What is a non-toxic and non-flammable home insulation?
I have done some research and am considering cork insulation. The house has had a serious rodent infestation and tends to have a high level of humidity. I am concerned because temperatures drop significantly in this area. Do you have any other suggestions for insulation materials that are not flammable, nor prone to mold and are non toxic? Do you know of any homeowners who have insulated their homes with cork, found it effective and energy efficient living through cold climates?
To find the best insulation choices for renovations and new construction I would first suggest you look at the Ecohome guide page on comparing insulation, see below –
Choosing the right insulation for the right application
Cork would be considered an eco-friendly green insulation as it is a fast-growing renewable resource, it also has a good fire rating, it is non-toxic, and it handles moisture well. So it meets a lot of your criteria. It is however, not always easy to find, and it is significantly more expensive that most alternatives.
Hemp insulation is a little easier to find and is similar in its ecological and performance characteristics, but hemp also costs quite a bit more. Within the mainstream types of insulation that are readily found, Rockwool/mineral wool would be the most easily accessible and cost effective. It’s non-toxic, it handles moisture well, it is made from stone dust so it has an excellent fire rating, and you should be able to find it in most major building supply stores.