Choosing Attic Insulation
Hi all, In addition to venting questions in previous post I thought I’d ask about others experience with different types of insulation. Have you used fiberglass batting? Blown in cellulose? blown in other? Soy foam spray? Other spray in? Pro’s and con’s desired for brownstone attic. Thanks!
Hi all,
In addition to venting questions in previous post I thought I’d ask about others experience with different types of insulation. Have you used fiberglass batting? Blown in cellulose? blown in other? Soy foam spray? Other spray in?
Pro’s and con’s desired for brownstone attic.
Thanks!
Thanks to both of you! After much research today and your comments I’m leaning towards cellulose… wondering if you have any thoughts on air-krete? Not for the party walls, but if possible to spray between joists in attic and if it can adhere to the underside of the roof (rather than a spray foam) to add it there? Wondering if a spray foam on the underside and a cellulose blow in combo would work?
Thanks!
In working on a project in the country, cellulose (when treated with boric acid) is supposedly much less friendly to rodents than fiberglass – go figure. It generally has less of an R-value per inch than spray foam, but is environmentally more friendly. Soy foam is grotesquely expensive (last time I checked) and has about the same R-value as cellulose and fiberglass.
you might search this forum. There were a few threads during the winter. 🙂
I put the cellulose after some comparisons. I would defenatly prefer to have cellulose pieces on the floor then fiberglass. Coincidentally there were a opening above the pocket doors so when workers filled in attic with cellulose a lot of it came down behind the pocket door and I spent week digging it out and isolating the attic from the wall cavity. I was much happier to deal with cellulose at that time. Other plases:
celullose performance does not degradate when temperature lover. Cellullose if fireproofed correctly much more fireresistant and finally there is not much room at the attic toward the back of the house. So cellulose can provide better results there because it is dencier.
But I am sure other people will have as many arguments in other direction.
PS. Check pocket doors and other openings to the ceiling before filling it up.