Stop Water at Its Source Exterior Waterproofing Toronto
Prevent costly foundation damage with expert waterproofing solutions designed for Toronto’s climate.
Why Exterior Waterproofing is Essential for Toronto Homes
Homes in Toronto face unique challenges when it comes to basement waterproofing. The region’s heavy rainfall, clay-rich soils, and freeze-thaw cycles put constant pressure on foundations, increasing the risk of water intrusion and structural damage. If left unaddressed, this can lead to foundation cracks, mold growth, and costly repairs that threaten the safety and value of your property.
Exterior waterproofing is the first line of defense against these issues, providing long-term protection by addressing the root cause of water intrusion. Unlike interior waterproofing, which manages water that has already entered your basement, exterior waterproofing prevents it from getting in at all. This approach protects your home’s structural integrity, preserves its value, and provides peace of mind.

Common Signs You Need Exterior Waterproofing
- Foundation Cracks – Visible cracks in your foundation walls or floor
- Efflorescence – White, chalky deposits on basement walls
- 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
- Pooling Water Around the Foundation – Indicates poor drainage and potential water damage
If you’ve noticed any of these signs, it’s time to consider professional exterior waterproofing. At SDM Contractor, we offer comprehensive solutions that address these issues at the source, ensuring your basement remains dry, healthy, and structurally sound.
Our Comprehensive Exterior Waterproofing Services
The first step in exterior 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
Effective exterior 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
Basement windows are another common entry point for water. Properly installed window wells and drainage systems help prevent water from pooling around these openings.
- Heavy-Duty Window Wells – Protects basement windows from water damage
- Gravel and Drain Systems – Directs water away from the window and foundation
- Well Covers and Liners – Keeps debris and moisture out, reducing maintenance needs
Why Choose SDM Contractor for Exterior 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%👍👍