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About Clarke Basement Systems

Professional Basement Waterproofing Company

Accreditations and Affiliations

Recent Testimonials
  • "After living in her home for 25 years, this year my Mum got a bit of water in her basement which freaked her..." Read Full Testimonial

    Ramona S. of Burlington, ON

    Customer Testimonial

              After living in her home for 25 years, this year my Mum got a bit of water in her basement which freaked her out and upset her greatly. After doing research I decided to call 2 companies to obtain 2 estimates to get this situation taken care of for her. Mum is 86!! The first company, really, did not even want to take the time to even talk to me, or come out to her home! He said I will email you some information (which he never did). Sigh. My next call was to Clarke Basement Systems and what a breath of fresh air it was. From the service, to reception, to the Sales Person to our OUTSTANDING CREW, which was headed by ROB .... we were treated so well. Many calls to confirm, to reschedule due to a storm and follow up. Mum and I are thrilled and really really want to comment and THANK ROB and his team for their hard word, respectfulness of Mum's home and doing a fine job. When they were leaving a neighbour came out and he will be calling for an appointment too. You can tell Rob LOVES his work, what a funny guy and so knowledgeable. Thanks again. GO ROB!!!!!
    Ramona S.
    Burlington, ON
  • "Great Team, Great Job Overall!" Read Full Testimonial

    Barb D. of Milton, ON

    Customer Testimonial

              i want to thank Matt for coming by and fixing those little holes in our new crawlspace floor covering before they became big holes. I also appreciate the roll of tape he left so we can catch other little tears and holes in the coming years before they too become larger problems. Still love going down there and NOT smelling the earthy damp smell which we used to experience! THANKS!
    Barb D.
    Milton, ON
  • "Every time I contacted Clarke Basement, they were on time and returned any calls promptly, and if i had any..." Read Full Testimonial

    Scott F. of Missisauga, ON

    Customer Testimonial

              Every time I contacted Clarke Basement, they were on time and returned any calls promptly, and if i had any questions they answered the questions personally. I believe the job was done very professionally and the two installers had no problem with me watching them doing the work and answered any question I had. I'd recommend Clark Basement Systems to almost anyone!
    Scott F.
    Missisauga, ON
  • "Arrived right on time & as scheduled!" Read Full Testimonial

    Scott F. of Mississauga, ON

    Customer Testimonial

              The guys (Shane and Luke) we great. They arrived right on time as scheduled and took great care not to damage the grass and lawn any more than was necessary, (can't dig through a flower bed without some damage). Hard workers and friendly, they didn't mind me watching as they worked. I would not hesitate to recommend your company to anyone with a similar problem.
    Scott F.
    Mississauga, ON
  • "We had a great experience with Clarke Basement Systems. They were extremely knowledgeable. They were really..." Read Full Testimonial

    Joni of Toronto, ON

    Customer Testimonial

              We had a small leak in our basement window and when we opened up the dry wall to find out the source of the leak we found that there was a bunch of mold behind the drywall and as we took off more and more drywall we found more and more mold. And we have small children so obviously this was a big concern for us. So we ended up taking off all the drywall in our basement and in the process we found that the basement had leaks all over our basement. Originally, we thought we would have to do some sort of outside drainage system. But we were refrred to Clarke and Clarke was able to offer a system from the inside of our basement that would essentially tell the water that we're not going to try to keep you out - if you have to come in, then come in but were going to channel that water where we can bring it to a sump pump and pump it out of our house and keep out basement 100% dry. We had a great experience with Clarke Basement Systems. They were extremeley knowledgeable. They were really professional. I love their confidence. I'd ask them questions like ' if we ever have water down the road..' and their answer would be: 'You're not going to have water down the road'. And I just loved that there was any sense of doubt. They knew their system worked. They were very professional. They explained everything very very clearly and they started the job exactly when they said they would start, they finished when they said they would finish it. They cleaned up every day. They were friendly. They were kind to my kids and they were really a pleasure to work with. I would absolutely recommend Clarke to my friends. It's amazing because I told my friends when we first came to this house there was kind of an off smell to the basement. We just sort of thought this is how basements are - they're damp, they have funny smells, they're not like the rest of the house. Now that they've been down there and they've done their work, our basement is dry as a bone. It smells like a regular room in our house and we feel completely confident that we're not going to have any water and we can go back to living our lives and enjoying the space again.
    Toronto, ON
  • "Elizabeth from Toronto called on Clarke Basement Systems for help with her wet basement." Read Full Testimonial

    Elizabeth of Toronto, ON

    Customer Testimonial

              Elizabeth from Toronto called on Clarke Basement Systems for help with her wet basement. From the initial proposal and assessment and throughout the entire process, our specialists explained all the repairs and provided literature to explain all the work that needed to be done. They got the job done quickly and efficiently so that the family could enjoy their dry space in no time!
    Toronto, ON
  • "We would like to let you know that your company present high standard of business practices. From..." Read Full Testimonial

    Theresa of Toronto , ON

    Customer Testimonial

              We would like to let you know that your company present high standard of business practices. From receptionist to professional visiting (Ron Monk in our case). All are helpful ,friendly and with an extra human touch which we really appreciated. Your info. packages sent prior to the schedule visit is of helpful ,so people can ask relevant questions. Ron was punctual, had called to confirm appointment time prior to the visit. He was courteous knowledgeable and professional through out the visit, paying attention to minor details. He was patient and friendly in explaining /answering questions. He was able to pin point the problem source in timely fashion. All in all,Ron's visit,the whole dealing with your company are pleasant and impressive.
    Toronto , ON
  • "Class Act!" Read Full Testimonial

    Robin F. of Toronto, ON

    Customer Testimonial

              Thank you Clarke Basement Systems for sending someone by to fix up the pipe problem!! Most appreciated. We hope to call you at some point soon to waterproof the whole basement and redo the floors! You guys are a class act. Thanks!
    Robin F.
    Toronto, ON
  • "First Maintenance!" Read Full Testimonial

    Adam R. of Toronto, ON

    Customer Testimonial

              This was our first Annual Maintenance since installing a complete waterproofing system and TripleSafe sump pump from Clarke Basement Systems. Ali was great... explained everything, and provided some helpful tips and advice on keeping the system operating efficiently. We've been very satisfied with Clarke Basement Systems from initial installation to ongoing service!
    Adam R.
    Toronto, ON
  • "I thought you did a fabulous job. I was so happy. I called, the salesman came right away. I said how long..." Read Full Testimonial

    Debbie of Toronto, ON

    Customer Testimonial

              Debbie, a customer from Toronto, offers her feedback about the great experience she had with Clarke Basement Systems. She was impressed with how quickly they could do the work (the installers came the following week), and how clean the installers left the area. There was no mess, and they left a very clean installation of drywall. She had a TripleSump installed with a triple battery back up to solve her water problems. She says the instructions were easy to understand and everything was explained to her in detail. Another satisfied customer from Clarke Basement Systems!
    Toronto, ON

Clarke Basement Systems is your local Basement Systems® dealer in the Ontario area. We serve Mississauga, Toronto, Markham and many outlying areas, including Vaughan, Peterborough, Brampton, Barrie, Oshawa, Richmond Hill and nearby. See our full service area.

As basement waterproofers, foundation repair, concrete leveling, and crawl space repair experts, we are locally owned and operated contractors who have been in business since 2003.

A certified Basement Systems® dealer, we have exclusive access to a wide variety of waterproofing products that have been used in over 200,000 basements since 1987.

Each of our products includes a written, transferable warranty and the backing of an international network that's dedicated to keeping basements and crawl spaces dry all the time!

About the Owner

Owner of Clarke Basement Systems

Don Clarke

For over 20 years Don has been a leader in the construction industry. He is responsible for the strategic vision and leadership for both Clarke Basement Systems and Foundation Supportworks of Ontario.

Serving the greater Toronto area, Clarke Basement Systems specializes in crawl space repair, foundation repair, concrete lifting, and basement waterproofing in Ontario. Locally owned and operated, they are part of a national network of waterproofing experts offering high quality and up-to-date products.

Meet Our Team

Free Waterproofing and Repair Quotes

At Clarke Basement Systems, we offer free, no-obligation waterproofing quotes to homeowners within our service area.

During your Free Estimate, our waterproofing specialist can answer any questions you may have about your wet basement or crawl space.

Our free quotes include all of the following:

Our 88-Page Waterproofing Book: Before we meet with you, we'll send along a copy of one of our 88-page crawl space and basement waterproofing books.

This book features our full selection of products, while explaining why basements leak -- and what we can do to permanently solve your problem.

A Personal, On-Site Inspection: Your waterproofing or foundation specialist will inspect your basement or crawl space to identify sources of flooding and moisture and explain the problem in depth.

Your Complete Waterproofing System Design: Our waterproofing specialist will measure your basement's dimensions and identify the best spot to place the sump pump and run your discharge line. You select which of our products you'd like in your home, and we make a plan together.

Our FREE Written Quote: We provide our customers with a free, no-obligation written quote at the end of each visit. Our prices are firm -- there will be no hidden expenses later on, and there will be no high-pressure sales techniques.


We Solve All Your Basement Crawl Space,  and Foundation Problems 

We'd like to show you how we can help you waterproof your basementcontrol moisture in your crawl space, or fix a failing foundation. We have the experience, equipment, and best practices you need to ensure a dry basement and structural integrity.  

For a free waterproofing, or foundation repair quote, call or-email us today!

Looking for a price? Get a no cost, no obligation free estimate.

our service area

We serve Ashburn and the nearby area

Our Locations:

Clarke Basement Systems
10638 Ninth Line
Markham, ON L6B1A8