Groundwater & Basement Water Intrusion in Pottstown, PA

Yes, and it is the most common source of frustration in this housing stock. Solid brick absorbs a large volume of water and gives it back slowly, so the wood framing and the plaster can meet targets while the masonry is still wet. Equipment removed at that point leaves the walls to re-wet the finishes over the following weeks. Ask for readings taken in the masonry, and expect a longer schedule than a frame house would need.

In a twin or a rowhouse that is a single wet assembly rather than two separate problems. The party wall, the floor framing, and often the roof are continuous, so water crosses the property line inside the structure. Drying only your side leaves moisture in the shared wall that will come back through. Coordinating access early, before either owner starts repairs, is the practical difficulty and it is worth solving quickly.

Seriously, because the largest floods on record on this river came from exactly that. Remnants tracking up the valley have delivered rainfall far beyond anything the ordinary seasonal pattern produces, and the response of a narrow valley is fast. For properties on the low ground the useful decision point is a day or two out, when the forecast rainfall for the watershed is known, rather than when the river starts to rise.