Insulating basements and keeping them dry
Ok so read a lot about insulating and keeping basements dry on this website just wanted to ask questions for my particular situation. My house is old built in 1903 so I don’t believe the walls are poured concrete, I think it’s masonry walls covered with a layer of stucco because I did some work at one point and found stone within walls. I don’t believe they were pouring concrete foundations in the early 1900’s. On one exterior wall in basement I have dampness on floor, the walls are dry. I read that if you don’t have poured concrete you should damp proof, building a sump pump would not be a good idea. Is this true? Most of my walls are above grade except for wall in front of basement which is dry and the wall that is showing moisture on floor. The side that has dampness is about 1/3 above grade the rest is buried in dirt and gravel. At some point before I bought the house a drainage system was installed on this wall that alleviated a flooding problem. So questions based on this set up.
1. Since I’m mostly above grade would insulating the walls on outside be a better option, or can I combine it depending on what walls are above or below grade.
2. Floor is unlevel in spots, can I break up entire floor and insulate it without underpinning or benching and re cement it. Insulating under the slab would save precious headroom. I heard it’s possible to drop an inch or two if you are still above foundation but how would I know how deep I can go. I could test a corner but will I literally see the bottom of footing?
3. If water or moisture is only collecting near that one wall and wall is dry can I literally build a trench, remove dirt, and throw gravel in. I actually suspect moisture is coming from underneath slab.
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