Mortar at Top of Foundation Wall
I’m in the middle of finishing my basement. I’ve been following a bunch of the articles on this awesome site with regards to insulating the basement walls and air sealing. I just finished demoing most of the exterior walls in preparation for EPS rigid foam board on the walls. I was planning to also put rigid foam on the top of the foundation walls from the sill plate to the wall edge. However, I noticed there’s some cement at the top of the wall that runs along the entire perimeter of the top of the wall. It’s a different color from the poured foundation walls. It’s very brittle and I’m no sure what purpose it serves? I don’t know if it was done more recently than when the house was built. I’m wondering is it safe/worth removing what I can so I can lay my EPS foam on top of the wall? Also to note the basement walls are bone dry and show now signs of water or efflorescence anywhere so I don’t believe it was to seal against water?
Attached a picture of it.
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