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Expert Waterproofing Services in Lemont, IL — Licensed, Guaranteed, Fast

From basement flooding to foundation seepage, Arrow Tight Waterproofing has protected properties across Lemont, IL with industrial-grade waterproofing systems. Call now — crews are standing by 24/7.

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12,000+ Jobs Completed
97% Customer Satisfaction
24/7 Emergency Line
10+ Yrs In Business
Licensed Waterproofing service in Lemont, IL - Arrow Tight Waterproofing
Certified & Insured
Statewide Coverage in IL
Written Lifetime Guarantee
Same-Day Emergency Dispatch
Professional Waterproofing technician working in Lemont, IL
Who We Are

The Waterproofing Team Lemont, IL Calls When It Matters

Arrow Tight Waterproofing was built by tradespeople who got tired of seeing homeowners in Lemont, IL get sold band-aid fixes. We specialize in permanent waterproofing solutions — interior drainage systems, exterior membrane applications, crack injection, and crawl space encapsulation — using commercial-grade materials that hold up decade after decade.

We're not a general contractor who does waterproofing on the side. Every job we take — whether it's a sump system installation, a foundation crack repair, or full exterior waterproofing — is handled by specialists. No subcontracting, no handoffs, no surprises on the invoice.

  • ✓ IICRC-Certified Waterproofing Technicians
  • ✓ Commercial-grade materials on every residential job
  • ✓ Permit-ready crews with full insurance documentation
  • ✓ Transferable written warranty on all installed systems
  • ✓ No-subcontractor policy — your crew is our crew
📞 Call Arrow Tight Waterproofing Now
Know the Warning Signs

8 Signs Your Lemont Property Needs Waterproofing Right Now

Water damage rarely announces itself dramatically at first. It starts quiet — a damp smell, a hairline crack, a white powder on the concrete. By the time it's obvious, you've lost weeks of containment. Here's what to catch early.

1

Efflorescence on Block or Poured Walls

That white chalky residue isn't cosmetic — it's mineral salt deposited by water that has already penetrated your foundation wall.

2

Horizontal or Stair-Step Foundation Cracks

Vertical cracks are often settling. Horizontal cracks in block foundations indicate lateral soil pressure — a structural emergency, not just a cosmetic issue.

3

Musty Odor After Rain Events

Mold and mildew require only 24–48 hours of elevated moisture to colonize. A musty smell after rain means your vapor barrier has failed or doesn't exist.

4

Visible Seepage at Wall-Floor Joint

The cove joint — where the floor slab meets the foundation wall — is the most common water entry point in basement systems. Staining or pooling there means hydrostatic pressure is actively pushing in.

5

Peeling Paint or Bubbling Drywall

Paint and drywall absorb moisture vapor before you can see liquid water. Bubbling or peeling in a below-grade space is almost always a moisture problem, not a paint adhesion failure.

6

Sump Pump Running Constantly

A sump pump that cycles every few minutes — or runs non-stop — is managing a groundwater situation your current system wasn't designed for. It will burn out, and the next flood won't wait for a replacement.

7

Rust Stains on Concrete or Block

Rust streaks on foundation walls mean moisture is reaching and oxidizing the rebar or metal lath inside your block or poured concrete — water that deep is already compromising structural integrity.

8

Cracks in the Floor Slab

Hairline slab cracks that weep during wet weather indicate hydrostatic pressure building under the slab. Left alone, that pressure will widen the cracks and lift sections of the floor.

What We Do

Complete Waterproofing Services for Lemont, IL Properties

Arrow Tight Waterproofing doesn't sell one-size-fits-all waterproofing packages. We diagnose the entry point, the pressure source, and the existing drainage condition — then we build the solution around what your specific property needs.

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Interior French Drain & Perimeter Drainage Systems

Interior drain tile systems collect groundwater at the footing level before it enters your living space. We saw-cut the slab perimeter, excavate to the footing, install gravel-bed perforated pipe, and tie it into a sump system with battery backup — so you stay dry even during power outages.

These systems don't fight hydrostatic pressure — they redirect it.

📞 Get a Free Drainage Quote →
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Exterior Foundation Waterproofing & Membrane Application

Exterior waterproofing is the most comprehensive solution available — stopping water before it contacts your foundation wall. We excavate to the footing, apply a rubberized polymer membrane to the exterior foundation face, install dimple-mat drainage board, and backfill with clean crushed stone to redirect surface water away from the structure.

This approach solves the problem at the source: water never reaches your interior wall surface.

📞 Schedule an Exterior Assessment →
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Structural Crack Repair: Injection & Carbon Fiber Stapling

Poured concrete foundation cracks are repaired from the interior using high-pressure polyurethane or epoxy injection — the appropriate chemistry depends on whether the crack is actively leaking or dry. Polyurethane foam expands into wet, actively leaking cracks and cures flexible, accommodating minor future movement. Epoxy injection is used in dry cracks where structural bond restoration is the goal.

For concrete block foundation walls showing horizontal cracking or inward bowing, we pair crack repair with carbon fiber reinforcement straps anchored at the floor and rim joist.

📞 Get a Crack Injection Estimate →
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Crawl Space Moisture Control: Encapsulation to Full Waterproofing

We install a minimum 20-mil reinforced poly vapor barrier over the entire crawl space floor and seal it up the walls to the sill plate — then seal all vents, install a conditioned air supply or dedicated crawl space dehumidifier, and spec a sump system if groundwater is present.

Encapsulation turns your crawl space from an uncontrolled dirt floor into a semi-conditioned space.

📞 Schedule a Crawl Space Inspection →
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Sump Pump Installation, Replacement & Battery Backup Systems

A sump pump is only as reliable as its installation and backup plan. We install primary pumps — typically 1/2 to 3/4 HP cast iron submersibles with a minimum 10-year rating — alongside battery-operated backup systems that activate automatically when your primary pump fails or power goes out.

For finished basements and properties with high groundwater, we recommend a dual-pump system: a primary submersible at normal operating level and a pedestal backup set two inches higher.

📞 Get a Sump System Quote →
🪟

Window Well Drainage & Egress Window Waterproofing

Basement window wells are one of the most underestimated water entry points in residential waterproofing. When the well drain becomes clogged or the well itself is sized incorrectly for your roof drainage load, water pools against the window frame and enters through the sill, the window-to-frame joint, or the block wall directly adjacent.

Window well covers are a maintenance measure, not a waterproofing solution — but paired with proper drainage installation.

📞 Book a Window Well Assessment →
Why Arrow Tight Waterproofing

Why Lemont Property Owners Choose Arrow Tight Waterproofing Over the Competition

We're not going to tell you we're the cheapest or the biggest. We're going to tell you what we actually do differently — and why it leads to better outcomes for your property and your wallet long-term.

01

We Diagnose Before We Quote

Every estimate begins with a physical inspection of every visible moisture entry point.

02

We Use the Same Products as Commercial Contractors

We purchase materials from professional waterproofing suppliers, not retail channels.

03

We Pull Permits. We Carry Coverage. We're On Record.

Arrow Tight Waterproofing holds an active contractor's license in IL and carries $2M general liability plus workers' compensation on every crew member.

04

The Price We Quote Is the Price You Pay

Our proposals are itemized: materials, labor, drainage footage, discharge line run, and any accessory items listed separately.

05

Our Guarantee Goes With the House, Not the Homeowner

We put our warranty in writing, registered to your property address, with a clear scope of what's covered and the process for filing a service claim.

06

Active Flooding? We Dispatch Immediately in Lemont, IL

Water emergencies don't schedule themselves around business hours.

📞 Get Your Free Waterproofing Assessment
How It Works

What to Expect When You Call Arrow Tight Waterproofing

1

Call or Request Online

Call +1-866-476-1348 or fill out our contact form. A live dispatcher answers around the clock. We'll get your address and route a technician based on availability and urgency.

2

Free On-Site Inspection & Diagnosis

A certified technician visits your property, conducts a full moisture inspection including thermal imaging and meter readings, identifies every active entry point, and documents the drainage pattern. No high-pressure sales tactics — just data.

3

Receive Your Written, Itemized Proposal

The proposal covers every item: materials, drainage footage, labor, discharge routing, and any permit fee. The number on the proposal is the number on the invoice.

4

Professional Installation — Then Warranty Documentation

{Our crew completes the installation to the approved scope. On completion, we conduct a post-installation moisture check, walk you through the system, and provide the written warranty documents registered to your property address.|Installation is completed by our direct-employee crew. We clean up the jobsite, verify pump function and discharge routing, take post-install moisture readings, and hand you the warranty documentation before we leave.}

Water Problems Don't Fix Themselves. We Do.

Our crews are standing by to assess your Lemont property. Free inspection, written estimate, no obligation. Call now — we answer 24/7.

📞 Call Now: +1-866-476-1348
Real Customer Reviews

Hear It From Customers Who Hired Us Across Lemont, IL

★★★★★

"The crew showed up within 3 hours of my call at 9 PM on a Tuesday. I had water coming in through a crack in my poured wall at the floor joint — had been watching it for two seasons and finally called when it started spreading. They installed an interior drain system along two walls and a new sump pit. The work took two days. I've had three major rain events since then — completely dry. Worth every dollar.Highly recommend the whole crew."

M
Michael R. Basement Waterproofing Client
★★★★★

"I've had two other companies look at my foundation crack before these guys. Both gave me vague proposals and neither one could tell me exactly why I had water or where it was coming in. Arrow Tight Waterproofing came out, brought a thermal camera, and showed me on screen exactly where the moisture was concentrated. The polyurethane injection they did on the crack has held for 18 months now with zero seepage. That's the most competent inspection I've ever gotten from a contractor.That kind of result speaks for itself."

S
Sandra T. Foundation Crack Repair Client in Lemont, IL
★★★★★

"I bought a house in Lemont, IL knowing it had a moisture issue in the crawl space — previous owners had put down a thin plastic sheet that was doing nothing. Arrow Tight Waterproofing encapsulated the entire crawl space with a 20-mil liner, sealed the vents, and installed a dehumidifier. Within two weeks my downstairs floors stopped feeling cold and damp and the musty smell completely disappeared. The technician walked me through every step before starting. No surprises on the invoice.That kind of result speaks for itself."

D
David K. Homeowner in Lemont, IL
★★★★★

"We had a window well that flooded every time we got more than an inch of rain. The well was filling up and water was coming straight in through the window sill joint. The fix was a regraded well with a perforated pipe tied into our existing interior drain. The whole job took one day. The crew was professional, cleaned up completely, and the well has handled every storm since without an issue.That kind of result speaks for itself."

L
Lisa M. Homeowner
★★★★★

"Called Arrow Tight Waterproofing after my old sump pump failed during a storm and I had 4 inches of water on my basement floor. They answered at midnight, arrived within an hour, and had a temporary pump running within 20 minutes of showing up. Once the emergency was managed, they walked me through a permanent drainage system upgrade. That was 8 months ago — I've had 6 rain events including one significant storm and the basement has stayed dry.I'd recommend them to anyone dealing with the same problem."

J
James W. Homeowner
★★★★★

"As a commercial property manager overseeing several buildings in Lemont, IL, I've worked with a lot of waterproofing contractors. Arrow Tight Waterproofing is the first one that showed up to the initial walk with a written inspection checklist and completed it on-site before quoting. Every other contractor just eyeballed it and sent a number. Their exterior membrane on the building we had done 3 years ago is holding perfectly with zero callbacks.That kind of result speaks for itself."

A
Angela F. Multi-Property Client
24/7 Emergency Waterproofing experts in Lemont, IL
Common Questions

What Lemont Homeowners Ask About Waterproofing

The distinction comes down to where the water pressure is coming from — interior drainage handles water at the cove joint and lower wall.
Crack injection: half a day to a full day. Interior perimeter drain system: 1–3 days for most residential basements.
Yes — and the mechanism is twofold. First, a documented, professionally installed waterproofing system with a transferable warranty eliminates a major disclosure item that typically requires negotiation or price reduction during a sale.
Standard homeowner's insurance policies generally exclude damage from groundwater seepage, which is classified as a "maintenance issue." Sudden and accidental water damage from a burst pipe or equipment failure is typically covered.
Waterproofing costs vary significantly based on the solution required, the perimeter footage, and the existing drainage conditions. Interior drain tile systems for a standard residential basement typically run $4,000–$12,000.
Damp-proofing is the asphalt coating sprayed on new foundations during construction. It costs the builder very little, is not rated for hydrostatic head pressure, and typically fails within 10–20 years.
You generally don't need to leave. Interior drainage work involves concrete cutting (noisy for a portion of the first day) and we use dust barriers and HEPA vacuums at the saw.
Foundation wall cracks typically result from two forces: differential settlement (one part of the foundation moving more than another as soil consolidates beneath it) and hydrostatic pressure (water-saturated soil exerting lateral pressure against the wall).
Interior systems: fully year-round. The work is inside, unaffected by outdoor temperatures or rain.
A properly installed interior drainage system and sump pump system requires minimal maintenance, but that minimal maintenance matters. Test your sump pump every 6 months by pouring water into the pit.
A dirt floor crawl space — even one with no visible water — maintains near-100% relative humidity at the ground surface, and that moisture migrates upward by diffusion and stack effect air movement. You don't need standing water to have a moisture problem in a crawl space.
Service Area

Arrow Tight Waterproofing Serves All of Lemont, IL — Including Lemont

Arrow Tight Waterproofing provides Waterproofing services across the full extent of Lemont, IL. Whether you're in a densely populated metro area or a rural property 40 miles from the nearest hardware store, our crews are dispatched from regional staging points to keep response times short and service costs predictable.

Our Lemont team handles everything from single-family residential basements to commercial foundations. If you're in Lemont, IL and have a water intrusion problem, we service your area. Call +1-866-476-1348 to confirm your address is covered — it almost certainly is.

Basement Waterproofing Foundation Crack Repair Crawl Space Encapsulation Sump Pump Systems Exterior Waterproofing Window Well Drainage Emergency Response Commercial Properties
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Reliable Waterproofing contractor in Lemont, IL by Arrow Tight Waterproofing
Zip Codes in Lemont, IL We Serve: 60439
Our Services

Our Services in Lemont, IL

Basement Waterproofing
Crawl Space Encapsulation
Foundation Crack Repair
Sump Pump Installation
Exterior Waterproofing
Interior Drainage System
Wet Basement Repair
Vapor Barrier Installation
Emergency Waterproofing
🟢 Techs On Duty in Lemont, IL Call +1-866-476-1348