How to Insulate a Stone Foundation w. Dirt Floor
I live in Maine and own a home built in the 1880s. We’ve been here for a few years now and have been trying to make heating the house more efficient and less like heating a lobster trap.
We have a high-efficiency furnace that runs our hot water/radiator system. Our basement is unfinished with a dirt floor and a granite/brick foundation. We have no plans to finish the basement so cosmetics don’t matter, I just want it to be a little warmer and energy-efficient.
The insulation contractor who did our attic recommended using spray foam to insulate the sill and then gluing foam board on the brick portion of the foundation (this section is above grade and about 4″ high. Would that help? Would that cause moisture issues?
We are on a pretty tight budget so I’d like to do as much of this work myself as possible.
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