Basement Waterproofing Photo Album: Failing Sump Pump Repair in Londonderry, NH

In Londonderry, NH, as you can see in the before photos, a homeowner faced persistent flooding in a basement due to an inadequate sump pump not handling the high water table. We addressed this by installing our WaterGuard sub-floor drainage system, visible beneath fresh concrete, to channel seepage away. Notice in the after photos how our TripleSafe Sump Pump and IceGuard discharge lines add reliable protection against high water volumes and freezing, providing a permanently dry space.

Failing Sump Pump

The existing sump pump system was overwhelmed by the volume of groundwater surrounding the basement, leading to hydrostatic pressure that forced water infiltration through cold joints in the foundation.

Wet Basement Floor

Due to ongoing water intrusion, the basement environment was at increased risk for microbial growth, wood deterioration, and damage to stored belongings and utilities.

WaterGuard

To manage water intrusion, the WaterGuard drainage system was installed along the interior perimeter at the footing level of the foundation. This system is engineered to intercept groundwater before it reaches the basement floor surface, channeling it efficiently to the sump pump system for removal.

TrenchDrain

TrenchDrain, a surface-level drainage solution typically used where traditional sub-floor systems like WaterGuard are not feasible, was installed at the doorway threshold. It integrates seamlessly with the WaterGuard system, creating a continuous drainage path that directs surface and subsurface water to the sump pump for efficient removal.

TripleSafe Sump Pump

As water collected by the WaterGuard system enters the sump basin, a three-stage pumping system activates as needed to ensure continuous water evacuation. This includes a primary pump for routine discharge, a secondary pump that engages during periods of elevated water intrusion-such as heavy rainfall or snowmelt-and a battery backup pump that provides critical protection during power outages, maintaining system functionality under all conditions.

IceGuard

Water is discharged from the sump system through an exterior drainage line that exits the home's siding. To safeguard against potential blockages caused by freezing conditions, an IceGuard® fitting is installed on the discharge line. This freeze-resistant overflow component ensures that, even in rare cases of line obstruction due to ice, water can still be expelled from the system-preventing backups and further reducing the risk of basement flooding.

Bubbler Pot

A bubbler pot was installed at the termination point of the discharge line to disperse water below the surface, preventing pooling and saturation of the lawn. The discharge line was then buried to maintain the property's aesthetic appeal and protect the system from surface damage or interference.