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Kent, WA's Exterior Waterproofing Crew: Membrane, Drain Tile, and Grading

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

24/7
Emergency Dispatch
Licensed Exterior Waterproofing service in Kent, 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 Kent, 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 Kent, WA
What We Do

The Full Scope of Our Kent, 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

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 Kent, 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

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

24/7 Emergency Exterior Waterproofing experts in Kent, WA
How It Works

From Call to Resolution: How Exterior Waterproofing Works in Kent, WA

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

Hear From Kent, WA Customers We've Already Helped

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

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

— Kent Homeowner

★★★★★

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

— Kent Customer

★★★★★

"Window well kept flooding every storm. They excavated, added drainage, and resealed the window frame while they were at it."

— Kent Homeowner

★★★★★

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

— Kent 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?▼

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?▼

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 Kent, WA

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

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

Zip codes we serve in Kent, WA: 98031 98030 98032 98042 98035 98064 98089

Get Exterior Waterproofing Handled Before It Gets Worse

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

Call +1-866-476-1348

Our Services in Kent, WA

Kent is a city in King County, Washington, United States. It is part of the Seattle–Tacoma–Bellevue metropolitan area and had a population of 136,588 as of the 2020 census, making it the fourth-largest municipality in greater Seattle and the sixth-largest in Washington state. The city is connected to Seattle, Bellevue and Tacoma via State Route 167 and Interstate 5, Sounder commuter rail, and commuter buses.

Zip Codes in Kent, WA that we also serve: 98031 98030 98032 98042 98035 98064 98089

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