Internal wall of a 1835 house
I live in a greek revival house built in 1835 on Cape Cod (MA). Over the years this house has gone through different renovations/updates some more successful than others. We are in the process of renovating the top floor which still has original wood windows (in really bad shape unfortunately) and no insulation.
The house uses post and beam construction (I was told) and the side walls (East and West facing) don’t have any cavity. The North and South walls (front and back of the house) do have cavities and have been insulated with cellulose 3 years ago.
The current wall configuration for the East and West side is (from outside to inside): shingles, asphalt felt, 1in thick wood boards, lathe and plaster. So the lathe and plaster are attached to the inside of the wall board.
We want to build the inside of these walls (on the east and west side) to add 2×4 or 2×6 frame and then insulate them (after we redo electric system).
My question is if I should remove the plaster before building the new internal walls. Trying to understand if the mess of removing almost 200 yrs old plaster is necessary or if I can enclose it in the new wall structure.
I hope I explained this clearly. Thank you in advance for your advices.
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