Basement Waterproofing Oshawa

Aquamaster is proud to be a premier Basement Waterproofing Contractor in Oshawa, delivering trusted waterproofing, foundation repair, and drainage services since 2009. We’re locally based and understand Oshawa basement waterproofing — from freeze/thaw cycles to shifting clay soils. Our certified technicians manage every step—from discovery to durable resolution. We strive for clear timelines, transparent pricing, and respectful service, whether it’s a minor leak repair or extensive underpinning.

Award-Winning Waterproofing Contractor in Oshawa

With our 25‑year transferable warranty and strong record throughout Durham Region, we’re committed to keeping your basement dry, reliable, and weather-ready in all seasons.

Trusted Basement Waterproofing in Oshawa

Aquamaster has been protecting Oshawa homes with expert basement waterproofing and plumbing for more than a decade. We use durable materials like Delta MS and Aqua Bloc, and all work is done by our licensed in-house team—no subcontractors. With 24/7 emergency support and a 25-year warranty, we’re built to handle wet basements with long-term solutions.

Licensed & Insured Professionals – Our waterproofing crew in Oshawa is fully licensed and insured. We handle every detail and take full responsibility for the results.

25-Year Warranty – Our 25-year transferable warranty is included with every job. We believe in long-lasting work and stand behind it.

Trusted Oshawa Basement Waterproofing Experts – With over 15 years of experience, we’ve solved every type of basement leak in Oshawa’s varied soil and climate conditions.

Advanced Basement Waterproofing Materials – We rely on strong waterproofing systems like polyurea membranes and premium-grade sealants made for Oshawa’s wet basements and foundation shifts.

Trust Aquamaster for expert basement waterproofing in Oshawa. Built on local experience, solid materials, and 24/7 support.

Best Basement Waterproofing Company in Oshawa!

Includes a 25-year transferable warranty, premium-grade waterproofing, and a FREE drain camera inspection.

Basement Waterproofing Services Available in Oshawa!

Basement waterproofing in Oshawa isn’t just about fixing leaks—it’s about making sure your home is ready for everything from spring rains to deep winter freezes. We offer a full range of waterproofing services designed to protect your foundation, prevent long-term damage, and keep your basement dry year-round.

Exterior Waterproofing Oshawa

Protect your Oshawa home by stopping water outside the foundation. We excavate, repair cracks, apply waterproof coatings, and install full drainage systems with weeping tile and boards. Soil is backfilled to restore surface strength.

Cost of Exterior Waterproofing in Oshawa – starting from $100 per linear ft

Interior Waterproofing Oshawa

Designed to manage interior basement moisture. We seal walls, install interior drainage (weeping tile), and add a sump pump to direct water safely away. Ideal for finished basements or when outside access is limited.

Cost of Interior Waterproofing in Oshawa – starting from $80 per linear ft

Weeping Tile Installation Oshawa

Controls groundwater and reduces pressure on basement walls. We dig along the foundation, install gravel-lined perforated pipes, and redirect water effectively. Keeps basements dry throughout the year.

Cost of Weeping Tile Installation in Oshawa – starting from $30 per linear ft

Sump Pump Installation Oshawa

We supply and service sump pumps to protect Oshawa basements. Units collect and pump water away from the foundation. Options include battery backup systems and upgraded pits.

Cost of Sump Pump Installation in Oshawa – starting from $700

Window Well Installation Oshawa

Prevents water from entering basement windows while boosting light and airflow. We install drainage around wells, add solid barriers, and reduce soil-related moisture intrusion.

Cost of Window Well Installation in Oshawa – starting from $1,800 per window

Backwater Valve Installation Oshawa

Prevents sewage backup during heavy rains. Installed in sewer lines with city-approved valves—and we assist with rebate applications when eligible.

Cost of Backwater Valve Installation in Oshawa – starting from $2,200 per unit

5-Star Reviews from 100+ Happy Oshawa Customers

Aquamaster has earned over 100 x 5-star customer reviews from happy Oshawa
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 261 reviews

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I can’t thank Aquamaster enough for their outstanding service. They fixed multiple cracks in my foundation, waterproofed the interior walls, and installed systems to keep groundwater away from the house. The workers were skilled, considerate, and left the entire area neat and tidy. Since the repairs, the basement is dry, safe, and ready to use again — no more worries about mold or structural damage. Superb workmanship and customer care.

zlata

04:31 16 Dec 25

Mike handled our interior basement waterproofing and was incredibly detailed. He showed us the problem areas, installed the drainage system perfectly, and made sure everything looked clean and professional. Zero water issues since. Excellent service!

Shafeeq Shafeeq

20:08 15 Dec 25

Mike and Peter did the exterior basement waterproofing on our home. Not only was the workmanship excellent, but the cleanup was spotless. You can tell they really care about their work. Highly recommend this company!

Omar Baqer

19:58 15 Dec 25

Thomas and Leo were incredibly efficient. They worked nonstop until the job was done and kept us updated the whole time. The basement has stayed completely dry since their visit.

Tokyo Ghost

01:58 19 Nov 25

Maria and Alex made everything so easy. Maria was very responsive and patient with our questions, and Alex’s team handled the work efficiently. They waterproofed the basement and fixed a leaking window well. Everything was done perfectly and on schedule. It’s such a relief knowing our basement is protected.

кіра

05:41 16 Nov 25

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

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Foundation Repair Services in Oshawa

Our foundation repair services in Oshawa restore structural strength and enhance waterproofing. From underpinning to crack repairs, we stabilize your foundation and prevent future water damage.

Basement Underpinning Oshawa

We enhance basement depth and foundation strength. Ideal for older homes—adds headroom and structural integrity.

Cost of Basement Underpinning in Oshawa – starting from $80 per sq ft

Bench Footing Oshawa

Provides internal foundation support without exterior excavation. We pour concrete ledges to boost wall stability—helpful in Oshawa’s clay-rich soils.

Cost of Bench Footing in Oshawa – starting from $100 per linear ft

Basement Wall Crack Repair Oshawa

We repair cracks using epoxy or polyurethane injection. Carbon fiber reinforcement added for deeper structural needs. Prevents water intrusion and restores wall strength.

Cost of Wall Crack Repair in Oshawa – from $800 interior / from $1,800 exterior

Cost of Waterproofing in Oshawa

Oshawa basement waterproofing projects generally range from $1,000 to $25,000+, depending on layout and required services. Interior waterproofing runs $80–$180 per linear ft; exterior $100–$350. Crack repairs begin at $80; full foundation work varies on scope. Costs consider basement size, damage type, soil conditions, and access. Exterior methods cost more initially but offer lasting protection.

We provide upfront quotes and clear guidance on the best options.

Our Waterproofing Process in Oshawa

Free Inspection & Custom Plan

We begin with on-site inspection—evaluating cracks, leaks, and drainage. Then deliver a detailed plan with scope, timeline, and cost.

Professional Installation

Our licensed crew installs the system—be it interior or exterior waterproofing, foundation repair, sump pumps, or drainage upgrades—using materials suited for Oshawa homes.

Final Walkthrough & Warranty

We tidy the worksite, restore landscaping, and review the job with you. Our 25‑year transferable warranty gives long-term confidence.

Why Oshawa Homeowners Choose Us

25‑Year Transferable Warranty

Covers labour and materials; transfers with the home.

24/7 Emergency Response

Ready to respond to basement water issues anytime.

Certified & Fully Insured

Licensed professionals following safety and building standards.

First-Time Customer Savings

10 % off for new clients in Oshawa, with clear pricing.

Serving Since 2009

Over 15 years of experience across Durham Region.

Local Team, Local Knowledge

We know Oshawa’s soil and weather conditions well.

Premium Waterproofing Materials

Trusted brands like Delta MS membranes and Aqua Bloc are used.

Complete Project Management

We handle permits, prep, installation, cleanup, and warranty.

Finished Basement Waterproofing Projects in Oshawa

Lifetime Warranty & Rebate

Every basement waterproofing job in Oshawa comes with our lifetime warranty on labour and materials—offering protection from day one. If you sell your home, the warranty is transferable to the new owners. We also help you access municipal or utility rebates for water management and efficiency work. Our team guides you through the submission process to maximize your eligible incentives.

Combining warranty and rebates helps lower the cost of basement waterproofing in Oshawa, ensuring reliable defense for years to come.

Frequently Asked Questions

Can waterproofing improve indoor air quality?

Yes—by eliminating dampness and halting mold, waterproofing Oshawa basements creates a healthier environment with better airflow and fewer allergens.

Will exterior waterproofing disturb my landscaping?

We protect your yard during installation. After membranes and drainage are in place, we restore the soil and sod to preserve your lawn’s appearance.

Are interior waterproofing systems long-lasting?

Absolutely. With a reliable sump pump and regular maintenance, interior systems provide durable protection for decades.

What’s the best waterproofing method in Oshawa?

It depends on your home’s structure and exposure. Exterior waterproofing offers the strongest defense, while weeping tile, sump pumps, and interior drainage offer effective backups.

Do all basements in Oshawa need waterproofing?

Not immediately, but due to local soil and weather, proactive waterproofing is advised to avoid costly future repairs.

What are the downsides of waterproofing in Oshawa?

Initial investment, installation disruption, and upkeep requirements. Proper professional work ensures long-term success.

How do you waterproof a finished basement in Oshawa?

We typically install interior drainage systems, sump pumps, and wall membranes that divert moisture while preserving your finishes.

What Postal Codes We Serve in Oshawa

Our mission is to deliver reliable waterproofing in Oshawa that shields your home from basement leaks, moisture, and foundation issues. We cover all Oshawa neighborhoods with expert systems and local knowledge. Licensed teams and premium materials, expertly applied.

We serve these Oshawa postal codes: L1H, L1G, L1J, L1K