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Fix It From the Outside In: Exterior Waterproofing in Ontario, NY

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

Licensed Exterior Waterproofing service in Ontario, NY - SGP Waterproofing
Why Choose Us

Why Ontario, NY Property Owners Choose SGP Waterproofing for Exterior Waterproofing

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

Exterior work involves excavation near the foundation, and every crew member is trained and insured for that specific scope.

2

Local Equipment Staging

Weather-dependent scheduling means we plan exterior jobs around Ontario, NY'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 Ontario, NY
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 Ontario, NY 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 Ontario, NY 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 Ontario, NY
How It Works

From Call to Resolution: How Exterior Waterproofing Works in Ontario, NY

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

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

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

Customer Reviews

What Ontario, NY Customers Say About Our Exterior Waterproofing Work

Top rated local Exterior Waterproofing specialists in Ontario, NY
★★★★★

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

— Ontario Homeowner

★★★★★

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

— Ontario Customer

★★★★★

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

— Ontario Homeowner

★★★★★

"Fast turnaround given how much digging was involved."

— Ontario 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?

Yes — grading correction and downspout extension are often standalone fixes that resolve a surprising number of Ontario, NY 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 Ontario and Surrounding Ontario, NY Communities

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

Reliable Exterior Waterproofing contractor in Ontario, NY by SGP Waterproofing
Affordable Exterior Waterproofing solutions in Ontario, NY
Trusted Exterior Waterproofing service in Ontario, NY - SGP Waterproofing

Zip codes we serve in Ontario, NY: 14519

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 Ontario, NY

Offering top quality Exterior Waterproofing services in Ontario, NY. Certified, licensed, and available 24/7.

Zip Codes in Ontario, NY that we also serve: 14519

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🟢 Techs On Duty in Ontario, NY Call +1-866-476-1348