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The Comparative Safety of Rockwool, Fiberglass, and Organic Fibers (a review)
Old 25th August 2017
Thanks; yes, I was thinking of increasing surface area (I want to make a booth out of it, so a pure UT recording booth). I want absolutely 0 reflectivity. Will 3" of UT reflect anything? What about 3" of 703, or Rockwool; will they reflect?

If so, could I cover them in foam wedges in order to reduce reflections?
Old 25th August 2017
Gear Guru

Saur, you are posting random questions in random threads. This thread is about Comparative Safety.

Old 20th December 2018
Lives for gear
What about spraying a mist of adhesive all over it before covering the insulation to keep the dust in?
Old 26th December 2018
Lives for gear
djanthonyw's Avatar

I covered mine with jersey cotton sheets (it was the least expensive & flexible material vs quantity I could find). Should this suffice, or is a thicker material recommended?

Attached Files

1 untreated rrom.mp3 (142.9 KB, 824 views)

2 treated room.mp3 (151.0 KB, 834 views)

Last edited by djanthonyw; 27th December 2018 at 07:47 PM..
Old 8th March 2019
Deleted 451f99d
Originally Posted by takman View Post
Before i had started construction of my rockwool panels, i had done research into the saftey of it.....and i was certain it was going to be fine..

I have all the rockwool panels installed in my room ( my bedroom)..i have some halogen lights i installed...

i noticed the lights were illuninating A LOT of dust particles...and i became a bit paranoid... so i starting doing more research..

all the research says its safe. So you start reading through forums, and everyone is in agreeance its safe..then some guy posts something like....of course they will say its safe, they dont want to hurt their profits..or dont trust the govt agencies....or its safe until you start pumping low freqeuncies through and releasing the fibers...

i know i have told people its safe...but now that i think about about pumping bass through it....

it was the damn lighting in my room that got me all paranoid again.....Deep down i know i shouldnt worry...and i believe its safe....but i still cant let go

Glenn? Ethan? make me feel better!


so i took a shirt from my closet, brought it close to the light, and whacked it a few times...and you wouldnt believe the dust and fibers that came from it...

No matter where you are, you are breathing in dust...i cant imagine the abuse your lungs take. so why am i starting to get paranoid again?

hahahha i know i'm having the same thoughts... I mean i bought the most expensive vac cleaner with my gfs money and now i still see some particles. I decided I will wear a respiratory mask within my house.
Old 25th March 2019
Here for the gear
moustachio's Avatar

I'm surprised this (attached) paper wasn't included in the initial selection.

Anyone here have experience with Woolly Shepherd, a uk manufacturer of sheeps wool panels?
Old 16th August 2019
What a fantastic thread everyone should read who works with recordings studio construction/baffle/isolation. A well deserved bumped into 2020 !
Old 1 week ago
Here for the gear

Sop, what exactly is ROXUL HT vs ROXUL? It's been asked before, but I don't see the answer.
Old 5 days ago
Here for the gear
There seem to be some new concerns in the EU about the safety of mineral wool. Apparently the product that's on the shelves is not the same product that was tested and approved. So our current regulations underestimate the risks of handling modern mineral wool.

Mineral wool was originally classified by the World Health Organisation (WHO) and the International Agency on the Research on Cancer (IARC) as carcinogenic and hazardous to humans. The mineral wool industry then altered the composition of their product, which then underwent further tests. In 2002 mineral wool was declassified as a carcinogen. However, it has now emerged that the product as tested was different from that which is commercially available, in that an important ‘binder’ had been removed. There are calls for re-testing by the European Chemicals Agency (ECA), this time with tests being conducted on the product as sold, not a variant with the binder removed.
Old 5 days ago
Here for the gear
UltraTouch is pitched as a safer alternative. The ads show kids hugging batts of it. But cellulose insulation produces a lot of dust so we probably shouldn't just assume it's risk free because it's made of cotton.

UltraTouch is ~85% recycled cotton. AFAIK the remaining 15% is an olefin fiber binder that never gets discussed. Olefin fiber is a synthetic polypropelene polymer that's found in carpet. There doesn't seem to be any information available on how safe it is a binder in insulation.

UltraTouch also uses Boric Acid as a flame re-tardant. Borates are one of the safest flame re-tardants available. But you don't want to breath in large quantities of borate dust.
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