Basement Waterproofing in Plymouth, New Hampshire, by Matt Clark's Northern Basement Systems.

Challenge

A homeowner in Plymouth, New Hampshire, reached out to Matt Clark’s Northern Basement Systems after years of dealing with water in their basement every time it rained. The problem had slowly gotten worse over time — small puddles along the walls turned into standing water that damaged storage boxes, created a musty odor, and made the basement unusable. The homeowner wanted a permanent waterproofing solution that would eliminate the moisture and protect the space for the long term. When a certified waterproofing specialist from Northern Basement Systems inspected the property, it was clear that groundwater pressure was forcing water through the wall-floor joint and small cracks in the foundation walls. The home had no effective interior drainage system, and the existing sump pump was outdated and unreliable. The discharge line outside also tended to freeze during the winter, worsening the problem.

Solution

To completely dry and protect the basement, the crew installed a full Basement Systems® waterproofing system, combining multiple proven products for maximum performance and reliability:

• CleanSpace® Wall System: A bright, durable vapor barrier was installed along the basement walls. This system prevents water vapor from passing through while directing any wall seepage down into the drainage system below. It also gives the basement a clean, finished appearance.

• WaterGuard® Interior Drainage System: Placed around the entire perimeter of the basement floor, WaterGuard collects water from both the walls and floor joints, channeling it safely to the sump pump. Its clog-resistant design ensures long-term performance.

• TripleSafe® Sump Pump System: The TripleSafe sump pump system provides triple protection — a primary pump for normal conditions, a secondary pump for heavy water flow, and a battery backup pump for power outages.

• IceGuard® Discharge Line Protection: IceGuard fittings were added outside the home to prevent frozen discharge lines, ensuring the sump system can function year-round even in New Hampshire’s cold winters.

• LawnScape® Outlet: To complete the system, the discharge line was extended to a discreet LawnScape outlet that releases water safely away from the home’s foundation without disturbing the yard.

Once the system was installed, the transformation was dramatic. The basement, which had previously been damp and unusable, is now completely dry and clean. The CleanSpace wall liner brightened the space, while the TripleSafe sump pump and WaterGuard drainage system work together to ensure no water ever reaches the surface. The IceGuard and LawnScape components protect the system through every season, guaranteeing reliable performance even during New England’s most brutal winters.

The homeowner was thrilled with the results — no more puddles, no more odor, and complete peace of mind knowing their basement is protected for life.