📞 Call +1-866-476-1348
● Open 24/7 for emergency calls

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

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

Licensed Exterior Waterproofing service in Gaithersburg, MD - SGP Waterproofing
Why Choose Us

What Sets Our Exterior Waterproofing Team Apart in Gaithersburg, MD

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

We call in utility locates before any digging starts, standard on every Gaithersburg, MD exterior job.

2

Local Equipment Staging

Weather-dependent scheduling means we plan exterior jobs around Gaithersburg, MD'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 Gaithersburg, MD
What We Do

What Our Exterior Waterproofing Service Actually Covers

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 Gaithersburg, MD waterproofing fix available, addressing the wall itself rather than just managing water after it gets in.

Exterior

Footing Drain (French Drain) Installation

A perforated footing drain collects groundwater at the base of the foundation and routes it away before it can build pressure against the wall.

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

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

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

What Happens After You Call SGP Waterproofing for Exterior Waterproofing

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

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

What Gaithersburg, MD Customers Say About Our Exterior Waterproofing Work

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

★★★★★

"Footing drain from the original builder had failed completely. New one actually slopes correctly and moves water like it should."

— Gaithersburg Customer

FAQ

Frequently Asked Questions 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?

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?

Generally yes, since it involves excavation, but it addresses the source of water intrusion rather than managing symptoms after entry.

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

Exterior Waterproofing Coverage Across Gaithersburg and Surrounding Gaithersburg, MD Communities

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

Get Exterior Waterproofing Handled Before It Gets Worse

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

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

Cities Close To Gaithersburg, MD That We Also Serve


Exterior Waterproofing Express #1
★ 4.9 (120+ Reviews)
Dispatch Center, MD
Call +1-866-476-1348
Exterior Waterproofing Express #2
★ 4.9 (120+ Reviews)
Dispatch Center, MD
Call +1-866-476-1348
Exterior Waterproofing Express #3
★ 4.9 (120+ Reviews)
Dispatch Center, MD
Call +1-866-476-1348
Exterior Waterproofing Express #4
★ 4.9 (120+ Reviews)
Dispatch Center, MD
Call +1-866-476-1348
Exterior Waterproofing Express #5
★ 4.9 (120+ Reviews)
Dispatch Center, MD
Call +1-866-476-1348
Exterior Waterproofing Express #6
★ 4.9 (120+ Reviews)
Dispatch Center, MD
Call +1-866-476-1348
🟢 Techs On Duty in Gaithersburg, MD Call +1-866-476-1348