Serving Saint Paul
Groundwater & Basement Water Intrusion in Saint Paul, MN
Basement seepage, failed sumps, and hydrostatic pressure against the foundation are extracted and dried, and the path from the ground is identified so the loss does not repeat. Groundwater and basement seepage are extracted and dried only after the path from the soil is identified — a wall, a slab, a drain, or a failed sump. Drying the interior without stopping that path returns the same water to the same floor.
Frequently asked questions
What does building on sandstone change about a wet basement?
It changes how concentrated water behaves. St. Peter sandstone is weakly cemented and erodes when flow is aimed at it, so a downspout or a broken lateral discharging against the bluff face can undercut material rather than simply wetting it. Diffuse seepage is a drainage job; a concentrated stream is an erosion job. Carry roof water well past the wall before anyone treats the inside face as the whole repair.
Why does the cellar flood at snowmelt rather than during a June storm?
Because winter prepares the openings. Deep frost widens joints and cracks over several months, and the melt then delivers a large volume into paths that were smaller before the freeze. June rain meets a wall that has not just spent a season being worked open. Extraction after melt is often a short, high-volume event against the uphill wall, not a slow summer seep.
The house sits above the river. Shouldn't the slope drain the water away?
For surface water on the downhill side, yes. For the uphill wall, no. Slope carries rain away from the low side but sends subsurface water toward whatever is cut into the hill. On a bluff lot the uphill foundation is a retaining wall, and it is usually the first to show standing water. Perimeter drainage at that cut matters more than the view of the river.
The Saint Paul overview carries this FAQ with the city research.