Comment by defrost

1 day ago

Elsewhere fiberglass and mineral wool insulation aren't regarded as carcinogens.

https://pubmed.ncbi.nlm.nih.gov/1947241/

https://mesothelioma.net/fiberglass-connection-to-mesothelio...

4 comments

defrost

Reply
inferiorhuman  1 day ago 

  mineral wool insulation aren't regarded as carcinogens

A quick look turned up one mineral wool SDS with a Prop 65 warning for formaldehyde.

https://www.jm.com/content/dam/jm/global/en/MSDS/20000000205...

  • defrost  1 day ago

    From your link:

    SECTION 11. TOXICOLOGICAL INFORMATION

      IARC No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.

  ACGIH No component of this product present at levels greater than or equal to 0.1% is identified as a carcinogen or potential carcinogen by ACGIH.

  OSHA No component of this product present at levels greater than or equal to 0.1% is identified as a carcinogen or potential carcinogen by OSHA

    > warning for formaldehyde.

    Trace amounts can possibly sweat out in specific conditions .. which is why you might choose to install with a vapor barrier.

    • inferiorhuman  1 day ago 

        Trace amounts can possibly sweat out in specific conditions

      Nah, it's pretty well documented heat and humidity will release formaldehyde. In paperwork filed with the EPA arguing against new limits, an insulation manufacturer trade group cited California's (OEHHA) exposure limits on formaldehyde as reasonable.

      Those limits are:

        recently manufactured products contribute no more than 9 µg/m3 of
  formaldehyde into the indoor air

      So the Prop 65 warning certainly seems reasonable from here.

      https://downloads.regulations.gov/EPA-HQ-OPPT-2023-0613-0230...

      1 reply →