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Fix It From the Outside In: Exterior Waterproofing in Lanham, MD

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

24/7
Emergency Dispatch
Licensed Exterior Waterproofing service in Lanham, MD - SGP Waterproofing
Why Choose Us

Why Lanham, MD Property Owners Choose SGP Waterproofing for Exterior Waterproofing

Exterior work only pays off if the membrane, footing drain, and grading are all addressed together — fixing one without the others often leaves the underlying pressure problem unresolved. We scope the full picture before recommending excavation.

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

Excavation equipment and membrane materials are staged locally so an exterior project doesn't wait on out-of-town logistics.

3

Flat-Rate Excavation Pricing

Landscaping restoration is included in the scope, not billed as a separate surprise line item.

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 Lanham, MD
What We Do

Comprehensive Exterior Waterproofing Solutions in Lanham, MD

We scope every Exterior Waterproofing job in person before quoting it, since two properties with the same symptom rarely need the same fix.

Exterior

Foundation Excavation & Membrane Installation

This is the most comprehensive Lanham, MD waterproofing fix available, addressing the wall itself rather than just managing water after it gets in.

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 Lanham, MD water intrusion causes, and it's often the cheapest fix on this list.

Exterior

Window Well Excavation & Drainage

Window wells collecting water get excavated, fitted with a gravel bed, and tied into the exterior drain system so they stop acting as a funnel toward the foundation.

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 Lanham, MD
How It Works

Our Four-Step Exterior Waterproofing Dispatch Process

01

Call & Exterior Symptom Review

We ask about grading, downspout placement, and where interior water is showing up to narrow down the likely exterior cause.

02

On-Site Excavation Assessment

A technician walks the exterior perimeter, checks grading slope, and identifies where excavation would be needed for a membrane or footing drain fix.

03

Written Excavation Quote

You'll see linear footage, membrane type, and footing drain scope broken out with pricing before any digging starts.

04

Excavation, Membrane & Backfill

Excavation, membrane installation, and backfill for a typical residential wall section usually take a few days depending on access and weather.

Customer Reviews

Real Exterior Waterproofing Reviews From Lanham, MD Property Owners

Top rated local Exterior Waterproofing specialists in Lanham, MD
★★★★★

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

— Lanham Homeowner

★★★★★

"Excavation crew was careful with our landscaping and put everything back close to how it looked before."

— Lanham Customer

★★★★★

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

— Lanham Homeowner

★★★★★

"Fast turnaround given how much digging was involved."

— Lanham Customer

FAQ

What Lanham, MD 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?▼

We discuss landscaping impact during the estimate so there are no surprises.

How deep do you need to excavate?▼

We measure your specific foundation during the on-site inspection rather than assuming a standard 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 Lanham and Lanham, MD

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

Reliable Exterior Waterproofing contractor in Lanham, MD by SGP Waterproofing
Affordable Exterior Waterproofing solutions in Lanham, MD
Trusted Exterior Waterproofing service in Lanham, MD - SGP Waterproofing

Zip codes we serve in Lanham, MD: 20706

Lanham, MD's Exterior Waterproofing Crew Is One Call Away

One call gets you a licensed specialist, a written quote, and a same-day time window.

Call +1-866-476-1348

Our Services in Lanham, MD

Lanham is an unincorporated community and census-designated place in Prince George's County, Maryland. As of the 2020 United States Census it had a population of 11,282. The New Carrollton station (the terminus of the Washington Metro's Orange Line) as well as an Amtrak station are across the Capital Beltway in New Carrollton, Maryland. Doctors Community Hospital is located in Lanham.

Zip Codes in Lanham, MD that we also serve: 20706

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