Business Details
50+ Years
experience
Emergency
services
Trusted Basement Waterproofing Toronto Since 1975
GJ MacRae Foundation Repair has been a trusted leader in basement waterproofing and foundation repair since 1975. As a second-generation family-owned business, we combine decades of hands-on experience with industry-leading techniques to address complex foundation challenges. Our team specializes in hand-excavated waterproofing, structural reinforcement, and weeping tile systems, ensuring long-term solutions for residential properties across the Greater Toronto Area. With over 10,000 warranties issued, we prioritize meticulous attention to detail, using high-quality materials like bitumen-based membranes and carbon fiber reinforcement.Operating year-round, we deliver reliable service for both emergency repairs and planned renovations, backed by a commitment to transparency and customer satisfaction. Our expertise spans heritage restoration, underpinning installations, and modern drainage solutions, making us a one-stop resource for foundation integrity. By focusing exclusively on foundation repair since our founding, weve built a reputation for technical excellence and durable results that protect homeowners investments.
Services
Basement Waterproofing
Foundation Crack Repair
Sump Pump Installation
Weeping Tile Systems
Carbon Fiber Reinforcement
Basement Underpinning
Crumbling Foundations Repair
Window Well Repair
Structural Wall Reinforcement
French Drains Installation
Details
- Year established: 1975
Highlights and features
- We offer 50 years of specialized foundation repair expertise
- Our hand-excavation method preserves landscaping and grounds
- Family-owned with second-generation technical leadership
- 10,000+ warranties issued for long-term protection
- Pioneers of overflow underpinning in the GTA
What people say
Professional, punctual, courteous
Perfect waterproofing results
Expertise in heritage foundations
Clean and effective work
No extra charge fixes
Services
Basement Waterproofing
Our comprehensive basement waterproofing solutions protect homes from water intrusion using advanced rubberized membranes and drainage systems. We address both interior and exterior vulnerabilities, ensuring complete moisture control for poured concrete, block, and stone foundations. With hand-excavation techniques that minimize landscape disruption, we install high-efficiency weeping tile systems and apply multi-layer protective coatings that flex with structural movements. These methods create permanent barriers against hydrostatic pressure, backed by the industrys most comprehensive warranty.
Foundation Crack Repair
Specializing in structural foundation crack repair, we use hydraulic cement and carbon fiber reinforcement to restore wall integrity. Our process begins with precise crack mapping and pressure testing to identify root causes like soil movement or hydrostatic pressure. We then implement permanent solutions including epoxy injections for non-structural cracks and steel reinforcement for load-bearing wall repairs. All work includes moisture barrier installation to prevent future water infiltration through compromised areas.
Weeping Tile Systems
We design and install both interior and exterior weeping tile systems to manage groundwater effectively. Our modern drainage solutions combine perforated piping with gravel-less chambers that resist clogging while maintaining optimal water flow. For older systems, we perform complete replacements using trenchless technology where possible, minimizing disruption to finished landscapes while improving overall drainage efficiency for long-term foundation protection.
Sump Pump Installation
Our sump pump installations feature dual-pump systems with battery backups to ensure continuous operation during power outages. We use cast-iron pumps with mechanical seals for durability in high-water environments. Each installation includes basin sizing calculations based on property drainage patterns, ensuring optimal performance during heavy rainfall events. We also offer maintenance programs to keep systems operating at peak efficiency year-round.
Carbon Fiber Reinforcement
For bowing or cracked foundation walls, we apply carbon fiber reinforcement systems that provide structural stability without extensive excavation. Our engineered solutions use aerospace-grade carbon fiber sheets bonded to concrete surfaces using epoxy resins. This method increases wall load capacity by up to 40% while maintaining a low profile that doesn't interfere with basement finishes, making it ideal for both remedial repairs and preventive strengthening.
Questions
What causes basement foundation wall cracks?
Hydrostatic pressure, concrete shrinkage, soil expansion, and improper drainage cause foundation cracks. Our experts identify root causes during inspections.
Can I repair basement cracks myself?
DIY repairs are not recommended. Professional assessment and structural solutions ensure permanent, code-compliant repairs.
How long does crack repair take?
Most repairs complete in 1-3 days depending on damage extent and required structural reinforcement.
What waterproofing methods do you use?
We combine rubberized membranes, weeping tile systems, and carbon fiber reinforcement for comprehensive, long-lasting protection.
Do you offer warranties?
We provide the industry’s most comprehensive warranty covering materials and workmanship for structural repairs.
Are emergency repairs available?
Yes, we offer urgent leak repair services to prevent further foundation damage during critical situations.
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Reviews (5)
James Ghandour
May 22, 2021
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I trusted Dean and Milan to do some parging work for me. They did an absolutely fantastic job. Had a small issue over winter and they came back in the spring to fix it - no hesitation. Highly Recommend!
Adam D.
Dec 05, 2020
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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!
Maureen Rolph
Oct 28, 2019
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I highly recommend Dean and his entire crew! What I thought was only one leak was actually
Two leaks. After learning of the second leak Dean was there to save the day and fixed it right away
I cant say enough of Oskar and his crew who worked tirelessly to fix the issues, they were fast efficient and always cleaned up after themselves at the end of the day!!!!! Any questions I had they took the time to explain and answer all of them.
GJ MACRAE is your answer to all your basement woes.
5 PLUS PLUS
Thank you again for making my experience a pleasurable and stress free
Maureen
Two leaks. After learning of the second leak Dean was there to save the day and fixed it right away
I cant say enough of Oskar and his crew who worked tirelessly to fix the issues, they were fast efficient and always cleaned up after themselves at the end of the day!!!!! Any questions I had they took the time to explain and answer all of them.
GJ MACRAE is your answer to all your basement woes.
5 PLUS PLUS
Thank you again for making my experience a pleasurable and stress free
Maureen
Josh Kettenbach
Nov 28, 2018
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Dean was very professional and efficient. The team arrived exactly when they said they would and did a great job. Even with a wrench thrown into the plan (we live in a link house that is connected to our neighbors house underground). We had multiple people come out to quote and GJ Macrae was the best of the best. I wouldn't trust my foundation to anyone else.
Michael Courtemanche
Jul 12, 2018
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Had a fantastic experience with this company. I had two different leaks in my foundation. They were able to come and deal with the issues very quickly unlike other companies who wanted me to wait 2 months to even get a quote. The gentlemen they sent over were very quick but also very polite and did great work. Hopefully I'm finished with foundation repair now and my house decides to behave itself ;-)
