Over 40 Years Of Experience And 10,000+ Hamilton Issued Waterproofing Warranties To Date

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Over 40 Years Of Experience And 10,000+ Hamilton Issued Waterproofing Warranties To Date



Our Awards


Are You Coming Across at Least One of These Problems in Your Home?

For 3 to 5 years, exterior waterproofing materials wear off, caused by the ebb and flow of groundwater. Depending on the soil type, location, and landscape slope (grade), a basement can have longer-lasting exterior waterproofing. So you need a basement crack repair, basement underpinning check, and basement waterproofing as foundation repair services.

GJ MacRae Foundation Repair:
The Go-To Basement Waterproofing Hamilton

GJ MacRae Foundation Repair is a renowned basement waterproofing company that offers a range of services, including foundation repair and underpinning. We provide complete basement waterproofing and have issued over 10,000 warranties to date, making us the most reliable waterproofing company in Hamilton, ON. As a family-owned business for over four decades, we take pride in our work and guarantee top-quality results. Beginning in 1975, no other companies in Hamilton have provided waterproofing and underpinning services for as long as we have.

GJ MacRae is one of the few basement foundation crack repair companies in Hamilton that cover all phases of waterproofing, underpinning, weeping tile system, structure, and drainage-related solutions. We don’t just issue a document but genuinely provide the most reliable and time-tested waterproofing warranty available today in Hamilton.

Trust Our Expertise for Basement Waterproofing in Hamilton
Your Basement Problems Solved

At the moment, we have been proudly serving The GTA:  Hamilton, Toronto, Etobicoke, Mississauga, Oakville, Burlington, Milton, Georgetown, and surrounding areas since 1975. We specialize in basement waterproofing in Hamilton for below-grade concrete blocks, poured concrete, field stone, and rubble stone foundation walls. 

With 10,000+ satisfied customers to date in Hamilton and over 40 years of experience, we are the leaders in all phases of foundation repair, from crack repair to weeping tile systems, some foxes structural foundation repair and underpinning, all coupled with a full line of drainage solutions, etc.

GJ MacRae Foundation Repair is the home of the true, time-tested 15-year transferable warranty. We guarantee to keep your structure here in Hamilton high and dry for years to come. We also issue a true guarantee from Home and Garden Television (HGTV) featured contractor and The Homestars: Best of Award for Customer Service.



foundation wall ontario

Serving the GTA

Servicing Toronto, Etobicoke, Mississauga, Oakville, Burlington, Milton, Hamilton and Georgetown.

best service award for water proofing in ontario

Outstanding Service

Home of the original transferable warranty. We are licensed specialists in basement waterproofing and underpinning.

family owned water proofing company

Family Owned

Family owned and operated since 1975. Robust liability insurance, WHMIS trained, fully licensed, insured and bonded.

Why GJ Macrae Foundation Repair is the Leading Basement Waterproofing Contractor In Hamilton

Basement Waterproofing Hamilton Warranty Guarantee

GJ MacRae Foundation Repair is the home of the true, time-tested 15-year transferable warranty. We will make sure your basement foundation remains leak free for years to come. If there are any problems with our foundation repair service, give us a call and we will make it right!

Meticulous Hand Excavation Rather Than Machine

Residential hand excavation is our specialty. We provide a low-impact excavation method and return your grounds to their original state. Hand excavation affords less overall damage to the property and its surroundings. At the same time, heavy machinery is challenging to operate in tight-access residential situations. Our hand excavation waterproofing process also protects the aesthetics of your home in a way that machine excavation cannot do. For example, interlocking stones, garden beds, and shrubbery can be reinstalled with minimal effect on the aesthetics of the property. Overall, we prefer hand excavation over machinery wherever possible.

Hamilton Waterproofing Reviews

Our GJ MacRae basement waterproofing Hamilton service reviews and testimonials are available on every primary construction industry reviewing sites like HomeStars and HGTV. You can read reviews from people who have used our basement waterproofing in Hamilton before implementing our waterproofing service. We always encourage our customers to leave their repair experiences. That’s why we improve our service daily and have had a good reputation for over 40 years.

Over 10,000 Waterproofing Satisfied Customers From Hamilton

With over 10,000+ warranties issued to date, no other company can match our degree of waterproofing dependability. For over 40 years, we have been servicing Hamilton, Toronto, Etobicoke, Mississauga, Oakville, Burlington, Milton, and Georgetown, which cover all phases of waterproofing, underpinning, structure, and drainage-related solutions. If you are in Hamilton, you can find a similar waterproofing job close to your home on our waterproofing projects page.

Written Waterproofing Estimate For The Most Reasonable Price In Hamilton Area

Before conducting any basement waterproofing services from GJ Macrae, we will have a conversation with our customers and exchange all information about the problem they are facing. A survey may be needed, and we will provide you with a written estimate. GJ Macrae Foundation Repair aims to give a competitive basement waterproofing cost for all customers’ satisfaction in Hamilton

Variety Of Solutions/Services For Your Basement Waterproofing

With our licensed specialist, we offer a range of different waterproofing solutions designed for your unique leaky basement application. Whether it is exterior or interior waterproofing, foundation crack repair, underpinning, etc. We have plenty of waterproofing services to offer.

Industry-leading GJ MacRae Waterproofing Services

GJ MacRae foundation repair provides customers with top-notch services in foundation repair in Hamilton. Various Waterproofing Services are available such as Basement Waterproofing, Int/Ext Weeping Tile Systems, Sump Pumps Installation, Crack repair, etc. With over 40 years of experience and 10000+ satisfied customers from Hamilton, our licensed specialists are confident that we can guarantee the best results with the most reasonable price and warranty for each type of customer request.


Basement Waterproofing Hamilton

We specialize in basement waterproofing services for below-grade concrete blocks, poured concrete, field stone, and rubble stone foundation walls. With over 40 years of service in the GTA and backed by the most reliable warranty in the business, see what the GJ MacRae difference is all about.


Foundation Crack Repair Hamilton

Is there a crack in your poured, block, or rubble stone foundation wall, and is this crack allowing water to leak into your basement? Why do interior crack repair methods simply not work? Trust the experts and see why GJ MacRae Foundation Repair carries the business's most reliable crack repair warranty.


Weeping Tile Systems Hamilton

A century-old technology, reborn! Our services also include interior and exterior weeping tile systems coupled with deep insights and experience relating to drainage. Ask us about the difference between interior and exterior drainage methods and enjoy the benefit of our expertise!


Sump Pumps Hamilton

Sump pumps and sump basins are integral to all below-grade drainage strategies due to their simplicity, reliability, low cost, and proven effectiveness. Ensure your sump pump, sump basin, and battery backup system are well maintained and ready for the next significant rain or thaw.


Structural Wall Repairs Hamilton

Is your home's structure moving, and is this movement accelerating as the years pass? The sooner the integrity of your foundation is restored, the better. We have a full line of time-tested, certified structural foundation repair solutions tailored to your scope and budget.

crumbling foundations

Crumbling Foundations Hamilton

Are your foundation walls spalling, eroding, or fragmenting? Is this damage accelerating through the years? Stopping moisture penetration through your above-grade concrete structure is imperative. We offer brush parging, s-type, adhesive, mesh, fiber, and thermal-slurry solutions for a lasting barrier.


Basement Underpinning Hamilton

GJ MacRae are pioneers of the overflow underpinning method in the Greater Toronto Area. Our underpinning process allows for safe, reliable vertical increases in basement ceiling height that can turn crawl spaces into full living quarters, all for less than a standard second-story addition.


Structural Carbon Fiber Hamilton

When your foundation walls begin to show signs of cracking or bowing, it generally indicates severe exterior lateral pressure from tree roots, hydrostatics, or poorly draining soil. Click here to learn more about our full carbon fiber foundation reinforcement application line.

Window Wells

Window Wells Hamilton

Basement windows are a great source of natural light. They can also act as a designated fire escape, but what happens when window wells begin to deteriorate, clog and leak? Our hand-excavated exterior window well repair solutions are permanent and allow for guaranteed unimpeded drainage all year long.

Here Is Our Basement Waterproofing Process​

We Want To Mention That The Only Way To Fix A Foundation Crack Properly Is From The Exterior.

First, after establishing where the crack in the foundation is located, we set up tarps and begin excavating down to the footings by hand. It’s important to excavate beyond the cracking and all the way to the bottom of the foundation wall. Working our way across the below-grade exposed wall, we look for any additional surface cracks.

Next, the exposed wall is cleaned with a wire brush to prepare it for a coat of primer. The crack in the wall is then chiseled out and cleaned with a wire brush allowing for the quick setting of expansive hydraulic cement, which is inserted into the crack with a trowel.

Once the hydraulic cement is set, we apply a quick-drying primer to the foundation wall. This specialized primer allows for an aggressive adhesion to the wall which sets us up for the next step in our waterproofing process.

Then, hydroshield is applied to the entire wall using a trowel. Once applied, this rubberized membrane is impermeable to air, moisture, and liquid water. A layer of fiberglass mesh is applied on top of the hydroshield allowing flexibility within the membrane while maintaining its integrity. Another layer of hydroshield is then applied overtop, creating a double coat. This allows us to ensure no water will penetrate the repaired areas.

Subsequently, while our patch is still tacky, a layer of thick plastic is now applied to the surface of the membrane. At this point, a product called Platon drainage board is now installed on top of our quadruple-layered membrane. It acts as an additional layer preventing water from getting to the foundation wall while simultaneously protecting the membrane behind it during backfilling and power tamping.

Last but not least, before backfilling, the existing weeping tile is replaced within the repaired areas. This fresh weeping tile is surrounded by a filter sock that cleans fine particles from groundwater, enabling the weeping tile to continue moving water away from your foundation.

Another step in protecting and preventing your overall foundation drainage system from becoming overwhelmed is installing clear gravel around (and above) the new weeping tile system to ensure consistent, rapid drainage.

As the backfilling process begins, the native soil is power tamped every 6″-12″ (inches). Power tamping ensures that the drainage is consistent and that the rubberized membrane and waterproofing system are locked into place, allowing for the restoration of the original grade within the repaired areas (with little to no settlement after completion).

After a complete backfill and power tamp, a termination strip is attached to the top of the Platon drainage board. Rookies will put the termination strip on before they backfill. This can cause a separation between the drainage board and the termination strip, causing unsightly issues later on. After completion, everything within the repaired area is washed and swept.


Joseph PastorJoseph Pastor
16:15 24 Jan 23
Excellent service from beginning to end. We would highly recommend this company. Dean assessed the problem (water leaking into our furnace room as a result of a window well that another company had incorrectly installed previously) and provided a thorough estimate detailing every aspect of the project. He then scheduled the job to be done before the big winter storm that had been forecast. The crew arrived exactly on time and completed the job, to the very best professional standard, in less than a day. We are so glad we chose G.J. MacRae. Thank you very much.
Lisa NeedhamLisa Needham
19:43 11 Nov 22
Amazing Service! GJ MacRae Foundation repair provided timely and superior quality service. Everything went exactly as planned from our initial consult and quote. Workers were on time, the quote was accurate and the work was high quality. We have a perfectionist contractor and he was incredibly impressed with Gavin and the team and he noted that the work was exceptional Inside and out on the project. The site was was clean and looked perfect when completed. Would highly recommend this service to our friends and family and others looking for this type of work! We can’t say enough good things and are so thankful!
16:24 11 Nov 22
Our second time utilising GJ MacRae Foundation; separate issues. Their professionalism and respect for their clients is highly commendable. Office team, sales and on-site crew all compliment each other.Highly recommend GJ MacRae Foundation company!
Kate PapadopoulosKate Papadopoulos
23:28 10 Apr 22
My fiancé and I can not say enough amazing things about GJ Mcrae. As first time home owners with water damage in our basement, GJ mcrae took care of everything so quickly and we’re extremely professional, reducing any worries we had. Would recommend this company over and over again. Dean was so easy with work with and continued to support us throughout the process. Thanks so much for the amazing job.
Adam DAdam D
19:38 11 Oct 20
We had GJ Macrae underpin our 1890s house in Leslieville over the summer. The team showed up on time every day, the project moved so smoothly. I wish I had another basement for them to underpin.Highly recommend GJ Macrae for any basement or underpinning work. The final result looks fantastic, we have a beautiful basement, with nice tall ceilings!The whole team was a pleasure to work with! 5 stars!

Schedule A Visit With Us Now!

After you fill out the form below, we will contact you as soon as possible for A FREE ESTIMATE. If you still have any questions, feel free to contact us anytime. We are 24/7 active!

Frequently Asked Questions

Waterproofing is a method that prevents water from penetrating your house. Waterproofing is very important as it helps keep your house dry.
There is no one size fits all approach. The solution to waterproof your basement needs to be designed specifically to address your issues and accomplish your goals. But we guarantee the most reasonable price to fit all customers’ satisfaction.
Yes. Again it is important to work with a professional so that you get a solution with a long-term warranty and a company that gives you the peace of mind that they will do the work right and stand behind it.
No. These are two separate issues and need to be addressed with different solutions.
Efflorescence- it is a mineral deposit left behind after water or moisture was present
GJ Macrae provides solutions with long-term warranties. Considerations include the type of waterproofing system you install and the type of sump system you install. There are different options that offer different levels of protection.
Some of the most common sources of basement water damage include leaky basement walls, basement drains, foundation wall cracks, leaky egress windows, and faulty or damaged basement sump pumps.
Recurring leaks in your basement walls, floors, or ceiling are a hassle to clean up and create a damp environment that serves as a breeding ground for mold and wood rot. Mold growth can seriously damage your basement walls, your possessions, and even your indoor air quality
Hydraulic Cement is a product used to stop water and leaks in concrete and masonry structures. It is a type of cement, similar to mortar, that sets extremely fast and hardens after it has been mixed with water. It is used widely in the construction industry sealing structures below grade and in situations where structures can be affected or submerged in water.
At GJ Macrae, we pride ourselves on providing permanent solutions and stand behind our work with industry-leading fully transferable warranties and guarantees. Most of our foundation repair, basement waterproofing, and crawl space repair work is backed by a 15-year warranty.

Service Areas in Hamilton

At the moment, we are serving our waterproofing services/projects throughout the Hamilton region including Ancaster, Stoney Creek, Dundas, Albion Falls, and more. So don’t hesitate, give us a call and see how it goes!