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Fix It From the Outside In: Exterior Waterproofing in Lewisville, WA

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

Licensed Exterior Waterproofing service in Lewisville, WA - SGP Waterproofing
Why Choose Us

What Sets Our Exterior Waterproofing Team Apart in Lewisville, WA

A lot of Lewisville, WA exterior waterproofing failures trace back to a footing drain that was installed without proper slope, which means it never actually moved water the way it was supposed to. We verify slope during installation, not just at design.

1

Licensed Excavation & Waterproofing Crews

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

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

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 Lewisville, WA
What We Do

The Full Scope of Our Lewisville, WA 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 Lewisville, WA 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 Lewisville, WA
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

We flag any utility lines or landscaping features that need special handling during excavation.

03

Written Excavation Quote

We explain what's included in landscaping restoration so there's no confusion after backfill.

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 Lewisville, WA Property Owners

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

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

— Lewisville Homeowner

★★★★★

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

— Lewisville Customer

★★★★★

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

— Lewisville Homeowner

★★★★★

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

— Lewisville Customer

FAQ

Frequently Asked Questions 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?

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?

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 Lewisville, 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

Exterior Waterproofing Coverage Across Lewisville and Surrounding Lewisville, WA Communities

We handle exterior excavation and membrane work throughout Lewisville and the surrounding Lewisville, WA service area, including the zip codes listed below.

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

Zip codes we serve in Lewisville, WA: 98604

Don't Wait On Exterior Waterproofing — Call Now

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

Call +1-866-476-1348

Our Services in Lewisville, WA

Lewisville is a census-designated place (CDP) in Clark County, Washington, United States. The population was 1,722 at the 2010 census.

Zip Codes in Lewisville, WA that we also serve: 98604

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