Parging or motar?
I will be excavating my 85+ yr old poured rubble foundation this spring in order to get the proper drainage and to repair areas where the motar has disintegrated to the point where I can fit the length of my fingers into some joints. It is happening predominantly on one side of the house where the brick is also starting to crumble. What is the best material to be using for this repair…repointing with brick mortar or using parging with bonding agents. Alternatively is there a sand/lime/portland mix that I can prepare myself. The mortar decay has also been happening on the interior side in some areas only. The mortar has simply turned to grey sand and I am able to remove full stones from the wall. Can I use the same mix on the interior as on the exterior?
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