Basement Waterproofing Quad Cities

Why Does My Basement Keep Leaking and What Can I Do About It?

You mop it up. You plug the corner. You move the boxes away from the wall. And then it rains again and the water is back.

If you live in the Quad Cities, whether it’s Davenport, Moline, Rock Island, or Bettendorf.. this probably sounds familiar. Many homes in our region deal with basement water problems that just won’t quit. And despite all the DIY patching and hardware store fixes, the core issue is often left unaddressed: hydrostatic pressure.

At Tomlinson Cannon, we’ve spent decades helping homeowners solve this once and for all–with permanent solutions that work with your foundation, not against it.

What’s Really Causing the Water in Your Basement?

It’s easy to blame the old windows or gutters, but most recurring basement leaks stem from something less obvious: groundwater pressure building up under and around your foundation.

This pressure (called hydrostatic pressure) doesn’t care how clean your gutters are. It pushes moisture through tiny cracks, along wall joints, and under the slab. And once water finds a path, it keeps coming back.

Basement Waterproofing Quad Cities: What Actually Works

The solution depends on the problem and the house. That’s why we always start with a free assessment. Once we understand how water is moving around your foundation, we design a strategy built for your home and budget.

Here’s how we tackle it:

Subsurface Drainage Systems

Our drain tile installations relieve water pressure before it can enter your home. These systems are installed out of sight but make a huge difference during heavy rains.

Sealing the Leaks

If you’re seeing isolated moisture or wet spots near cracks, we may recommend wall crack injection using expanding polyurethane. It’s a targeted, non-invasive solution that seals from the inside out.