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Our basement waterproofing process is designed to identify the source of water intrusion, assess interior and exterior conditions, and apply the right waterproofing solution. We focus on long-term protection, clear communication, and proven methods — from initial inspection to final recommendations.
We begin with a detailed inspection of your basement to identify visible signs of moisture, leaks, or dampness. Our specialists examine interior walls, floors, foundation surfaces, and affected areas to understand how water is entering the basement.
We assess drainage conditions, foundation areas, and water entry points to identify how moisture is entering the basement and determine the most effective waterproofing solution.
Basement water problems often originate from exterior groundwater pressure, surface water, or interior moisture buildup. We assess both interior conditions and exterior factors such as grading, drainage, and foundation exposure to determine contributing causes.
Based on our findings, we determine whether interior waterproofing systems, exterior waterproofing methods, or a combination of both are required. Solutions are tailored to address the specific water intrusion issues affecting your basement.
Once the waterproofing plan is approved, our team installs the selected interior or exterior systems using industry-proven materials. All work is reviewed to ensure proper installation and effective water control.
We review the completed work, explain how the waterproofing system protects your basement, and provide guidance on maintaining a dry, protected space. Our goal is to deliver reliable results and long-term peace of mind.
A professional basement moisture detection process provides accurate insight into basement conditions and helps reduce uncertainty when addressing potential moisture-related concerns.
Know a homeowner, property manager, or business dealing with water damage, flooding, mould, storm damage, or another property emergency? Refer them to our team and earn rewards for qualified projects.
Whether you’re a returning client, property manager, or insurance professional, we offer preferred pricing as part of our long-term service relationships.





Basement water issues don’t always show obvious signs at first. Moisture intrusion, minor leaks, and damp conditions can develop gradually from interior or exterior sources. Addressing waterproofing concerns early helps prevent structural damage, unhealthy indoor environments, and costly repairs over time.
Professional basement waterproofing provides clear, lasting protection against moisture intrusion and helps maintain a dry, healthier basement environment over time.
Posted on Gord PalbodTrustindex verifies that the original source of the review is Google. outstanding crew. thank you for an excellent job to Farzam and his crew.Posted on Khadijeh ChoupanTrustindex verifies that the original source of the review is Google. Thank you for an excellent job Majid. All that terrible cigarette smell and now it's all gone. It was like majic, Majid. Thank you. Thank you.Posted on Deb PyneTrustindex verifies that the original source of the review is Google. I had googled for heavy duty cleaning that was needed for my Brother, (has some physical issues) I supplied them with pictures. They sent me a quote & the job was scheduled immediately as it was time sensitive. I met the GTA Gentleman @ the front door of my brother’s condo. They went straight to work & did such an amazing job. I was thrilled with the out come as it was a big job. I would definitely recommend them to anyone!! Very professional, friendly & very respectfulPosted on Amin HamediTrustindex verifies that the original source of the review is Google. The 247-365 Restoration team responded quickly, arrived on time, and immediately took control of the situation. They were professional, well-organized, and clearly experienced in flood cleanup. Everything was explained step by step, and the cleanup was handled efficiently and carefully. A trustworthy choice for emergency water damage and flood restoration services.Posted on Sikander KanjiTrustindex verifies that the original source of the review is Google. Amazing experience, very professional, clean work, helpful and amazing crew.Posted on Tiana RoseTrustindex verifies that the original source of the review is Google. Nijen's team replaced and build a privacy wall on our back deck last Friday. They were professional, and efficient and we couldn't be happier with the end result. Thank you to Nijen and his team. We would definitely hire them again for our renovation needs and recommend them to everyone. TianaPosted on Mathew WhiteTrustindex verifies that the original source of the review is Google. I engaged First On Site as a preferred vendor through my insurance provider following an unsatisfactory experience with another restoration company. Understandably, I approached the process with some hesitation. From the outset, the team at First On Site demonstrated exceptional professionalism. They maintained clear and consistent communication, keeping me informed of all timelines and progress updates. Their responsiveness and attention to detail far exceeded my expectations. Upon arrival, the crew began work immediately and remained focused and diligent throughout the day. Their efficiency, professionalism, and respect for my property were commendable. Additionally, the team effectively liaised with my insurance company, ensuring the scope of work was completed exactly as described and to a high standard. I would not hesitate to recommend First On Site to anyone requiring disaster management or restoration services. Their commitment to quality and client satisfaction is truly exemplary.Posted on siddharth khannaTrustindex verifies that the original source of the review is Google. I called them at 7 am for an emergency basement pipe burst leakage and they sent out a crew within a couple of hours who knew exactly what needed to be done. They documented the damage thoroughly for insurance purposes and I faced no trouble. The team at GTA are professional and helpful. Totally recommend!Posted on Mark EsdaleTrustindex verifies that the original source of the review is Google. After a ice storm related basement flood the GTA team showed us what service meant!. They were here very quickly, with the proper drying equipment and some great staff members. They removed old carpeting/under padding and the bottom 12 inches of drywall from the affected flood area, installed and left drying machines, were back in a week to repair the drywall. We could not have asked for a better job, very glad we chose them.
Guaranteed on-site arrival within 45 minutes of your call, day or night.
Certified restoration, environmental inspection, & property assessment.
Fast scheduling available across the GTA, and Southern Ontario.
Professional documentation and support for insurance-related claims.
Honest, upfront pricing with no hidden fees or surprise charges.
Serving Toronto, the GTA, and Southern Ontario for 25+ years.
With over 25 years of hands-on experience and more than 6,000 completed projects, we provide professional basement waterproofing and wet basement solutions with detailed moisture assessments, drainage evaluations, and long-term water intrusion protection strategies. Our experienced team works to identify basement moisture sources, control water entry, and help prevent ongoing seepage, structural deterioration, and mould-related issues throughout residential and commercial properties.
Clear & Transparent Waterproofing Pricing
Accurate Assessment & Data-Driven Waterproofing
Experienced Basement Waterproofing Contractors
Our basement waterproofing team works to identify water entry points, assess moisture conditions, and help property owners better understand the causes of wet basement and ongoing moisture issues throughout residential and commercial properties.
Clear answers to common questions about basement waterproofing, wet basement issues, water intrusion, drainage solutions, and long-term moisture protection for residential and commercial properties.
Yes. We provide professional basement waterproofing services designed to address both interior moisture problems and exterior water intrusion. Our solutions are tailored to the specific conditions affecting your basement.
Common signs include water seepage, damp walls or floors, musty odors, visible moisture, or recurring wet basement conditions. Even if water issues are not obvious, professional waterproofing can help identify underlying interior or exterior causes before they worsen.
Most basement waterproofing assessments and installations vary depending on the size of the basement and the type of solution required. An initial evaluation typically takes a few hours, while installation timelines are clearly explained before work begins.
Yes. Our interior and exterior waterproofing methods are safe for occupied homes and use industry-approved materials and installation practices. We work carefully to minimize disruption during the process.
Basement waterproofing may include interior drainage systems, moisture barriers, or exterior waterproofing methods designed to stop water before it enters the basement. The approach depends on where water intrusion is occurring and how severe the issue is.
Absolutely. Proper basement waterproofing helps prevent recurring leaks, reduces moisture buildup, and protects your basement from long-term water damage. Early action often reduces repair costs and improves indoor conditions.
If you’re dealing with a wet basement, water intrusion, or ongoing moisture issues, professional basement waterproofing can help protect your home. Our team identifies interior and exterior water sources and provides effective, long-term waterproofing solutions tailored to your basement’s needs.
Serving Toronto, the GTA, and communities across Southern Ontario with rapid response restoration, waterproofing, and emergency property services when and where you need them most.