● On call every hour of every day

Waterproofing in Long Lake, MN, Handled by a Crew That Actually Shows Up

We diagnose the real source of the water before quoting anything — no guessing, no upsell, just a plan sized to your property.

24/7
Emergency Dispatch
Licensed Waterproofing service in Long Lake, MN - SGP Waterproofing
Who We Are

The Long Lake, MN Team Homeowners Call Back a Second Time

We're a licensed, insured Waterproofing outfit built around Long Lake, MN properties specifically — the clay-heavy soil, the seasonal freeze-thaw cycles, the older basements with parged walls that were never meant to hold back a modern water table. Every technician on our crew has logged real hours crawling through wet crawl spaces, not just reading about them.

We keep our crews local rather than routing calls through a national call center, which means the technician who answers your questions on the phone is often the same person standing in your basement two hours later. That continuity cuts down on the miscommunication that drags out so many waterproofing jobs.

  • Fully licensed, bonded, and insured across Long Lake, MN
  • 24/7 emergency dispatch, 365 days a year
  • Flat-rate written estimates you approve before work begins

Soil composition changes how much hydrostatic pressure builds against a foundation wall, and Long Lake, MN's mix of clay-heavy and sandy soils behaves differently depending on the neighborhood, sometimes block to block. A crew that hasn't worked the area tends to size drainage systems using generic assumptions instead of what's actually under the yard.

We also see a lot of properties where a previous waterproofing attempt only addressed the symptom — a topical sealant painted over a cracked wall, for example — without solving the pressure or grading issue causing the crack in the first place. Part of every Long Lake, MN inspection is checking for that kind of prior patch job before we recommend anything new.

Professional Waterproofing technician working in Long Lake, MN
Problem Signs

What a Failing Foundation Actually Looks Like Before It Floods

Most Long Lake, MN water intrusion problems don't start as a flood — they start small, and they get worse on a schedule. Here's what our technicians look for on a first inspection.

Sign 01

Musty Basement Odor

A persistent musty smell almost always means moisture is present somewhere in the wall assembly, even if you can't see a wet spot yet.

Sign 02

White Powdery Efflorescence

Efflorescence forms when water carries dissolved minerals through porous concrete and leaves them on the surface as it dries — a clear sign moisture is actively passing through.

Sign 03

Hairline Wall Cracks

A crack that's a sixteenth of an inch wide today can become a sixteenth of an inch wider by next spring if the pressure behind the wall isn't relieved.

Sign 04

Damp or Bubbling Drywall

Drywall that feels soft, bubbles, or shows a tide line near the floor is already absorbing groundwater — by the time you see it, the insulation behind it is usually soaked too.

Sign 05

Window Well Flooding

If your window wells hold water for more than an hour after a storm, that water has nowhere to go but toward the seal around your basement window.

Sign 06

Standing Water After Storms

Puddling near the foundation that doesn't drain within a few hours usually means grading, gutters, or a failing perimeter drain — and it's the fastest path to a flooded basement.

What We Do

Our Core Waterproofing Services in Long Lake, MN

We scope every Long Lake, MN job in person before quoting it, because two houses with the same symptom rarely need the same fix. These are the five services that make up most of our workload.

Emergency

Emergency Waterproofing & Flood Response

A burst window well seal or a failed check valve can put inches of water in a basement in under an hour — our emergency crews carry truck-mounted extraction pumps and moisture meters to start mitigation the same day you call.

Residential

Residential Basement Waterproofing

We install interior perimeter drain systems tied into a sump basin, then finish the walls with a dimpled vapor barrier so any residual moisture is directed down, not trapped behind drywall.

Commercial

Commercial & Multi-Unit Waterproofing

Commercial jobs typically pair exterior membrane work with an interior collection system, since most existing commercial structures can't be fully excavated without major disruption.

Foundation

Foundation Crack Repair & Injection

We classify every crack before injecting it — structural cracks get epoxy, active leaks get flexible polyurethane that expands to fill voids behind the wall.

Crawl Space

Crawl Space Encapsulation & Sump Systems

We install heavy-gauge vapor barriers, seal foundation vents, and add a dedicated sump basin so a damp Long Lake, MN crawl space stops feeding moisture into the floor joists above it.

Drainage

Exterior Grading & French Drain Systems

Extending downspouts another six to ten feet away from the foundation solves more Long Lake, MN drainage problems than people expect, and we'll usually check that before recommending anything more invasive.

How It Works

From First Call to Final Walkthrough in Four Steps

01

Call & Phone Assessment

You describe what you're seeing and we ask a few questions to gauge urgency before anyone gets in a truck.

02

On-Site Inspection

We walk the interior and exterior with a moisture meter and flashlight, tracing water back to its actual entry point instead of guessing.

03

Written Quote

We put the scope, materials, and price in writing so you can compare it against anyone else's estimate line for line.

04

Installation & Walkthrough

Once installation wraps, we test the sump pump under load and walk you through the warranty paperwork before we leave the site.

Why Choose Us

Why Long Lake, MN Homeowners Pick SGP Waterproofing Over the Franchise Down the Road

1

Upfront, Flat-Rate Pricing

You'll know the total cost before we start — no hourly billing, no surprise add-ons once the walls are already open.

2

Fast Local Dispatch

Local staffing means the technician answering your call today can usually be on-site the same day, not on a waitlist behind out-of-town jobs.

3

Specialized Equipment & Training

We also carry Category 1, 2, and 3 water classification protocols for jobs where the source water isn't clean groundwater.

4

Satisfaction Guarantee

If a sealed crack reopens or a sump system underperforms within the warranty window, we come back and make it right at no extra charge.

24/7 Emergency Waterproofing experts in Long Lake, MN
Our Promise

The SGP Waterproofing Guarantee on Every Waterproofing Job in Long Lake, MN

Warranty terms vary by scope of work, and our technician will walk through exactly what's covered before you sign off on the quote — nothing vague, nothing left to interpretation.

Trusted Waterproofing service in Long Lake, MN - SGP Waterproofing
Reliable Waterproofing contractor in Long Lake, MN by SGP Waterproofing
Service Coverage

Where You'll Find Our Crews Working in Long Lake, MN

Our Long Lake coverage area extends through most of the surrounding Long Lake, MN communities. Give us a call even if your address falls just outside the zone below; we'll let you know honestly if we can reach you same-day.

Affordable Waterproofing solutions in Long Lake, MN

Zip codes we serve in Long Lake, MN: 55356

Customer Reviews

What Long Lake, MN Customers Say After the Crew Leaves

Top rated local Waterproofing specialists in Long Lake, MN
★★★★★

"Our basement flooded during a storm at 2am and someone actually picked up the phone. The crew had pumps running before sunrise and came back two days later to install the drain tile system."

— Long Lake Homeowner

★★★★★

"The crack in our basement wall had been leaking for a year before we finally called. Injection took less than an afternoon and it's been dry since."

— Long Lake Seller

★★★★★

"Our crawl space had standing water and a mold smell we couldn't get rid of. They pumped it out, encapsulated the whole thing, and added a dedicated sump discharge line."

— Long Lake Homeowner

★★★★★

"Sump pump failed overnight and flooded part of our storage room. New pump was installed with a backup battery the same afternoon we called."

— Long Lake Customer

★★★★★

"Property management hired them to fix water coming through the garage ceiling. They scheduled the membrane work in phases so we never had to close the whole garage."

— Long Lake Property Manager

★★★★★

"They found the actual source of the dampness instead of just recommending a dehumidifier and calling it done. Been dry for over a year now."

— Long Lake Homeowner

FAQ

What Long Lake, MN Customers Ask Us Most Often

How fast can a Waterproofing technician arrive in Long Lake, MN?▼

Most Long Lake, MN emergency calls get a technician on-site within a few hours; non-urgent inspections are typically scheduled within one to two business days.

Do you provide upfront pricing?▼

We quote the full scope in writing after the inspection, so there's no hourly billing or surprise change orders once installation starts.

What emergency services are available?▼

We handle active flooding, sump pump failures, and failed foundation walls with same-day dispatch, portable extraction pumps, and temporary water mitigation.

How much does basement waterproofing typically cost?▼

Pricing varies with scope, but every Long Lake, MN customer gets an itemized written estimate before any work is authorized, so there's never a guessing game.

Will you repair hairline foundation cracks or only large cracks?▼

We repair cracks of nearly any size — hairline cracks are often the easiest and least expensive to seal with polyurethane or epoxy injection before they widen.

Do you offer interior or exterior waterproofing systems?▼

The right system depends on access, budget, and what's actually driving the water in — we'll explain the trade-offs before you decide.

How long does a typical waterproofing job take?▼

A single crack injection can be done in an afternoon, while a full interior drainage system typically runs two to three days start to finish.

Do you work with insurance claims for water damage?▼

We can document moisture readings, photos, and scope of damage to support an insurance claim, though coverage and claim approval are ultimately determined by your carrier.

Is a sump pump necessary if I already have a French drain?▼

A French drain without a sump pump just relocates water to one spot; the pump is what actually discharges it away from the home.

Do you offer a warranty on your waterproofing work?▼

Yes, every interior drainage, sump, and crack repair job comes with a written warranty, and terms are explained in full before you approve the quote.

Can you waterproof a crawl space with standing water already present?▼

Standing water doesn't stop us from starting; we extract it as the first step, then proceed with vapor barrier and drainage installation.

Do you service commercial properties as well as homes?▼

Commercial scheduling is handled separately from residential dispatch so larger projects get the coordinated planning they need.

Water Doesn't Wait — Neither Do We

Call now for a free inspection and a flat-rate quote before anything gets worse.

Call +1-866-476-1348

Our Services in Long Lake, MN

Long Lake is a small city in Hennepin County, Minnesota, United States named after the lake the eastern end of town lies on. A commercial hub for the surrounding communities, Long Lake is home to many local shops and businesses. U.S. Highway 12 runs through the town. The population was 1,768 at the 2010 census.

Zip Codes in Long Lake, MN that we also serve: 55356

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