Basement Waterproofing in Kingston, NH

Kingston’s housing is newer than most towns we work in, median build 1982, and almost three in four houses here are a single detached home someone owns outright or is paying a mortgage on. New construction gets treated like a guarantee against basement problems. It is not one. A foundation poured in 1982 has had over forty years to develop the same hairline cracks and joint failures as one poured in 1952, just on a different schedule.

Pricing a Kingston job

We price full-perimeter interior drainage with a sump pump and dehumidifier after seeing the foundation, never before. Book a free inspection and walk away with a written number the same day.

Where “newer” stops meaning “immune”

A poured concrete foundation from the 1980s is not meaningfully more waterproof than one from decades earlier, concrete has always been porous, and hydrostatic pressure from saturated soil has always found the floor wall joint the same way. What is different about newer construction is that homeowners are more surprised when it happens, since they assumed a newer house had already solved this.

The four parts of the system

Interior drainage cut along the full perimeter at the floor wall joint intercepts water before it reaches the room. A sump pump, sized to the house, sends it back outside. A vapor barrier on the walls stops moisture wicking through the block itself. A dehumidifier keeps the air dry enough that mold never gets started.

What “builder grade” actually means for the system already in your basement

If your Kingston home came with a sump pump already installed, that pump was almost certainly sized to a code minimum, not to what your specific lot and soil actually produce during a wet spring. A builder-grade pump can run fine for years and still be undersized for the water your foundation is dealing with, especially once landscaping matures and changes how water moves around the house. We test what is already there before assuming it needs replacing, some builder pumps are fine, some are not, and we will tell you honestly which one yours is.

What settling has already finished doing

Most of the settling a new foundation is ever going to do happens in the first several years after the concrete is poured. A house from 1982 has had over forty years for that process to finish, which is useful information: a wet basement in an older Kingston home is very rarely still “settling in,” it is almost always a drainage problem with a fixable cause.

Check these before you call us

Surface water and groundwater cause the same symptom, a wet basement, but they get fixed differently, and it is worth ruling out the cheap one first. Walk the foundation during or right after a hard rain. If a downspout is dumping water within a few feet of the wall, extend it and watch what happens over the next storm. Check whether the ground still slopes away from the house for the first six feet. On a lot graded in the eighties, that slope is usually still intact, which is actually a point in your favor here compared to older subdivisions. If both check out and the water still comes in, that is groundwater, and no amount of downspout work will touch it.

Frequently asked questions

What a recent customer said

5 stars does not do justice for the crew and overall positive experience. From start to finish, the experience was absolutely amazing. The crew was friendly and professional. They started the waterproofing project on time and finished on schedule.

Michael Stankus, 5 stars, Google review

Housing age and unit mix: Census ACS 2023 5-yr (B25035, B25024). Review quoted verbatim, public Google review.