I am considering cellulose insulation, but surrounding myself with borate has stopped me. I need to insulate walls, eaves, and roof peak.
My 1930 era home has some foam board within the upstairs walls, scattered batts of fiberglass and/or cellulose in the eaves, no insulation downstairs, and unknown insulation in the peak of the roof, probably a little fiberglass. Exterior siding is vinyl, in good condition. Roof is new. I'd like to have insulation blown in, as the interior walls are also in good shape. I had considered having borate-treated cellulose blown in by contractors who said they could remove strips of siding, but I have auto-immune problems, and the idea of surrounding myself with borate has stopped me. Would aircrete be a solution? Are there better green/health solutions?
I know it might sound crazy, but you could try sleeping with some borate treated insulation next to your bed. A home test will show you what your sensitivity to the material is. Most people are not sensitive to borate.
- Borates in cellulose are used as a fire retardant.
- I recommend avoiding the cellulose with the less expensive ammonium sulfate as a fire retardant. That is much more likely to give you trouble.
I can't comment on Aircrete because it isn't approved in my area, so I've not gotten to use it.
I would avoid polyurethane spray insulation. If it doesn't cure properly, its toxins will not become inert.
For areas where batts make more sense than cellulose, I would recommend Bonded Logic’s “Ultratouch.” This has been a good product in every application I’ve used it in and not one client has reacted to it.
For more information:
Read "What distinguishes one cellulose from another? I've noticed a very wide range of pricing for packaged cellulose and don't understand why." a Q&A answered by Polly Osborne.