● Open 24/7 for emergency calls

Exterior Waterproofing in Ontario, NY — Stop Water Before It Reaches the Wall

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

24/7
Emergency Dispatch
Licensed Exterior Waterproofing service in Ontario, NY - SGP Waterproofing
Why Choose Us

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

A lot of Ontario, NY 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 Ontario, NY 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

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 Ontario, NY
What We Do

Comprehensive Exterior Waterproofing Solutions in Ontario, NY

Every Ontario, NY 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 Ontario, NY 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

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

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

Excavation, membrane installation, and backfill for a typical residential wall section usually take a few days depending on access and weather.

Customer Reviews

Real Exterior Waterproofing Reviews From Ontario, NY Property Owners

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

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

— Ontario Homeowner

★★★★★

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

— Ontario Customer

★★★★★

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

— Ontario Homeowner

★★★★★

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

— Ontario Customer

FAQ

What Ontario, NY Customers Ask Us Most 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?▼

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?▼

We'll recommend starting there if the inspection suggests surface water is the primary cause.

How long does exterior waterproofing take?▼

Larger projects or difficult access points can extend the timeline, which we'll outline in the written quote.

Service Coverage

Proudly Providing Exterior Waterproofing Throughout Ontario and Ontario, NY

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

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

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 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

Cities Close To Ontario, NY That We Also Serve


Exterior Waterproofing Express #1
★ 4.9 (120+ Reviews)
Dispatch Center, NY
Call +1-866-476-1348
Exterior Waterproofing Express #2
★ 4.9 (120+ Reviews)
Dispatch Center, NY
Call +1-866-476-1348
Exterior Waterproofing Express #3
★ 4.9 (120+ Reviews)
Dispatch Center, NY
Call +1-866-476-1348
Exterior Waterproofing Express #4
★ 4.9 (120+ Reviews)
Dispatch Center, NY
Call +1-866-476-1348
Exterior Waterproofing Express #5
★ 4.9 (120+ Reviews)
Dispatch Center, NY
Call +1-866-476-1348
Exterior Waterproofing Express #6
★ 4.9 (120+ Reviews)
Dispatch Center, NY
Call +1-866-476-1348
Emergency Exterior Waterproofing available now in Ontario, NY 📞 Call +1-866-476-1348
🟢 Techs On Duty in Ontario, NY Call +1-866-476-1348