Hello all and Merry Christmas-
I have realized I have a serious need to do some air sealing in my attic.
House (roughly 1840s) was built with "plank lath" walls (even interior walls) in which what we'd call "studs" in modern times really are only spacers- and the plank lath is attached lath to lath at all corners of walls and ceilings.
Net result is that where there is no plaster (in the places where wall cavities meet each other or ceiling) there are all the openings from the hatchet cracks in the lath. Thus the wall cavity interiors of all the interior walls "duct" to the attic.
When I bought the house it had zero attic insulation, and I quickly put about 6 inches of blown cellulose in attic (know I need more but needed to be able to work up there for other things such as wiring).
I now realize that before adding any more insulation, I really need to "mud over" all the void-areas in the lath from the top side to air seal it so that my interior walls are not "ducting to the attic."
Of course it is now below freezing nearly all of the time, so simple things like old sheetrock compound or one-component foam won't cure
Appreciate suggestions on materials and methods to accomplish this in a simple and affordable way!
Thanks
I have realized I have a serious need to do some air sealing in my attic.
House (roughly 1840s) was built with "plank lath" walls (even interior walls) in which what we'd call "studs" in modern times really are only spacers- and the plank lath is attached lath to lath at all corners of walls and ceilings.
Net result is that where there is no plaster (in the places where wall cavities meet each other or ceiling) there are all the openings from the hatchet cracks in the lath. Thus the wall cavity interiors of all the interior walls "duct" to the attic.
When I bought the house it had zero attic insulation, and I quickly put about 6 inches of blown cellulose in attic (know I need more but needed to be able to work up there for other things such as wiring).
I now realize that before adding any more insulation, I really need to "mud over" all the void-areas in the lath from the top side to air seal it so that my interior walls are not "ducting to the attic."
Of course it is now below freezing nearly all of the time, so simple things like old sheetrock compound or one-component foam won't cure
Appreciate suggestions on materials and methods to accomplish this in a simple and affordable way!
Thanks