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Exterior Waterproofing in Allentown, NJ — Stop Water Before It Reaches the Wall

Exterior membrane systems, footing drains, and corrected grading tackle Allentown, NJ water intrusion at the source, before it ever reaches the interior wall.

24/7
Emergency Dispatch
100%
Flat-Rate Quotes
1-3
Day Turnaround
Written
Warranty Included
Licensed Exterior Waterproofing service in Allentown, NJ - SGP Waterproofing
Why Choose Us

What Sets Our Exterior Waterproofing Team Apart in Allentown, NJ

A lot of Allentown, NJ exterior waterproofing failures trace back to a footing drain that was installed without proper slope, which means it never actually moved water the way it was supposed to. We verify slope during installation, not just at design.

1

Licensed Excavation & Waterproofing Crews

Exterior work involves excavation near the foundation, and every crew member is trained and insured for that specific scope.

2

Local Equipment Staging

Weather-dependent scheduling means we plan exterior jobs around Allentown, NJ's rainy season windows when possible.

3

Flat-Rate Excavation Pricing

Pricing is quoted per linear foot of foundation wall being treated, based on an on-site measurement, not a phone estimate.

4

Dimpled Membrane & Footing Drain Systems

Membrane seams are overlapped and sealed to manufacturer spec so the barrier performs as designed for decades, not just years.

Professional Exterior Waterproofing technician working in Allentown, NJ
What We Do

The Full Scope of Our Allentown, NJ Exterior Waterproofing Work

Every Allentown, NJ Exterior Waterproofing job starts with an inspection, not a generic package — here's what that typically includes.

Exterior

Foundation Excavation & Membrane Installation

We excavate to the footing, apply a dimpled waterproof membrane directly to the foundation wall, and backfill with proper drainage material.

Exterior

Footing Drain (French Drain) Installation

We slope footing drains correctly during installation, since a flat or reverse-sloped drain simply won't move water.

Exterior

Exterior Grading Correction

Soil that slopes toward the foundation instead of away from it is one of the most common Allentown, NJ water intrusion causes, and it's often the cheapest fix on this list.

Exterior

Window Well Excavation & Drainage

We also inspect and reseal the window frame itself while the well is open.

Exterior

Downspout & Gutter Extension

Downspouts discharging within a few feet of the foundation send roof water directly toward the problem — we extend them well clear of the wall.

24/7 Emergency Exterior Waterproofing experts in Allentown, NJ
How It Works

From Call to Resolution: How Exterior Waterproofing Works in Allentown, NJ

01

Call & Exterior Symptom Review

Photos of the exterior foundation area help us plan equipment and access before the visit.

02

On-Site Excavation Assessment

We flag any utility lines or landscaping features that need special handling during excavation.

03

Written Excavation Quote

We explain what's included in landscaping restoration so there's no confusion after backfill.

04

Excavation, Membrane & Backfill

We restore grading and any disturbed landscaping as the final step before calling the job complete.

Customer Reviews

What Allentown, NJ Customers Say About Our Exterior Waterproofing Work

Top rated local Exterior Waterproofing specialists in Allentown, NJ
★★★★★

"Interior fixes hadn't worked for us — turned out the real problem was grading pushing water straight at the foundation. Exterior correction solved it."

— Allentown Homeowner

★★★★★

"They found our downspouts were dumping water two feet from the foundation. Extended them and regraded, and that alone made a noticeable difference."

— Allentown Customer

★★★★★

"Appreciated that they called in utility locates before digging near our gas line."

— Allentown Homeowner

★★★★★

"Fast turnaround given how much digging was involved."

— Allentown Customer

FAQ

What Allentown, NJ Customers Ask Us Most About Exterior Waterproofing

What's the difference between interior and exterior waterproofing?▼

We'll recommend the right approach based on what the inspection actually finds.

Will excavation damage my landscaping?▼

Some disruption is unavoidable near the foundation, but we restore grading and replant where reasonable as part of the scope.

How deep do you need to excavate?▼

Excavation typically goes down to the footing, which varies by home but is often four to eight feet depending on foundation depth.

Is exterior waterproofing more expensive than interior?▼

We'll walk through both options and their trade-offs so you can make an informed choice.

Can you fix grading without a full exterior membrane project?▼

We'll recommend starting there if the inspection suggests surface water is the primary cause.

How long does exterior waterproofing take?▼

Larger projects or difficult access points can extend the timeline, which we'll outline in the written quote.

Service Coverage

Proudly Providing Exterior Waterproofing Throughout Allentown and Allentown, NJ

Exterior jobs depend on access and weather — call +1-866-476-1348 and we'll confirm scheduling for your specific Allentown property.

Reliable Exterior Waterproofing contractor in Allentown, NJ by SGP Waterproofing
Affordable Exterior Waterproofing solutions in Allentown, NJ
Trusted Exterior Waterproofing service in Allentown, NJ - SGP Waterproofing

Zip codes we serve in Allentown, NJ: 08501 8501

Get Exterior Waterproofing Handled Before It Gets Worse

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

Call +1-866-476-1348

Our Services in Allentown, NJ

Allentown is a borough, located in western Monmouth County, in the U.S. state of New Jersey, bordering nearby Mercer County. As of the 2020 United States census, the borough's population was 1,734, a decrease of 94 (−5.1%) from the 2010 census count of 1,828, which in turn reflected a decline of 54 (−2.9%) from the 1,882 counted in the 2000 census. The borough is nestled within central New Jersey, and is roughly equidistant between New York City and Philadelphia.

Zip Codes in Allentown, NJ that we also serve: 08501 8501

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