Formaldehyde off gasing is a concern so this product is no longer on the market.
Dark gray insulation in old attic.
Cellulose insulation is a perfectly safe type of insulation that is commonly blown into attics.
On 2018 11 01 by melisa.
Most people are aware of the dangers of asbestos which may cause cancer and other health problems.
Pull back the insulation to see what s going on behind it.
Consider the key characteristics another way to determine what type of insulation you have in your home is to look at the insulation itself.
Cellulose contains a high percentage of recycled paper and does not contain minerals.
For example if the insulation is loose fill grey soft and without a shine you probably have cellulose insulation.
Two types of old insulation that are dangerous to your health are urea formaldehyde foam which is usually gray or yellow and brittle and asbestos.
Sheep wool insulation optimal is a range of grey coloured sheep s wool insulation rolls offering high thermal and acoustic.
This is the blown insulation in my attic.
Old attic insulation types.
If it s gray and you can under magnifying glass find occasionally tiny bits of paper it s cellulose loose fill or blown in insulation.
In general it looks like shredded gray paper.
If you see insulation that looks like this there s definitely a big problem.
Please review the photo examples of types of insulation above on this page and let me know if you have more questions.
If you have loose fill insulation that is gray soft and without a shine it is probably cellulose insulation.