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Exterior Waterproofing in Lake Oswego, OR — Stop Water Before It Reaches the Wall

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

Licensed Exterior Waterproofing service in Lake Oswego, OR - SGP Waterproofing
Why Choose Us

Four Reasons Our Exterior Waterproofing Clients Don't Call Anyone Else

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 Lake Oswego, OR exterior job.

2

Local Equipment Staging

Weather-dependent scheduling means we plan exterior jobs around Lake Oswego, OR'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

We install dimpled membrane rated for below-grade use, paired with a footing drain that ties into your existing or new drainage system.

Professional Exterior Waterproofing technician working in Lake Oswego, OR
What We Do

What Our Exterior Waterproofing Service Actually Covers

Every Lake Oswego, OR 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 Lake Oswego, OR 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 Lake Oswego, OR
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

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

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

Customer Reviews

Real Exterior Waterproofing Reviews From Lake Oswego, OR Property Owners

Top rated local Exterior Waterproofing specialists in Lake Oswego, OR
★★★★★

"Membrane and footing drain install took three days but the wall that used to weep every storm has been bone dry since."

— Lake Oswego Homeowner

★★★★★

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

— Lake Oswego Customer

★★★★★

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

— Lake Oswego Homeowner

★★★★★

"Fast turnaround given how much digging was involved."

— Lake Oswego Customer

FAQ

Exterior Waterproofing Questions We Hear Every Week

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?

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

Service Coverage

Where Our Exterior Waterproofing Crews Work in Lake Oswego, OR

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

Reliable Exterior Waterproofing contractor in Lake Oswego, OR by SGP Waterproofing
Affordable Exterior Waterproofing solutions in Lake Oswego, OR
Trusted Exterior Waterproofing service in Lake Oswego, OR - SGP Waterproofing

Zip codes we serve in Lake Oswego, OR: 97034 97035 97036

Don't Wait On Exterior Waterproofing — Call Now

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

Call +1-866-476-1348

Our Services in Lake Oswego, OR

Lake Oswego (/ɒsˈwiːɡoʊ/ oss-WEE-goh) is a city in the U.S. state of Oregon, primarily in Clackamas County, with small portions extending into neighboring Multnomah and Washington counties. Population in 2020 was 40,731, a 11.2% increase since 2010. Located about 7 miles (11 km) south of Portland and surrounding the 405-acre (164 ha) Oswego Lake, the town was founded in 1847 and incorporated as Oswego in 1910. The city was the hub of Oregon's brief iron industry in the late 19th century, and is today a suburb of Portland.

Zip Codes in Lake Oswego, OR that we also serve: 97034 97035 97036

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🟢 Techs On Duty in Lake Oswego, OR Call +1-866-476-1348