Insulating a fully below-grade cellar with an uneven rubble foundation wall
I’ve read almost every article AND every comment/question & answer on this topic but haven’t yet seen anyone with this exact dilemma so I really hope you all can help advise: (You guys have been GREAT so far)
We are wanting to insulate the walls in our fully below grade cellar (with a poured-concrete floor and an uneven RUBBLE foundation wall.
While I fully appreciate the strategy of 2â€³ FoamBoard glued to the foundation wall, then a pressure-treated Bottom Plate (perhaps with some “sill-seal” tape on the bottom to avoid direct contact with the concrete floor), Framing (we’d use metal studs to avoid the risk of mold), batt insulation, polyethylene vapor barrier, and lastly finishing up with a dense-armor wall board.
BUT we live in a 140 year old town house (Northeast Tri-State area) built with a fully below-grade RUBBLE foundation wall. (Cellar height: approx 8 feet. Floor is poured concrete.) Since the foundation wall is made of large uneven rocks, boulders & mortar that protrude out at irregular intervals and depths, we have no flat, even surface and so are unable to glue up the 2â€³ foamboard.
Since this is the first step in the process, we got a prob’m, as they say…
How do you guys recommend that we insulate OUR unique situation?
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