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depending on how large the rooms in the house are........
if it were mine... i'd re-stud it with 2 x 3's
even if it were only a room (wall) or two and do it myself-
too easy
and then use 3" Fiber glass. blown in insulation sucks IMHO
then you end up with a much thicker wall and much better insulation.
and that thick plaster has gotta be freezing cold in the winter.
having all those holes drilled to allow it to be blown in
defeat's the whole purpose i think. i was insulating all day yesterday
and i'll be insulating all day today.
i like the styrene insulation boards (comes in several thickness's )
between $15 -22 per 4 x 8 sheet... at home depot
nice thing about those is you can easily custom cut them to fit any shape
(not to mention light as a feather)
like say the single pane cellar windows when the temps go down to -20. for example
i even make them for certain windows just at night and end the heat loss thru them by allot...
especially on the north side that receives no sunshine anyway.
because ....
hearing the furnace constantly "running" will keep me awake at night otherwise
.............with no peace of mind.
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