Basement Waterproofing Services in GTA
Basement Waterproofing Services in Toronto, Mississauga, Hamilton, Oakville, St Catharines and Burlington


Years of Experience

Years of Warranty

Happy Clients


25+ Years of Local Expertise in Basement Waterproofing Services in the GTA
01. 25+ years, award‑winning basement waterproofing company
02. we deliver tailored, high-performance systems
03. Water Basement stays dry and your family remains secure.
What Is Basement Waterproofing?
Basement waterproofing is the professional process of preventing water intrusion and moisture buildup in your home’s lowest levels. It combines exterior and interior methods—such as high‑performance waterproofing membranes, foundation waterproofing systems, precision crack injections, and drain tile installations—to form a complete moisture barrier. Our process begins with a detailed inspection using moisture meters and video camera diagnostics to identify leaks, cracks, and hydrostatic pressure points. We then apply durable coatings and install sub‑slab drainage or perimeter drain systems. Finished with a sump pump installation when needed, this comprehensive approach stops flooding, inhibits mold growth, and protects against long‑term structural damage—all backed by our 25‑year transferable warranty.
Comprehensive Basement Waterproofing Services for Structural & Water Intrusion Protection
Enhanced Indoor Environment & Property Value
Benefit: By keeping your basement dry, our solutions improve indoor air quality, create a healthier living space, and enhance your property’s resale value.
Regulatory Compliance & Continuous Protection
Benefit: Our professional installations ensure compliance with municipal regulations (including utility locates to avoid fines up to $12,000), qualify you for insurance discounts and rebates, and deliver continuous protection through advanced systems like battery-backed sump pumps.

Step-by-Step Basement Waterproofing Installation Process
Assessment & Planning
Surface Preparation
System Installation
Testing & Maintenance
Benefits of Basement Waterproofing

Structural Protection
Cost Savings
Enhanced Living Space
Improved Indoor Air Quality
Increased Property Value & Compliance
Basement Waterproofing Installation Process
Area Preparation
Protect Workspaces: Cover surrounding areas with tarps to maintain a clean and controlled environment.
Surface Exposure: Remove existing wall coverings to fully expose the concrete, cinder block, or brick surfaces.
Environmental Setup: Ensure the area is free of debris and properly organized for safe, efficient work.

Core Installation
Trenching & Excavation: Excavate a precise trench along the wall following detailed diagrams, ensuring proper disposal of soils and debris.
Membrane Application: Install the Delta MS drainage membrane along the exposed wall surfaces—drilling through blocks if necessary—and secure it with Delta clips.
Weeping Tile Integration: Set up the Big O weeping tile with a filter and connect it to the drainage system for optimal water flow management.
Finalization & Cleanup
Backfilling & Cementing: Encase the weeping tile with gravel, then backfill and re-cement the floor using a trowel finish.
Thorough Cleanup: Remove all tarps and protective coverings, and clean the work area to restore it to its original state.
Quality Inspection: Perform a final inspection to ensure that the installation meets quality standards and provides effective, long-term waterproofing.

How Our Exterior Waterproofing Process Works
Preparation & Excavation
Area Protection: Use tarps to safeguard the landscape and adjacent property areas.
Foundation Exposure: Excavate down to the footing level to fully expose the foundation wall and footing.
Utility Compliance: Perform mandatory utility locates (hydro, gas, telecom) to ensure a safe, bylaw-compliant excavation

Surface Preparation & Barrier Application
Surface Cleaning & Repair: Clean the foundation wall, grind out cracks into a V-shape, and repair with hydraulic cement followed by application of a parging mix.
Waterproofing Barrier: Apply a high-quality layer of Aquabloc 720-38 to form a durable, water-based waterproof barrier that outperforms traditional methods.
Reinforcement: Install fiber mesh and add an additional protective layer (e.g., a 4mm poly layer) for enhanced durability against moisture intrusion.
Drainage Installation & Final Backfilling
Weeping Tile Installation: Remove old drainage components and install a new Big O weeper with filter, ensuring efficient water channeling away from the foundation.
Backfilling & Compaction: Encase the weeper with ¾” clear gravel, backfill the excavation, and compact the soil every 2ft for a stable finish.
Final Inspection & Cleanup: Conduct a thorough inspection and remove all debris, restoring the area to its original condition and ensuring long-term performance.

Why Waterproofing4Less Is Trusted for Basement Waterproofing Services in GTA
25+ Years of Expertise
Best Service

Cutting-Edge Technology
Premium Materials
Basement Waterproofing Project Case Study
Burlington Basement Transformation


Toronto Comprehensive Waterproofing
Best Service

Phone Number

Blogs
What Our Customers Say
waah ladkeTrustindex verifies that the original source of the review is Google. We had multiple cracks in the basement, called waterproofing4less and Slava came for the inspection. They installed basement waterproofing both inside and outside for our basement at a very reasonable price as compared to market. They were fast and highly experienced team. Thank you Slava for the great service. Love TayalTrustindex verifies that the original source of the review is Google. I had issues with drainage in my house in Oakville and waterproofing4Less helped us in full drain replacement. Excellent work by them. Would recommend this company to anyone. Deepak SinghTrustindex verifies that the original source of the review is Google. We were having constant basement leaks whenever it rained, and water even started seeping through the walls. After getting a few quotes, we decided to go ahead with full exterior and interior basement waterproofing along with a backwater valve installation. Waterproofing4less team explained everything in detail, kept us informed each day, and handled the whole process very neatly. They dug around the foundation, sealed all cracks, and installed an interior system with sump pump connection. The backwater valve gave us peace of mind knowing our basement won’t flood again. Everything looks clean and professional now, and our basement has been completely dry since. Highly recommend for their honest advice and hard work! Most importantly all at an affordable price. Pranjal RaniTrustindex verifies that the original source of the review is Google. We were having constant issues with water seeping into our basement during heavy rains, and it started to get worse over time. After doing some research, we got in touch with waterproofing4less and their communication was fantastic right from the first call. Slava gave us quick response, detailed inspection, and clear explanation of what was causing the problem. They recommended a backwater valve installation along with basement waterproofing to stop future flooding. The team arrived on schedule, completed the work efficiently, and kept us updated throughout. Our basement has stayed completely dry since, and we finally feel confident even during the heaviest storms. Great experience and an honest company. BHAVNA PRAJAPATITrustindex verifies that the original source of the review is Google. Amazing experience working with waterproofing4less. We had a wet basement issue since a long time in our basement in Mississauga and we called them for the resolution. Carl and crew came and suggested us basement waterproofing and weeping tile replacement. We were scared first but all the work went so smoothly and the crew was so polite and passionate about what they do. They explained us everything in detail and price was under our budget too. Highly recommended anshul saxenaTrustindex verifies that the original source of the review is Google. We saw water leaking into our basement in Mississauga and got worried and we called multiple basement waterproofing contractors but we were hardly satisfied with their knowledge. At last we called waterproofing4less and Slava came with his crew and suggested basement waterproofing both inside and outside for long lasting results. Highly impressed with their work ethics and knowledge. Their quote was very reasonable and under our budget and team was very friendly too. Highly recommend for anyone looking for basement waterproofing services in Mississauga and nearby areas. Akash AgrawalTrustindex verifies that the original source of the review is Google. We saw some dampness in the newly built finished basement and called multiple basement waterproofing contractors but we're not satisfied with their knowledge. We finally called waterproofing4less and Carl came for the free inspection. He explained everything and suggested exterior basement waterproofing with sump pump installation. Had no wet basement issues till then. The best part was most affordable price. I would like to recommend waterproofing4less for basement waterproofing in Toronto and GTA. Usha TayalTrustindex verifies that the original source of the review is Google. Amazing work done by Waterproofing4Less by installing backwater valve in my Burlington house. We got rebate from them as they are preferred contractor in halton region. Super cheap, fast, reliable team. Got cheapest quote from them after trying around 7-8 waterproofing companies in the town. They cleaned the full basement after their work. Thank you Carl for the great work. I would recommend Waterproofing4Less for backwater valve installation in Burlington. Aanchal ChughTrustindex verifies that the original source of the review is Google. Waterproofing4Less completely transformed my damp basement into a dry space. They successfully installed sump pump in my toronto house along with exterior waterproofing which includes 16ft of weeping tile replacement. The team was very professional, fast, knowledgeable and price was very reasonable, I would say I got cheapest quote from them. I would definitely recommend Waterproofing4Less for exterior basement waterproofing in Toronto. S KTrustindex verifies that the original source of the review is Google. Reliable waterproofing company with prompt service and skilled technicians. They effectively addressed my basement leaks, using quality materials and thorough methods. Fair pricing and clear communication throughout the process. Highly recommend for anyone needing dependable waterproofing solutions.
Waterproofing4Less - FAQ's
01. What services does Waterproofing4Less offer?
We specialize in comprehensive waterproofing solutions, including basement waterproofing (both interior and exterior), sump pump installation, backwater valve installation, and drain repair & replacement. Our tailored approach ensures your home is protected from water damage and flooding.
02. Which areas do you serve?
03. What kind of warranty do you offer on your work?
04. How do I know if my home needs waterproofing?
05. What is your basement waterproofing process?
06. Do you offer emergency waterproofing services?
07. How do you ensure compliance with local bylaws?
08. How can I get a consultation or quote for my waterproofing needs?
Get Your Drainage And Waterproofing Issues Resolved Today
