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#61609 by Robert Scott
Tue Sep 17, 2013 1:06 pm
Forum Members,

Reaching out again to the DataCAD brain trust for some free advice ;) We are in the process of adding much needed insulation to the exterior walls of our 1870's farmhouse here in Michigan. Several of the walls I did remove and replace siding and insulated/air sealed with Fiberglas batts. I have a large two story wall left that I would rather not insulate in using my old methods. Traditionally, here in Michigan we would drill holes and blow in cellulose insulation but I'm now looking at a foam process which I would hire out.

Anyone with experience using foam like this? Open cell or closed cell preferred??

The major players appear to be Icynene http://www.icynene.com/ and demilec http://www.demilecusa.com/

TIA,

Robert
#61610 by Neil Blanchard
Wed Sep 18, 2013 7:34 am
Robert,

Foam is nasty, and it outgasses, and I would avoid it. For my two story balloon framed house, I used blown-in fiberglass. It is less likely to settle, but it was very hard to find an installer, and it is more money than cellulose. If the wall is closed, I think I would go with the cellulose.

If the wall is open, you could do high density cellulose, that is "glued" in place with a light mist of water, and it doesn't settle. It also is higher R value and is probably the best in a fire, as well. This is our local supplier: http://nationalfiber.com/
#61618 by joshhuggins
Wed Sep 18, 2013 11:32 am
I am pretty sure our builders are using Icynene, we have not had any of our customers complain about outgassing after their project was finished as far as I know. There is a toxic level when the install process happens dux to the chemical reaction I believe so wearing a mask during install and letting the space ventilate for some time after the process is required. Can't beat most foams values when installed properly. Proper protection of existing finishes is required as the foam can be messy, but that maybe our sloppy installers :roll: All of our installs are during construction, not sure about the process for existing construction.

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