Commercial Waterproofing in Toronto & Southern Ontario

Protect Your Commercial Building With Aquamaster

Water has a way of finding the weakest points in your building. Whether it slips through foundation cracks, pools around elevator shafts, or seeps through underground garage walls, the damage adds up fast.

Aquamaster handle commercial waterproofing for everything from mid-rise offices and schools to high-traffic retail plazas and deep foundation parking structures. With 24/7 availability and a 25-year warranty, you can trust that our work lasts and your property stays protected.

Award-Winning Waterproofing Contractor

Commercial Waterproofing and Caulking Services in Toronto

At Aquamaster Plumbing, we provide a full range of commercial waterproofing services designed to meet the needs of buildings both new and existing. Our team has experience with a wide variety of commercial properties, including shopping centers, apartment buildings, warehouses, schools, hospitals, and other institutional spaces.

ICF waterproofing: We often work with partners like custom home builders to waterproof properties that are still under construction with insulated concrete foam (ICF).
Blindside waterproofing: Widely known as pre-applied basement waterproofing, blindside waterproofing is an excellent choice for commercial properties in the initial stages of construction with scenarios like zero-lot-line foundations that complicate their construction.
Crack repair: Our experts can perform foundation crack repairs for damaged sections of walls and floors. We can help evaluate the extent of foundation damage and recommend an appropriate solution – from sealing foundation cracks with epoxy injection to solutions like crack stitching.
Other commercial waterproofing services: From drainage system maintenance and catch basin cleaning to sump pump installation and commercial plumbing, Aquamaster provides our clients with a full suite of services.

You can always expect top-quality service from Aquamaster’s commercial waterproofing contractors. Let’s discuss the next project for your commercial building!

5-Star Reviews from 100+ Happy Customers

Aquamaster has earned over 100 x 5-star customer reviews from happy customers! Take a look at what our past and present clients have to say to learn more about Aquamaster experience.

Aquamaster Basement Waterproofing Toronto

4.9

Based on 327 reviews

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We couldn’t be happier with Aquamaster Waterproofing. David and Mike handled the entire project from inspection to final cleanup. They repaired our cracked foundation, sealed the basement walls, and added proper drainage. The work was neat, efficient, and done ahead of schedule. The peace of mind they’ve given us is priceless.

Liza 14

02:45 10 Nov 25

We had a major basement flooding issue, and no one could figure it out—until we called Aquamaster Waterproofing. Sarah and David were thorough during the inspection and found that our sump pump had failed. They replaced it, installed a backup pump, and added better drainage around the foundation. The system works flawlessly now, and our basement has been dry ever since. Five-star service from a truly reliable company.

Mercury

02:16 10 Nov 25

We recently moved into an older home and discovered water coming through the floor in the basement. Aquamaster’s team, led by Alex and David, came right away for an inspection. They installed a sump pump, sealed all visible cracks, and made sure our drainage system was working correctly. The workers were polite, neat, and extremely knowledgeable. It’s rare to find a company that combines great service with such high-quality workmanship. I’m beyond satisfied with the results.

Bogdan Perekatov

04:37 08 Nov 25

David and John from Aquamaster did an excellent job fixing our wet basement. They explained the problem clearly and provided a permanent solution. The quality of their work is unbeatable.

Тарас Назарко

04:50 06 Nov 25

Maria at the front office was so kind and helpful, and Daniel’s crew did flawless work sealing our foundation cracks. We can finally enjoy our basement again. Five-star company through and through.

Usman Mohammad

04:56 04 Nov 25

The crew from Aquamaster did an incredible job. They were very detail-oriented and made sure everything was done properly. I was impressed by their professionalism and care. My basement is completely dry now.

Ильченко Валерия

01:48 29 Sep 25

Aquamaster completely fixed my leaky basement. The crew—Mike and Peter—were fantastic. They worked quickly, cleaned up after themselves, and made sure everything was perfect. I highly recommend this company.

A Zhoravovych

03:54 28 Sep 25

Great service from Aquamaster! They installed a sump pump in my basement and waterproofed the walls. The workers—Andrew and Tom—were very friendly and helpful. Everything is working perfectly, and I’m so glad I called them.

Володимир

05:39 27 Sep 25

Aquamaster went above and beyond to repair my basement foundation. The crew was on time every day, respectful, and very skilled at what they do. They explained the whole waterproofing process so I could understand it clearly. Now my basement is bone dry and I couldn’t be happier.

Женя Топ

03:42 23 Sep 25

Waterproof Basement exceeded my expectations. Mike and Chris did a full basement waterproofing job, and they were incredibly detail-oriented. They sealed every crack, installed a drainage system, and explained the warranty thoroughly. My basement is now dry and comfortable, and I couldn’t be happier with the service.

kofein

03:56 30 Aug 25

We were very pleased with the work done by Aquamaster. The team was professional, worked hard and stayed late to finish the job faster than expected. I would highly recommend Aquamaster. Thank you.

Alida

23:24 19 Aug 25

I highly recommend Aquamaster. Mark and Roman repaired our foundation wall, added waterproof coating, and extended our downspouts. They did more than promised and for the same price. That kind of integrity deserves recognition.

Valeriia Solomko

00:36 18 Aug 25

Our neighbor recommended Aquamaster after they fixed his leaky wall. Now we’re recommending them too! 5 stars.

Катя Данькова

04:15 06 Aug 25

Fast, friendly, and flawless. Aquamaster did an outstanding job and made the whole process easy for us. Would give more than 5 stars if I could!

Коротницька Марія

05:41 31 Jul 25

I usually don’t leave reviews, but Aquamaster earned this one. Everything was smooth, professional, and respectful. You can tell they really care about doing quality work.

Valymir Zhezherun

04:59 31 Jul 25

We had a few concerns before starting the project, but Aquamaster quickly put us at ease. Every question was answered, and every promise was kept. The results speak for themselves—flawless job.

sofia lukina

02:28 30 Jul 25

Huge thank-you to the Aquamaster team! The project was finished faster than expected, and the quality of the work was outstanding. Everyone was polite, helpful, and focused. Would absolutely hire again.

Ильяс

02:08 30 Jul 25

If you’re looking for a company that takes pride in its work, look no further. Aquamaster delivered everything they promised and more. Their whole team was courteous, efficient, and clearly experienced. 5 stars!

Дима

05:38 29 Jul 25

Our old sump pump wasn’t cutting it anymore, and we were nervous about flooding. Aquamaster recommended a dual pump system with battery backup. Manny explained all the benefits and had it installed within a few hours. Now we’re ready for anything.

Kedriss

01:18 28 Jul 25

Very happy with the service. They found the leak quickly, explained the issue, and got it fixed fast. No more water in the basement. Would definitely hire them again.

Магдалина Дубик

01:26 10 Jul 25

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Types of Commercial Waterproofing Systems We Install in Toronto

We offer a variety of commercial waterproofing systems depending on the application and property type.

These include:

Exterior waterproofing with rubberized membranes
Interior drainage systems with sump pumps
Crack injection with epoxy or polyurethane
Blind-side or ICF waterproofing
Crystalline waterproofing for concrete structures
Liquid-applied membrane systems for interior or vertical walls

Our most trusted materials include Aqua-Bloc 770-06 liquid membrane and 4×100 corrugated drain pipe with filter wrap. We do not use anything on your site that we would not use on our own.

Materials We Use

We use only proven commercial waterproofing products and drainage materials on every job.

Some of our most trusted tools and materials include:

Aqua-Bloc 770-06: a high-performance liquid membrane ideal for foundation walls
4×100 Corrugated Drain Pipe with Filter: for long-lasting underground drainage
Delta MS and DMX Air Gap Membranes
Bakor Yellow Jacket Mesh and hydraulic cement

We always choose the right waterproofing products based on site conditions and client needs.

Waterproofing for New Builds and Blind-Side Jobs

New construction brings its own set of waterproofing demands. For ICF foundations, deep urban excavations, or sites with minimal access, we use blind-side waterproofing systems that get placed before backfill. We coordinate directly with your engineers, architects, and general contractors to make sure everything fits into your build schedule.

Specialty Work and Structural Support

Some of the most flood-prone areas in a building are below grade and out of sight. This includes elevator pits, tunnels, and mechanical rooms. We waterproof these spots and, if needed, we also perform floor lowering and underpinning to increase ceiling height while keeping the foundation strong.

Every job starts with a free site visit. We inspect the property, highlight high-risk zones, and lay out a clear step-by-step plan. Permit applications, safety planning, and municipal code compliance are all handled by us so you can focus on keeping your building running.

How We Handle Commercial Waterproofing Jobs

Waterproofing at scale requires more than sealing a few joints. It is about doing the work without halting your operations or compromising safety.

Minimizing Disruption – We plan our schedules around your hours. We know businesses cannot afford shutdowns, so we build work plans that keep you open while we handle the job.
Permit Handling- From lane closures to curb cut approvals, we sort through city paperwork and get permits processed before crews arrive on-site.
Safety Measures – We put up protective hoarding, mark out work areas clearly, and maintain job sites that stay clean and safe for staff, tenants, and the public.
Vacuum Excavation – Digging around underground utilities requires precision.
We use vacuum – trucks to expose lines safely and move faster without risking costly damage.
Surface Restoration – Once the waterproofing is done, we repair every surface to match its original state. Whether it is interlock pavers or poured concrete, we leave it clean and professional.

Why Choose Aquamaster for Commercial Waterproofing in Toronto?

With over 15+ years of industry experience, Aquamaster has become one of the most trusted commercial waterproofing companies in the Toronto area. Our licensed team of commercial waterproofers delivers reliable, clean, and efficient work on every project.

25-Year Warranty Coverage

We offer a 25-year transferable warranty on labor, materials, and workmanship for all commercial waterproofing projects.

Emergency Services

Our crew is on call 24/7 to respond quickly to emergency waterproofing or drainage issues anywhere in the GTA.

Licensed and Insured

All work is performed by licensed, insured professionals trained in waterproofing, plumbing, underpinning, and structural repairs.

Excellent Price

First-time customers receive 10% off their initial service—quality waterproofing at competitive, transparent pricing.

SIndustry Expertise

In business since 2009, we bring over a decade of hands-on experience to every commercial waterproofing job.

Proudly Serving South Ontario

We know the soil conditions and climate challenges of the GTA and tailor waterproofing solutions to local needs.

Best Materials

We use high-performance membranes, drainage pipe, and waterproofing products built to withstand Ontario’s weather and groundwater conditions.

Peace of Mind

From permit handling to final cleanup, we plan every step carefully so you can focus on your business.

Commercial Waterproofing Process

Site Inspection and Risk Assessment

We walk the property, identify moisture threats, and review your foundation layout to recommend a waterproofing system that actually fits your space.

Quotation and Permit Planning

You get a clear proposal with cost, timing, and product specs. We handle all municipal permits in advance so nothing delays the work.

On-Site Execution and Cleanup

Our team arrives on time, completes the job safely, and does a full cleanup once the system is in place. You also receive your warranty documents and a walk-through of the work done.

Frequently Asked Questions

What is the best waterproofing method for a commercial foundation in Toronto?

It depends on the site. Exterior membrane systems are best for new construction. For existing buildings, interior drainage and sump pumps are effective.

How long does commercial waterproofing last?

When installed properly using high-quality products, commercial waterproofing can last several decades. Aquamaster includes a 25-year transferable warranty on all waterproof services.

Can you waterproof an occupied commercial building?

Yes. We specialize in working around ongoing business operations with minimal disruption. Interior waterproofing is a popular choice for occupied spaces.

What are common signs that a commercial building needs waterproofing?

Signs include basement leaks, water stains, musty odors, mold growth, and foundation cracks.

Do you handle permits and inspections?

Yes. Our commercial waterproofing contractors take care of municipal permits and ensure your project meets all building codes and safety requirements.

What are your Service Areas?

Proudly Serving Toronto and Beyond

Get Started with 10% Off Today!

Trust Aquamaster for expert commercial waterproofing services in Toronto—our 25-year warranty is a testament to the quality and reliability of our work. Contact us today and receive 10% off your service!