Sump Pump Installation

What a sump pump actually does

A sump pump does not waterproof anything. It is the discharge end of a drainage system: the part that takes water your weeping tile has already collected and moves it out of the building.

That distinction matters, because a pump installed without a drainage system feeding it will sit in a hole doing very little while water continues to enter elsewhere. When someone offers to fix a wet basement by dropping in a pump, they are treating a symptom.

Installed as part of a properly built system, though, it is the component your dry basement depends on most, and it is the one most likely to fail.

The details that decide whether it works

A sealed basin, not an open pit. An open sump is an evaporating pool of groundwater in your basement, and it is a leading cause of the musty smell homeowners blame on their walls. In parts of Nova Scotia with elevated radon it is also a direct soil-gas entry point into your living space. A sealed lid with a gasketed pump access and a proper vent costs very little more.

A check valve on the discharge. Without one, every time the pump shuts off, the column of water sitting in the discharge pipe runs straight back into the basin. The pump refills, restarts, and pushes the same water up again. It short-cycles, it wastes its service life, and it never actually gets ahead.

Freeze relief on exterior discharge. In an Atlantic winter, the exposed end of a discharge line can freeze closed. If it does, the pump dead-heads. It runs against a solid block of ice until the motor burns out, and then your basement floods. A relief fitting gives the water somewhere to escape near the house if the main line is blocked. It is a small part that prevents a total system failure.

Discharge that actually leaves. A line that dumps three feet from the foundation puts the water straight back into the saturated soil your drainage system is trying to relieve. The pump then removes it again. We route the discharge far enough away, downgrade, that it drains off for good.

Battery backup is not an upsell

Consider the sequence in a typical Nova Scotia storm event. A post-tropical system arrives, drops 80 to 150 mm of rain over several hours, saturates the soil, and drives the water table up. At the same time, wind brings down limbs and the power goes out, sometimes for a day or more.

Your basement is now taking on the most water it will see all year, and your pump has no electricity.

A battery backup system is a second pump, mounted above the primary on its own float switch, wired to a deep-cycle battery kept on a maintainer. When the primary loses power or fails, the backup starts automatically. Most units will run for several hours of intermittent cycling, and the alarm tells you it has engaged.

If you install one thing beyond the basics, install this.

Replacing an existing pump

If your pump is more than about eight years old, is noisy, cycles constantly, or you simply do not know how old it is, it is worth having looked at. Replacement is a straightforward visit. We will also check the check valve, the float travel, the basin seal, and the discharge routing while we are there, because those four things cause more basement floods than pump failure itself.