Foundation Waterproofing Toronto Protect Your Home’s Structural Integrity
Prevent cracks, leaks, and costly structural damage with professional foundation waterproofing.
Why Foundation Waterproofing is Essential for Toronto Homes
Your foundation is the backbone of your home. It supports the entire structure, keeps your floors level, and protects your property from the forces of nature. However, in Toronto, where heavy rainfall, freeze-thaw cycles, and clay-rich soils are common, your foundation is constantly under pressure. Without proper waterproofing, these conditions can lead to foundation cracks, structural instability, and water damage that can significantly reduce your property’s value and safety.
Foundation waterproofing is the most effective way to protect your home’s structural integrity and prevent costly water damage. Unlike interior waterproofing, which manages water that has already entered your basement, foundation waterproofing keeps water from penetrating your home in the first place. This proactive approach preserves your property value, reduces maintenance costs, and provides peace of mind.
Common Signs You Need Foundation Waterproofing
- Foundation Cracks – Visible cracks in your foundation walls or floors
- Efflorescence – White, chalky deposits on basement walls indicating moisture seepage
- Basement Leaks or Dampness – Persistent water intrusion during heavy rain
- Bowing or Shifting Walls – Signs of foundational stress due to hydrostatic pressure
- Musty Odors or Mold Growth – Persistent dampness leading to poor indoor air quality
- Uneven Floors or Sticking Doors – Signs that your foundation may be shifting
If you’ve noticed any of these signs, it’s time to consider professional foundation waterproofing. At SDM Contractor, we provide comprehensive solutions that address these issues at the source, ensuring your basement remains dry, healthy, and structurally sound.

Our Comprehensive Foundation Waterproofing Services
The first step in foundation waterproofing is to excavate the foundation and apply a waterproof seal. This process creates a protective barrier around your home, preventing water from penetrating the foundation walls.
- Deep Excavation – Reaches the base of the foundation to ensure complete protection
- Waterproof Coatings and Sealants – Prevents water from entering your home through cracks or porous concrete
- Foundation Repairs – Fixes any existing cracks or weaknesses before applying the waterproof barrier
Cracks in your foundation can compromise the structural integrity of your home and allow water to seep in. We use high-pressure epoxy injections to fill these cracks, restoring your foundation’s strength and preventing future leaks.
- Permanent Crack Repair – Fills and seals cracks from the inside
- Structural Reinforcement – Restores the strength and stability of compromised foundations
- Waterproof Sealing – Blocks water from penetrating the foundation
Effective foundation waterproofing relies on proper drainage. Without a way to direct water away from your foundation, even the best waterproofing membranes can fail. We install comprehensive drainage systems to keep your foundation dry.
- French Drains (Weeping Tiles) – Channels water away from your foundation to reduce hydrostatic pressure
- Grading and Landscaping – Ensures proper water flow away from your home
- Gutter and Downspout Extensions – Prevents water from pooling near the foundation
Applying a protective membrane over the foundation is one of the most effective ways to prevent water intrusion. These heavy-duty barriers are designed to withstand extreme weather and provide long-term protection.
- Thick, Flexible Membranes – Creates a durable, waterproof barrier
- Self-Adhesive and Spray-Applied Options – Customized to suit different foundation types
- Mold-Resistant Materials – Reduces the risk of mold growth and water damage
Why Choose SDM Contractor for Foundation Waterproofing in Toronto?
Local Expertise – We understand Toronto’s unique climate and soil conditions.
Comprehensive Solutions – From deep foundation sealing to effective drainage, we handle it all.
High-Quality Materials – We use only the best products for long-lasting protection.
Customer Satisfaction – Proven track record with satisfied homeowners.
Transparent Pricing – No hidden costs, just clear, upfront quotes.

Testimonials
Testimonials
Herpall Sahota2024-09-14Trustindex verifies that the original source of the review is Google. Dusan and his Team deliver quality work in a timely fashion and of the highest standard. It was a pleasure to work with him and I would recommend his Team for all of your waterproofing needs. Thank You Dusan and Team. Pieter Hofstee2024-03-11Trustindex verifies that the original source of the review is Google. Dusan & his team were great! MR Verxcy2024-02-06Trustindex verifies that the original source of the review is Google. Amazing work. I hired sdm contractors Underpinning to do underpinning for my basement and I am very impressed with their work. Dion and his team were professional, courteous, and efficient throughout the whole process. They explained everything to me clearly and answered all my questions. They completed the job on time and on budget, and left the site clean and tidy. My basement is now 2' feet higher and is much more spacious and comfortable, and I am very happy with the results. I would highly recommend sdm contractors Underpinning to anyone looking for underpinning services in Toronto. They are the best in the business! Jozef Holub2024-02-06Trustindex verifies that the original source of the review is Google. Dusan and the Underpinners are perhaps the best contractors I have ever worked with. They are responsive, knowledgable, timely, thorough, friendly and considerate. They completed our underpinning on budget and in less time than expected. The job site was always clean and tidy and every one of the tradespeople on site was friendly and courteous and treated my home as if it was their own. Dusan and the crew demonstrated their in depth knowledge of the work required from start to finish. I would recommend The Underpinners to every one of my clients and friends. Truly a world class company. Erik Ziga2023-08-18Trustindex verifies that the original source of the review is Google. I did my house with SDM contractor. The did amazing.job I will recommend this company to everyone. Thank you, SDM. RTI Instructor2023-08-08Trustindex verifies that the original source of the review is Google. I am very impressed with how organized and professional Dusan and his team were. They completed the work on time and on budget, no surprises, even with the extreme heat they kept working and finished to stay on schedule. Every request was answered with a “no problem”, I would absolutely hire them again in future. Definitely recommend. nikolas dunka2023-07-28Trustindex verifies that the original source of the review is Google. Wery good company l highly recommend you to these company SDM CONTRACTOR vladimir kocko2023-07-19Trustindex verifies that the original source of the review is Google. Wery good company l recommend this company 100% Stanislav Gabčo2023-07-12Trustindex verifies that the original source of the review is Google. This company is really good I recommend to everyone 100%👍👍