● On call every hour of every day

Exterior Waterproofing in Kelso, WA — Stop Water Before It Reaches the Wall

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

24/7
Emergency Dispatch
Licensed Exterior Waterproofing service in Kelso, WA - 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 Kelso, WA exterior job.

2

Local Equipment Staging

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

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 Kelso, WA
What We Do

Comprehensive Exterior Waterproofing Solutions in Kelso, WA

Every Kelso, WA 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

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 Kelso, WA 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 Kelso, WA
How It Works

Our Four-Step Exterior Waterproofing Dispatch Process

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

What Kelso, WA Customers Say About Our Exterior Waterproofing Work

Top rated local Exterior Waterproofing specialists in Kelso, WA
★★★★★

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

— Kelso Homeowner

★★★★★

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

— Kelso Customer

★★★★★

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

— Kelso Homeowner

★★★★★

"Fast turnaround given how much digging was involved."

— Kelso 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?▼

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?▼

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

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

Reliable Exterior Waterproofing contractor in Kelso, WA by SGP Waterproofing
Affordable Exterior Waterproofing solutions in Kelso, WA
Trusted Exterior Waterproofing service in Kelso, WA - SGP Waterproofing

Zip codes we serve in Kelso, WA: 98626 98632

Kelso, WA'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 Kelso, WA

Kelso is a city in the southwestern part of the U.S. state of Washington and is the county seat of Cowlitz County. At the 2020 census, the population was 12,720. Kelso is part of the Longview, Washington Metropolitan statistical area, which has a population of 110,730. Kelso shares its long western border with Longview. It is near Mount St. Helens.

Zip Codes in Kelso, WA that we also serve: 98626 98632

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