasco6321]

Great video - super informative/ helpful. Also - that drone shot of your black metal roof..? Wow - B-E-A- YOOtiful!!

[@elliotsimpson3591]

As much as I like the acoustic test, it was kind of a mute point without a baseline/comparison test, such as before any insulation was installed. While I'm sure rockwool does have great acoustic properties, it's plausible that measuring the shop vac upstairs would have also registered "LO" without insulation (or fiberglass) installed.

[@brianzmek7272]

The word is moot not mute moot means it is irrelevant or doesn't apply or is irrelevant mute means it makes no sound

[@elliotsimpson3591]

@@brianzmek7272 Thank you for the info!

[@alexandrep4913]

@@brianzmek7272 You're a moot point.

[@viepng]

The fixer did a video where he shows the difference in a room before and after its insulated and he used rockwool

[@soundman1402]

I use Rockwool (well, same product by a different brand) compressed rigid batts in acoustic panels for my home studio. The stuff is remarkably effective at sound absorption!

[@jamiewalters6074]

Matt, do you have a video on your studio with rockwoll and fabric? Looking to put together a studio with the same and Zip.

[@cornholy69]

If it is used for isolation (sheathing - insulation - interior drywall/wood covering), fiberglass is going to perform equally as well in terms of dampening resonance. If you are going to build a traditional wall assembly and then in front (interior) fabricate fabric covered stud spaces for acoustic purposes, a safe n sound product will be fantastic. If you are planning on recording instruments, once you reach a depth of about 10”, R30 fiberglass is more effective (due to gas flow resistance) and less expensive. In terms of Isolation you will want to focus on mass, a double leaf system, air sealing, mass, and insulation to dampen resonance.

[@dlorien7306]

Remember when asbestos, a rock product, was a miracle material that was superior to everything? Wow, we really thought the world of asbestos and all its benefits

[@jamiewalters6074]

@@cornholy69 the studio is 2x8 construction. Using the Safe&Sound with the FabricMate or Fabric-Wall track with different color material and printed to finish it off. The Zip system is going on now and everything is getting sealed up. I'm just interested in what other "experienced" professionals are doing and not just the "youtube" kids show with foam square bats.

[@josoapification]

Ablative fire batt is made from compressed rock wool batt’s covered with a fire resistant coating. It is the most effective material for fire stopping complete walls cavities. It used especially in riser cupboards in multi floor building’s. The batt’s are quite heavy for there size. They are metric sizes 600 mm x 1200 mm . In America it’s 2ft x 4ft i am guessing ? Here in Ireland they are building a lot more timber framed houses with concrete block or a brick outer skin.

[@tubeyoustaff]

How does Rockwool safe and sound compare to Owen Corning's Thermafiber fire and sound guard, I only ask cause Home Depot does not seem to carry Rockwool

[@jaxturner7288]

Shopping for building materials at Home Depot is your first mistake.

[@timothykeith1367]

Lowes might have it. I believe Home Depot carries an Owens Corning mineral wool that I assume is basically the same

[@cornholy69]

It is very similar, I believe that the density is the same, and both are 3” instead of 3.5 like an R15 batt (so that the 2 pieces of sheet rock are decoupled, ie the insulation isn’t in contact with both pieces of sheet rock). Gas flow resistance is different, but unless you are acoustically treating recoding spaces, that should not make a difference. Also I believe that the R value of sad n sound is roughly R11, just FYI.

[@Imwright720]

I grew up in Austin, it’s a beautiful city. If I still lived there I would hire you for sure. I use rock wool to grow plants in my hydro system.

[@michaeld954]

With a house that quite you might consider a intercom system for emergency

[@quitusmaximus4664]

You convinced me to use it. Especially the sound bats between the rooms.

[@glenanderson6910]

Hi Matt, as a drywaller from Australia I just wanted to note how important it is that the insulation not protrude past the stud wall line, it seems like it will compress when you press on it, but over a large area it transmits a HUGE amount of force on your drywall.

[@musicynic]

I for one appreciate your info. Thank you

[@Familyfun2006]

I just installed rock wool in my house my self. Super easy to install, not itchy ether

[@AresGodOWar]

Any chance of doing a episode of what all you did to the house would cost a normal person not getting free stuff and what the estimate of the house is ? Just wanted to know how much someone would lose if they wanted to sell

[@mcintosh.daughter]

There is these places called Home Depot, Lowes, Menards, and many others, where you can go and find out how much they sell building materials for. It's pretty neat. Then you can call subcontractors and asks how much they charge to build with or install those materials. Then you'll know.

[@AresGodOWar]

@@mcintosh.daughter what's that have to do with how much he put into the house and what it books for , I don't know everything he bought or what house values around him are

[@buildshow]

I’m always hesitant to talk costs. This country varies so much with labor rates and even material costs. That being said this house retail would run about $350-400/ft to build today in Austin TX

[@mcintosh.daughter]

@@AresGodOWar I apologize for the snarky comment. I didn't take your comment seriously the way you worded it.

[@AresGodOWar]

@@buildshow Thank you Matt I appreciate the reply

[@vladv7019]

Hey Matt Risinger, can you please suggest, the SafenSound to use between the interior rooms and for all exterior walls to use R30 ComfortBatt model? Which one is better to use for the flooring and ceilings?? Thanks in advance and for the video!