Serving Lynn
Groundwater & Basement Water Intrusion in Lynn, MA
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
The basement is damp on a schedule rather than after storms.
Near the marsh edge that usually means a tidal water table. Ground here is filled marsh with a table that rises and falls with the harbor, so a cellar cut close to that range is damper at high water regardless of the weather. Comparing when it is wet against a tide table generally reveals the pattern within a week, and it moves the remedy from hunting for a leak to managing groundwater with a drain and a pump.
Why do the low streets flood without much rain?
Because the drainage there discharges to tidal water and at high tide there is no head available. A moderate rain arriving on a storm tide has nowhere to go, while a heavier rain six hours later drains normally. Nothing has to be blocked for it to happen. Watching the tide alongside the forecast is genuinely useful in the low neighborhoods and irrelevant up on the hills.
Our house and the neighbor's are three feet apart.
On lots this tight the gap between buildings is often the lowest ground on both properties, and both roofs discharge into it. That concentrates a great deal of water against two foundations at once. Extending both downspouts to the street, or to a shared drain, removes the concentration and is usually cheaper than anything done to either wall. It works best as a joint fix rather than each side piping water toward the other.
This FAQ belongs to the Lynn page; it is repeated here.