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Gaithersburg, MD's Exterior Waterproofing Crew: Membrane, Drain Tile, and Grading

We excavate only where necessary and restore landscaping as part of the scope.

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

Why Gaithersburg, 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 Gaithersburg, MD
What We Do

The Full Scope of Our Gaithersburg, MD Exterior Waterproofing Work

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

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 Gaithersburg, MD 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

This is often bundled with grading correction since the two issues usually show up together.

24/7 Emergency Exterior Waterproofing experts in Gaithersburg, MD
How It Works

From Call to Resolution: How Exterior Waterproofing Works in Gaithersburg, MD

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

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 Gaithersburg, MD Property Owners

Top rated local Exterior Waterproofing specialists in Gaithersburg, 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."

— Gaithersburg Homeowner

★★★★★

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

— Gaithersburg Customer

★★★★★

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

— Gaithersburg Homeowner

★★★★★

"Fast turnaround given how much digging was involved."

— Gaithersburg Customer

FAQ

What Gaithersburg, MD Customers Ask Us Most About Exterior Waterproofing

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

Interior systems manage water after it enters; exterior systems stop water from reaching the wall in the first place, which is more invasive but often more permanent.

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?▼

Yes — grading correction and downspout extension are often standalone fixes that resolve a surprising number of Gaithersburg, MD water intrusion issues on their own.

How long does exterior waterproofing take?▼

A typical residential wall section with membrane and footing drain work takes a few days depending on access and weather conditions.

Service Coverage

Proudly Providing Exterior Waterproofing Throughout Gaithersburg and Gaithersburg, MD

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

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

Zip codes we serve in Gaithersburg, MD: 20899 20878 20879 20877 20884 20885 20898 20882

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

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

Call +1-866-476-1348

Our Services in Gaithersburg, MD

Gaithersburg (/ˈɡeɪθərzbɜːrɡ/ i GAY-thərz-burg), officially the City of Gaithersburg, is a city in Montgomery County, Maryland, United States. At the time of the 2020 U.S. Census, Gaithersburg had a population of 69,657, making it the ninth-largest community in the state. Gaithersburg is located to the northwest of Washington, and is considered a suburb and a primary city within the Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Statistical Area. Gaithersburg was incorporated as a town in 1878 and as a city in 1968.

Zip Codes in Gaithersburg, MD that we also serve: 20899 20878 20879 20877 20884 20885 20898 20882

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