You might have some insight to my insulation problem, given you are all about heating a house. My old Victorian 2-story house has little insulation and has air flow / negative stacking issues. But I am hearing things that do not sound great about insulating a home.
Someone said insulation blown into an attic will shift with air currents in your attic and pile up in places (and be less in other places). I know if you air seal the floor, that protects the heat in the house, but attics still have air currents and this problem sounds logical. And "stuff" will flow through the house by air currents (that are never 100% gone) - meaning fiberglass glass fibers/formaldehyde or cellulose dust/chemicals. And, especially in walls, the blown in stuff will settle over time and become less effective.
Concerns about fiberglass. The newer blow in style sounds like it would be looser and make the floating fibers worse. I've also heard air convection causes air flow through fiberglass, and it is something you can't compact like cellulose to tighten it. You can air seal an attic that may help some. Formaldehyde also is common.
Concerns about cellulose. Chemicals (borate and some have also ammonia-something). I read of an apartment complex suing due to ammonia smell. I have heard the application of the chemicals might not be even and that means places could form mold, not be fire protected, if it gets humid / wet it can get soggy and no longer insulates. Someone also said fiberglass can get mold.
I am more game for something in my attic as that is easier to remove should mold or something happen. Walls would be a costlier problem to remove anything.
Anyone have any thoughts? I may be hearing a lot of competitor propaganda.
Someone said insulation blown into an attic will shift with air currents in your attic and pile up in places (and be less in other places). I know if you air seal the floor, that protects the heat in the house, but attics still have air currents and this problem sounds logical. And "stuff" will flow through the house by air currents (that are never 100% gone) - meaning fiberglass glass fibers/formaldehyde or cellulose dust/chemicals. And, especially in walls, the blown in stuff will settle over time and become less effective.
Concerns about fiberglass. The newer blow in style sounds like it would be looser and make the floating fibers worse. I've also heard air convection causes air flow through fiberglass, and it is something you can't compact like cellulose to tighten it. You can air seal an attic that may help some. Formaldehyde also is common.
Concerns about cellulose. Chemicals (borate and some have also ammonia-something). I read of an apartment complex suing due to ammonia smell. I have heard the application of the chemicals might not be even and that means places could form mold, not be fire protected, if it gets humid / wet it can get soggy and no longer insulates. Someone also said fiberglass can get mold.
I am more game for something in my attic as that is easier to remove should mold or something happen. Walls would be a costlier problem to remove anything.
Anyone have any thoughts? I may be hearing a lot of competitor propaganda.