mineral wool sound proofing experience

[Hobby_Man22]

I'm not done yet insulating the shop, but I want to say this stuff really seems to block the noise good like they said. I only have about a 1/3 of the roof done on my steel building, so it's very obvious when it rains and if it rains hard enough it is deafening. Now with that being said I put my ear up to the part of the roof where I had the insulation completed and you couldn't even hear the rain. This was R30 and it didn't quite fill the gap, but was told that was a good thing for sound coupling. This wasn't even the safe and sound it was the comfortbatt. There is about an inch of space in between the roof and the insulation. So I'm a happy camper. I had to put ear muffs on in a heavy downpour before. lol Just thought I would share my experience.

 

[mepstein]

I know they make safe and sound but I think it’s the same as comfort batt except for sizing. I bought one bag by mistake and it seemed identical but $5 more.

One thing is for sure, I’ll never touch fiberglass again.

 

[Hobby_Man22]

I know they make safe and sound but I think it’s the same as comfort batt except for sizing. I bought one bag by mistake and it seemed identical but $5 more.

One thing is for sure, I’ll never touch fiberglass again.

The mineral wool still flies around in the air and gets caught in your throat though. I haven't done fiberglass insulation but if it's anything like the fiberglass on a boat which I'm sure it is I bet it's a nightmare. That stuff takes like 4 days to get out of your skin.

 

[yeldogt]

It is dense ..... but interesting -- I don't see a huge difference in sound control when you get into the thicker vs fiberglass batts.

I have done both and I find them about the same with 5/8 rock

 

[Hobby_Man22]

I need to go stick it on the wall behind my dust collector and see what the difference is then. That will be the real test. It seems to me all the sound comes through the roll up doors now and not the walls.

 

[e36jon]

I'll second the 'wow this stuff really does quiet things down' experience. I have been adding Roxul Safe-n-Sound to my walls as I work on remodeling projects and I am surprised every time at how well it works, despite the fairly modest numbers on the package...

I have been wondering whether or not to switch to regular mineral wool batts that fully fill the cavities as better fire prevention vertically within a stud bay. It looks like a full regular batt for a 2X6 wall has the same sound absorption rating as the thinner 2.5" Safe-N-Sound batt.

 

[rlitman]

I'll second the 'wow this stuff really does quiet things down' experience. I have been adding Roxul Safe-n-Sound to my walls as I work on remodeling projects and I am surprised every time at how well it works, despite the fairly modest numbers on the package...

I have been wondering whether or not to switch to regular mineral wool batts that fully fill the cavities as better fire prevention vertically within a stud bay. It looks like a full regular batt for a 2X6 wall has the same sound absorption rating as the thinner 2.5" Safe-N-Sound batt.

It's all about the weight. The Safe-N-Sound is just the same stuff, packed down a little more densely.

I know they make safe and sound but I think it’s the same as comfort batt except for sizing. I bought one bag by mistake and it seemed identical but $5 more.

One thing is for sure, I’ll never touch fiberglass again.

Again, the extra $5 is because that bag weighs more. And yeah, it's much nicer to work with than fiberglass, but I still find it nasty to work with.

 

[yeldogt]

I always fully insulate all my projects -- all the walls and floors. I get that it seems like it should be better .. just not my experience.

Like wool when doing conventional insulation as it has better air control ... the pros don't like working with it and it not worth the up-charge for sound control. 5/8 rock is the better bang for the buck ... fill the cavities with fiberglass -- seal any gaps/holes.

 

[mepstein]

The mineral wool still flies around in the air and gets caught in your throat though. I haven't done fiberglass insulation but if it's anything like the fiberglass on a boat which I'm sure it is I bet it's a nightmare. That stuff takes like 4 days to get out of your skin.

I still wear gloves, respirator and drop the clothes into a washer right away but I get no itching and at least for me, the installation is way easier.

I had mice living in my insulation and using it for nests. I hate the idea of providing them with material to help them thrive. Mice don’t like rockwool so for me, that’s another huge selling point.