We diagnose the actual water source before we quote anything — no guessing, no upsell, just a plan sized to your basement.

Basement waterproofing mistakes usually come down to one thing: fixing the symptom instead of the source. A contractor who paints over a wet wall without checking cove joint condition or exterior grading is setting you up for the same call again in a year or two.
We're bonded and insured for both residential and light commercial basement work across New London, MN.
Our New London, MN crews are staffed locally, so a wet basement call doesn't sit in a national queue for a week.
No hourly billing and no change orders once your basement floor is already open.
Thermal imaging helps us confirm whether a stain is active moisture or an old, already-fixed leak.

We scope every Basement Waterproofing job in person before quoting it, since two properties with the same symptom rarely need the same fix.
We route drain tile beneath the existing slab line so flooring disruption stays minimal during installation.
Battery backup is available for any sump system, so a power outage during a storm doesn't undo the whole fix.
The cove joint where the floor meets the foundation wall is one of the most common New London, MN leak points, and we seal it as part of every interior system.
A dimpled plastic membrane behind any finished basement wall channels residual moisture down to the drain tile instead of trapping it behind drywall.
Poor window well drainage is one of the most overlooked New London, MN basement leak sources, and it's often the cheapest fix on the list.

You describe what you're seeing — a wet spot, a musty smell, standing water — and we get a rough read on urgency before dispatching anyone.
We also check exterior grading and downspouts, since a lot of basement leaks start outside, not inside.
You'll see drain tile footage, sump specs, and labor broken out separately, not one vague lump-sum number.
Most residential basement jobs finish in one to three days, and we test the sump pump under load before we leave.

"We'd patched a basement crack twice ourselves before calling. The interior drain tile system actually fixed it instead of just hiding it again."
— New London Homeowner
"Water came in around our window well every time it rained hard. They regraded it and added a drain line — problem solved."
— New London Customer
"They walked us through exactly why the water was coming in before quoting anything, which no one else had bothered to do."
— New London Homeowner
"Installed a battery backup sump pump for us right before a big storm season — glad we did it when we did."
— New London Customer
Every New London, MN quote is itemized in writing so you can see exactly what drives the total.
Yes — interior drain tile requires cutting a channel along the slab edge, which we patch with concrete once the system is installed.
Larger basements or those needing extensive crack repair can take a bit longer — we'll give you a realistic timeline in the written quote.
Not always — an isolated, non-leaking crack can sometimes be handled with injection alone.
We provide photos and moisture readings that many New London, MN homeowners have used to support a claim.
Warranty terms are often transferable if you sell the property later.
We install interior drain tile and sump systems throughout New London and the surrounding New London, MN service area, including the zip codes listed below.



Zip codes we serve in New London, MN: 56273
One call gets you a licensed specialist, a written quote, and a same-day time window.
Call +1-866-476-1348© SGP Waterproofing. All rights reserved.