How do you super insulate a brick bungalow?!
Super insulating to Passive House (R-40 / R-60) standards has been well documented in these forums for existing or new frame homes, but no one with experience has discussed existing, 100 year old, 12 - 18" thick walled, brick masonry homes that are prevalent here in the greater Chicago area and in other areas throughout the country.
If you spray foam against the exterior walls will they deteriorate from the inside? Or does open cell allow enough vapor transmission that it will dissipate at a rate acceptable to the wall.
Do you use spacers upon which hard foam board is fastened to create an air barrier and then surface to which you can then spray against? But doesn't this cause vapor issues because of the foam board?
How do you do it?
Please inform those of us trying to bring the fortresses of the 20th century up to tomorrow's energy standards and beyond.
Posted Jun 21, 2010 12:52 PM ET
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