Reliable Basement Waterproofing Contractor Serving Markham, Vaughan, Mississauga & Nearby

If your basement is wet, cracked, or smells musty – we can help

As a professional basement waterproofing company with 15+ years of experience, Clarke Basement Systems understands the best solutions for your leaky basement, high moisture or flooding issues. Our employees are known for their superior craftsmanship and have been honored with awards like "Talk of the Town" for their excellent customer service. Call 1-844-225-6185 or click the button below to schedule a FREE basement waterproofing estimate or inspection!

Why Ontario Homeowners Choose Our System:

  • Transferable lifetime dry basement warranty
  • Solutions for finished and unfinished basements
  • No destructive outside excavation
  • More than 30 patented products, all designed specifically for your basement
  • Free estimates on work needed

Signs That Basement Waterproofing is Needed:

Your damp or wet basement can cause more than just a headache; these issues can create bigger problems like mold, mildew, rot, structural damage, and a variety of health problems. If you’ve noticed any of the symptoms below, contact us today!

  • Wet or damp basement floor
  • Leaking basement walls
  • Pooling or standing water
  • Crystalline deposit on concrete surfaces
  • Musty odors
  • Condensation
  • Sump pump issues
  • Leaky basement windows

Recent Testimonials

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“...we are still very happy with our basement system and the we are VERY happy we have it installed before all this rain comes in tonight...”

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Kelly & Peter P. of Priceville, ON

“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”

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Ramona S. of Burlington, ON

“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.”

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Scott F. of Missisauga, ON

“This is the way a company should do business!”

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Gary M. of Mississauga, ON

“Arrived right on time & as scheduled!”

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Scott F. of Mississauga, ON

Our waterproofing solutions have been used over 200,000 times

Our complete basement waterproofing system includes all the solutions you need for a dry, comfortable, odor-free basement; no matter what’s causing your issues. We offer many solutions for your home, including sump pumps, weeping tile and other basement drainage systems, dehumidifiers, crack repairs, vapor barriers, and more.

If you think you have a basement waterproofing problem, request a professional basement inspection today. We will send one of our certified basement waterproofing specialists to visit your home and conduct a thorough inspection of your home’s basement foundation.

We believe you deserve only the best. That’s why we install a patented proven system developed and tested by Basement Systems, Inc. – the leader in “All Things Basementy!” For your peace of mind, our basement waterproofing system comes with a Lifetime Warranty that is transferable when you sell your home. We have a team of extensively trained basement repair specialists in the Greater Toronto area who can work with you to find the best solution for your home’s basement.

Request a free estimate from your local basement expert

Clarke Basement Systems fixes leaky basements in Ontario, in areas like Toronto, Oshawa, Vaughan, Brampton, Barrie, Peterborough, Newmarket, Richmond Hill and neighboring towns and cities. Contact us today for a free wet basement repair estimate.

Other companies might try to sell you on inferior basement waterproofing solutions. Our products have been developed, patented, and perfected by Basement Systems®, Inc. -- the world's largest network of basement waterproofing contractors.

Exterior Excavation

Heavy equipment is brought in to dig out the entire perimeter of the basement. New drain lines are installed, and sometimes a waterproof coating is applied to foundation walls. This waterproofing strategy is expensive and often damages lawn and garden areas. Exterior drains are prone to clogging with silt and roots over time.

Interior Subfloor Drain

This drain line is installed underneath the basement floor, just inside the foundation walls. The hidden drainage system brings water to a sump pit, where a sump pump automatically pumps it outside. Also known as a French Drain, this system is not prone to clogging; it’s reliable and easy to service.

Interior Baseboard System

A hollow plastic baseboard is installed along the base of basement walls to form a drainage channel that directs water to a sump pump system. A baseboard-type drainage system is sometimes recommended when the basement slab is too thin to accommodate a French Drain.

Negative-side Sealant

This waterproofing technique involves "painting" basement walls and floors with a waterproof, cement-based coating that's supposed to seal out moisture. Even when applied correctly, this thin membrane usually fails in response to prolonged hydrostatic pressure from outside the foundation.

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

our service area

We serve the following areas

Our Locations:

Clarke Basement Systems
12045 McCowan Rd
Stouffville, ON L4A 4C3
1-416-800-3177


Clarke Basement Systems
7250 Keele St Store #209
Vaughan, ON L4k 1Z8
1-416-800-1687