I have seen a lot of images and discussions on UFFI insulation which the toxic emissions I understand cannot be covered up but they do dissipate over time. It also appears that they should be removed if below a certain ppm (i believe it is 0.1 ppm). I started trying to educate myself on how long it takes typically for these levels to decrease to a point that they normally wont need to be removed and I didnt find that answer. 1) Do you have a resource on when this usually takes place. My logic is that this stuff has likely been in the attic for 30 years and it costs like $10K to remove so would nice to be educated on this one.
- In reading an update from Consumer Protection agency (CPSC) it talked about another foam used called UF Urea Formaldyhyde that is similar to UFFI but not so toxic See reference. How do you tell the difference. Anyone with image links they trust? . http://www.cpsc.gov/PageFiles/121919/AN%20UPDATE%20ON%20FORMALDEHYDE%20final%200113.pdf