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Business Details
36 Years
experience
Trusted Commercial Waterproofing Experts Since 1990
Established in 1990, our company has built a reputation as a leader in commercial waterproofing and structural restoration. With over 100 years of combined construction management experience among our team, we deliver tailored solutions for complex projects across Southern Ontario. As a fully bonded contractor insured up to $10 million, we prioritize safety, quality, and client satisfaction. Our expertise spans waterproofing, concrete repair, and roofing for commercial, industrial, and heritage properties.

Certified by leading manufacturers and recognized for excellence through industry awards, we combine advanced inspection tools with proven methodologies to ensure long-lasting results. Our commitment to transparency and accountability has earned us high ratings on platforms like Google and HomeStars, solidifying our position as a trusted partner for property managers and developers seeking durable, code-compliant solutions.
Services
Waterproofing Restoration Roofing Concrete Repair Structural Repairs
Details
  • Year established: 1990
Highlights and features
  • Established in 1990 with 30+ years of commercial waterproofing expertise
  • Certified applicators for leading manufacturers like Tremco and Soprema
  • Fully bonded contractor with $10 million liability insurance coverage
  • Backed by material and labor warranties on all applications
  • Award-winning reputation with high ratings on Google and HomeStars
Services
Waterproofing
We provide comprehensive commercial waterproofing solutions tailored to diverse structures. Our services include open cut waterproofing, spray-applied systems, and crack injection methods. Using industry-leading products from manufacturers like Tremco and Soprema, we ensure long-term protection against water intrusion for new constructions, retrofits, and restoration projects.
Restoration
Our restoration services address failed membranes and aging infrastructure with cost-effective solutions. Specializing in concrete restoration and structural repairs, we employ advanced techniques like FLIR infrared diagnostics and moisture analysis to restore building integrity while extending service life for commercial properties.
Roofing
We offer complete roofing solutions for commercial and industrial buildings. Our services include membrane installation, coating systems, and emergency leak repairs. With expertise in both new construction and retrofit applications, we deliver durable roofing systems that meet specific project requirements and environmental conditions.
Concrete Repair
Our dedicated concrete division handles structural repairs, foundation work, and specialized builds. We perform slab restoration, forming, and reinforcement using engineered solutions that meet safety standards. Our team addresses cracks, spalling, and deterioration to restore structural integrity and functionality.
Heritage Restoration
We specialize in sensitive restoration of heritage buildings and houses of worship. Our approach combines traditional techniques with modern waterproofing methods to preserve architectural integrity. We address water damage and structural issues while maintaining historical accuracy and compliance with preservation standards.
Questions
What commercial property types do you service?
We work on commercial buildings, industrial facilities, high-rises, retail centers, historic buildings, and houses of worship across the GTA and Southern Ontario.
What waterproofing methods do you offer?
Our services include open cut waterproofing, spray-applied systems, crack injection, curtain wall injection, and specialized solutions for elevator pits and ICF structures.
Do you provide warranties?
Yes, all our work includes comprehensive material and labor warranties, with $10 million liability insurance coverage for commercial client protection.
Are you certified by manufacturers?
We are certified applicators for leading brands including Tremco, Henry, Soprema, Carlisle, and W.R. Meadows, ensuring proper installation of premium products.
What areas do you cover?
We serve Toronto, Mississauga, Vaughan, Hamilton, and most Southern Ontario locations for commercial waterproofing and restoration projects.
Do you handle residential projects?
Yes, we offer residential waterproofing services through our dedicated division, applying the same quality standards trusted by commercial clients.
Reviews (7)
Jonathan Sarafinchin
Nov 02, 2021 Report
Positive:Quality
Gemil and his team were flawless from start to finish. The stayed on timeline, the guys worked tirelessly and everyone communicated well right to the finish line. Really appreciate the professionalism and all the great advice. I highly recommend Gemil!!
Service:Waterproofing
Stephen Black
Aug 21, 2021 Report
Outstanding. We called Nusite to waterproof our house that was built in the 30s. Waterproofing had to be performed from the inside due to the benchfooting. Gemil was our rep and his knowledge and professionalism was obvious and very much appreciated. The Nusite team came in and the job was quick, clean and stress free. Gemil made everything easy thanks Gemil! I would definitely recommend Nusite for all concrete needs.
Lily McMillan
Aug 17, 2021 Report
I cannot express how highly I recommend Nusite. They are highly professional, on time, responsive to questions, considerate to budget while keeping quality and proper finish of the job in mind. Gemil was always available to answer any questions and made the planning and execution seamless. Gemil and his team took exceptional care of all the nuances of the renovation/ construction and kept me fully informed at all times while keeping it organized and as simple as possible throughout the process.
Jacob Hardie
Jun 12, 2021 Report
My home was built in the 20s. I hired NUSITE because my neighbour was using them so I reached out. Gemil was my rep. He is extremely knowledgeable about his craft and passionate about it also. He made daily visits to my home to keep tabs on his staff. He didnt just secure the sale and bail. My home required benching and waterproofing. Gemil is a walking encyclopedia on construction and water. I learned a lot from him and he has a jovial personality since I was very stressed about my situation. Aside from interior waterproofing Im doing the same to the outside also over the next year. NUSITE
Gizelle Wolfe
Feb 28, 2021 Report
I am so happy we chose Nusite to waterproof our basement. We had water seepage and a mold smell coming from our basement. Gemil assessed our situation and gave his honest recommendation. It has been 2.5 years since the work has been done and our basement no longer leaks or smells. They are so professional and reliable. We had a sump pump installed and something happened with the pipe internally that was causing a leak. I contacted Gemil outside of regular hours and his customer service was excellent. He got someone to come almost immediately. Lloyd was able to fix the problem and no damage occurred
Mark Archcat Arcieri
Jul 18, 2020 Report
Hired Nusite to waterproof my house after years of leaks. Brad who came to give the quote was very friendly and knowledgeable and gave me options. The work was done fast. The crew was in and out in a day and a half over a weekend. All the workers were friendly. I would have given a 5 star review, but a couple of things caused a 4. First there was a dependency from what Brad said was to be done to what the foreman thought was to be done. That caused a little stress right off the top, but with calls to the owners that was settled and the quote was honored. I think better communication between office
Catherine Belanger
Jul 11, 2020 Report
The Nusite Team did a great job on our basement waterproofing project. Marco and the team were professional and cordial. They worked with us to manage to soil removal and storage to stage it in a way that would be least disruptive to our neighbours. They were responsive to our requests and worked well to solve arising issues. They left our property very clean and tidy.