GJ MacRae Foundation Repair

The Original Wetbasements Experts – Since 1975

The Highest Rated Basement Waterproofing Services in Guelph

Providing Guelph with Premium Basement Waterproofing Services Since 1975.

Our Services Are Trusted By


Combatting Basement Water Woes in Guelph?

When the rainy season hits Guelph each year, many residents are frustrated by damp and leaky basements. This issue often stems from inadequate or non-existent basement waterproofing systems. Rainwater that saturates the soil around your basement can seep through cracks and openings, infiltrating your basement walls. This unwelcome water intrusion leads to foundation wall damage, fostering the growth of mold and mildew, which can pose serious health risks. The absence of a robust defense mechanism subjects your foundation walls to hydrostatic pressure, exacerbating existing cracks and water entry vulnerabilities, and this pressure can arise from stagnant water persistently pushing against your foundation.

This cascade of events transforms your basement into a perpetually damp, musty-smelling area potentially plagued by mold. Plus, the structural integrity of your foundation wall can also become compromised, leaving your structure prone to further deterioration. Consequently, your basement becomes underutilized and ineffective. Yet, your basement holds the potential for so much more! Enter GJ MacRae Foundation Repair, your trusted specialist for basement waterproofing in Guelph, and committed to delivering you a dry, watertight foundation wall and basement!

leaking basement
GJ MacRae Foundation Repair

Your Guelph Basement Waterproofing Solution

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At the forefront of basement waterproofing in Guelph stands GJ MacRae, a second-generation, family-owned enterprise that has been serving the community since 1995. With nearly five decades of experience, GJ MacRae has undertaken over 10,000+ projects in Guelph, a testament to our unwavering dedication and consistent service excellence. A team of seasoned technicians, some of whom have been with the GJ MacRae family for decades, ensures our commitment to superior craftsmanship. We exclusively employ top-tier products to ensure durability and quality in every service. After receiving the GJ MacRae treatment, your basement walls become impermeable to water, offering you peace of mind with a completely waterproofed basement. Every service we offer comes with a transferable 15-year warranty, a testament to our pursuit of perfection and status as one of Guelph’s most reputable basement waterproofing companies.
The GJ MacRae Solution

Basement Waterproofing in Guelph

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

With 10,000+ satisfied customers to date in Guelph and nearly 50 years of experience, we are the leaders in all phases of foundation repair, from crack repair to weeping tile systems, structural foundation repair, and underpinning, all coupled with a full line of high-quality drainage solutions. GJ MacRae Foundation Repair is home to get the highest quality basement waterproofing in Toronto. We guarantee to keep your structure in Guelph high and dry for years to come, and that’s a promise!

Choose the Best: Why We're Guelph's Best Waterproofing Company


Decades of Experience​

We’re experts with almost five decades of experience providing quality basement waterproofing services.


Service Since 1975

Servicing Toronto, Etobicoke, Mississauga, Oakville, Burlington, Milton, Hamilton and Georgetown since 1975!


Outstanding Service

We offer the highest quality foundation repair, basement waterproofing, and underpinning services.


Completely Family Owned

Family owned and operated since 1975, robust liability insurance, fully licensed, insured, and bonded.


Wide Range of Services

From waterproofing to sump pump installations, we have the solution to your foundation needs.


Highest Quality Repairs

We take immense pride in delivering the highest quality workmanship available today in the GTA!


Why Choose GJ MacRae for Basement Waterproofing in Guelph?


10,000+ Successful Basement Waterproofing Projects Completed

With a record of over 10,000 successful basement waterproofing projects since our inception, GJ MacRae Foundation Repair is a testament to excellence and trustworthiness. Our unwavering commitment to quality service has earned the confidence of countless clients, setting us apart.


A Dry Basement, Guaranteed

Following our basement waterproofing process, your basement remains impervious to moisture. Customized waterproofing plans, high-quality workmanship, and proper grading ensure your basement stays dry for years.


Half A Century Of Expertise

With over 50 years of experience in basement waterproofing, GJ MacRae boasts seasoned professionals who have executed numerous waterproofing projects. The synergy of their expertise and premium products culminates in a dry, resilient finished product. 


Precision Hand Excavation Method

At GJ MacRae, we prioritize the precision of hand excavation over machinery, minimizing the risk of foundation damage. Our commitment extends to properties with tight access, ensuring minimal disruption to your property’s aesthetics.


Clear, Transparent Estimation Process

Clarity is at the core of our pricing philosophy. A thorough assessment of your basement leak informs our documented quote, ensuring a clear understanding of the waterproofing process without hidden fees.


Acclaimed Reviews for GJ MacRae Foundation Repair

Thousands of positive reviews on reputable platforms like Homestars, HGTV, and Google Reviews endorse our reputation. Satisfied customers across Guelph and its surroundings have generously expressed their satisfaction with our workmanship and customer service.

A Word from Our Customers

Anthony Brown
Anthony Brown
We had a leak from two sources in our furnace room, that occurred after a moderate to heavy rainfall. We hired GJ Macrae to excavate by the outside wall, repair the cracks and protect the wall with a membrane and mesh. Part of the trench had to be dug by hand, due to a gas line, and part could be done by machine. The GJ Macrae team were all very skilled and professional, and completed the job in three days. Now the trench has been refilled with the earth and gravel and it will take some time for the ground to settle. We have had a few heavy rains since the job was completed, and our basement is now completely dry! We highly recommend GJ Macrae!
Robert Sraka
Robert Sraka
From our initial discussion with Dean through to the completion of the project I was most impressed with knowledge and professionalism. We had foundation damage from a tree root and they took the time to explain what was required and the steps involved in rectifying the situation. I highly recommend GJ MacRae for any foundation work you may need.
Wendy M
Wendy M
The extremely labour-intensive work done on our heritage home basement by the staff at GJ MacRae was nothing but impressive! They handled it all with great care, attention and finesse every step of the way. Thank you!
Lisa Nicholson
Lisa Nicholson
Our experience with Gavin went very well. We are very pleased with the quality of work that was done. They did an excellent job repairing the leaks and the cleanup was great too. Gavin was a pleasure to deal with. He was very professional and pleasant. We highly recommend this company.
Stephanie Williams
Stephanie Williams
Honest, courteous, thorough, professional, reliable, on-time, clean and trustworthy. Solved our home’s basement water concerns caused from living on the flood plain (water table). Would definitely recommend GJMacRae Ltd as the company to fix your wet basement. Dean and his crew’s attention to detail solved the various challenges of our 91 year old home.
Maria Aleman
Maria Aleman
Dean, came out right away after we noticed water in our basement and provided an estimate. Communication with him was easy and he answered all my questions. Work was done within the week. I had a great experience and will recommend to others.
Jakob Backstrom
Jakob Backstrom
Gavin and his team did a great job. Right from quoting the job I had confidence they can do the job well and had the experience. Great videos on their website really help you understand what’s involved in foundation repair.
Job was done in 2 days which I was amazed it could be done that quickly! That’s a lot of pails of concrete and rock that had to be shuttled in and out of the house! The guys were all very friendly and let me know everything that was being done and answered all my questions! The bowed wall looks solidly supported now with carbon fibre strapping and the water found beneath the floor is now being safely routed through newly installed Plastic Weeper to our sump. We now have peace of mind that we can finish the basement with no leaks or crumbling walls! Thankyou Gavin, Maggi, Ricardo and Jay!
Debra Gold
Debra Gold
We would like to express our gratitude to G.J. McRae for the exceptional job they did in restoring our peace of mind. Every time it rained or snowed, our basement would leak, causing us great distress. However, the crew from G.J. McRae arrived promptly, worked diligently, and efficiently resolved the issue. They even left our backyard in excellent condition, cleaning up after themselves. We cannot thank you enough for the outstanding service and for making us feel confident that the problem is now completely resolved. We are so happy to be able to not worry about this any longer.
Tricia LaDouceur
Tricia LaDouceur
Workers were on time and professional. Quality and value for money. My only issue was the concrete poured was a little uneven causing a small lip near the drain. We managed to smooth it out. Would highly recommend GJ MacRae Foundation Repair.

Leading the Industry in Waterproofing Services

GJ MacRae is Guelph’s unparalleled leader in basement waterproofing. We offer a comprehensive range of basement waterproofing and foundation repair services. Since our establishment in 1975, we have served over 10,000+ satisfied customers, a testament to our commitment to excellence.

We offer comprehensive basement waterproofing services for all homes, including interior and exterior basement waterproofing, underpinning, crack repair, and much more. Our skilled, expert workmanship produces guaranteed basement waterproofing solutions that last the test of time.


Say goodbye to leaky basements because we specialize in basement waterproofing in Toronto for below-grade concrete blocks, poured concrete, field stone, and rubble stone foundation walls. With nearly 50 years of service, getting a dry basement backed by the most reliable warranty in the GTA is just a phone call away.


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 injection methods simply not work? Trust the experts and see why GJ MacRae carries the most reliable foundation crack repair warranty in the business.

weeping tile system

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 benefits of our extensive expertise.

window wells

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

sump pumps

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, basin, and battery backup system are well maintained and ready for the next significant rain or thaw.


We also specialize in structural foundation shoring, concrete footing and replacement, concrete foundation wall reinforcement and replacement, structural underpinning installations, and all phases of below-grade concrete foundation repair, reinforcement, and rebuilding.

Crumbling Foundations

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.


GJ MacRae pioneered 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 for less cost than a standard second-story addition!

carbon fiber

When your foundation walls begin to show signs of cracking or bowing, it’s generally an indication of severe exterior lateral pressure from roots, hydrostatics, or poorly draining soil. Click below to learn more about our complete carbon fiber foundation reinforcement applications.

The GJ MacRae Solution

Basement Waterproofing in Guelph


Our comprehensive basement waterproofing process begins by meticulously identifying all  sources of water entry into your basement.


After exposing the concrete foundation cracks through excavation, we apply hydraulic cement and a quick-drying primer for enhanced adhesion. A specialized rubberized membrane is then used, fortified by a layer of flexible fiberglass mesh.


A second rubberized membrane layer for double protection follows this. A thick plastic layer is added, and drainage board safeguards and protects the membrane during backfilling.


We ensure your weeping tile system functions optimally and backfilling is performed precisely. The result is a quadruple-layered waterproofing solution that guarantees a dry basement for the long term.

LOCAL repairs near you

What Does quality Foundation Repair Look Like?



Transforming Your Basement with GJ MacRae

Unlock the full potential of your basement with GJ MacRae’s waterproofing expertise. Your basement holds limitless possibilities beyond being a damp, unused space. Experience the 21st-century basement—a dry, functional, and inviting environment.

Contact GJ MacRae, your trusted partner for basement waterproofing in Guelph. A simple call connects you to our expert team, ready to address your basement’s needs. Reach out today for a thorough assessment and an ideal basement waterproofing solution. Experience the difference with GJ MacRae – the finest basement waterproofing service in Guelph.


Our Service Areas

At GJ MacRae, we take pride in extending our services across the GTA to meet our valued customers’ unique needs, and our dedicated team is committed to delivering top-notch solutions all year long. Our expansive service areas are a testament to our unwavering commitment to the highest quality foundation repair services and customer satisfaction in the GTA.


Schedule a Free Consultation Today

Fill out our request form and we will contact you as soon as possible for a free foundation repair consultation!

Frequently Asked Questions

Basement Waterproofing is a method that prevents water from penetrating through the concrete foundation walls of your house. Basement Waterproofing is vital because it helps to keep your basement dry.

There is no one-size-fits-all approach, and the solution to a waterproofed basement generally requires a design specifically tailored to your issues directly. Call us today for a quote; we would be happy to develop a repair plan for you!

Short answer: Yes. But you must work with a professional basement waterproofing repair company to produce a solution that delivers a long-term result.

This process generally has two steps: Repairing the crack with hydraulic cement is typically the first step. Then, that patch is properly waterproofed with a rubberized membrane afterward. These are two separate issues and need to be addressed with different solutions.

Efflorescence – a calcium mineral deposit left behind after water or moisture was present on concrete.

GJ MacRae provides solutions with long-term warranties. Considerations include the type of waterproofing system and the sump system you install. Different options offer different levels of protection.

Some of the most common sources of basement water damage include leaky basement walls, clogged or damaged weeping tile systems, foundation wall cracks, leaky window wells, 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, possessions, and indoor air quality, so keeping your basement dry is crucial.

Hydraulic cement is an expansive-masonry-based product used to patch cracks in concrete walls and 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 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 an industry-leading fully transferable warranty. Most of our foundation repair, basement waterproofing, and crawl space repair work is backed by a 15-year transferable warranty.

Expert Waterproofing Services for Your Home

GJ MacRae Foundation Repair has been the industry leader for reliable basement waterproofing in the Greater Toronto Area Since 1975. Nearly five decades of experience inform our proven multi-stage repair process based on below-grade drainage considerations that allow us to waterproof concrete blocks, poured walls, and stone rubble foundation walls properly for the long term. Our repair solutions for leaking foundation cracks include using bitumen-based barrier membranes and high-efficiency weeping tile systems, which give us the edge in reliability and allow for the most robust foundation repair warranty available today in the GTA. Experience the GJ MacRae difference for year-round basement leak repairs in Toronto, Oakville, Mississauga, Burlington, Hamilton, Milton, and Georgetown. If you spot foundation walls, leaky foundations, or any other basement waterproofing issues in your house, reach out and call us today at (905) 824-2557.

Quality Foundation Repair Done Right.

Service Areas in Guelph

We service the Guelph area including Acton,Cambridge, Kitchener, Waterloo, Elmira, Georgetown, and more.