We can’t tell you how frequently we hear “my basement has never leaked before” from customers in the Toronto area. Of course they want to know why it would be leaking now and many hope that perhaps their leak is a one-time occurrence. If there is one thing we know, it’s that if your home has leaked once and has not been repaired by waterproofing, then you will surely suffer another wet basement.

All basements’ will leak without waterproofing

Over the years, we have learned that all basements will leak eventually, this observation is reinforced by the insurance industry which doesn’t protect homeowners from a leak caused by foundation cracks; insurance companies simply won’t take a risk on covering losses they know are impending.

A variety of factors can contribute to causing a basement leak:

  • Plugged exterior drainage tiles or the absence of these completely
  • Property grading
  • High water tables or heavy rains
  • Cracks from settling or construction
  • City Wide Group waterproofing professionals can assess the factors present that make your home vulnerable and explain the nature of the issue and our proposed solution.


Understanding Your Wet Basement

Two principles of water:

  • Water will always flow to the lowest point and build up, which increases pressure.
  • Water will always follow the path of least resistance.

When you pour water from one object (a pitcher, etc.) to another (a glass, etc.), it fills from the bottom, the lowest point where it meets resistance, then to the top. The same is true with your basement. Groundwater or rainfall and melting snow flows then accumulates at the bottom of the original hole dug on the property – your foundation. The backfilled ground around your home is less compact than the undisturbed surrounding land and the water will find its way to the lowest point. There, the water builds up filling the available space. If your basement is unfinished, you can actually chart the height that the water has reached in the past by examining the efflorescence and water marks visible on the walls.

Builders use various methods to carry the accumulated water away, with the most common method –a weeping tile system. Weeping tiles work extremely well, until silt, tree roots, etc. clog them. A clog blocks the water from flowing away from your home and starts to build up pressure.

Then there’s the second principle: Water always follows the path of least resistance. For example, you’re at the beach building a sandcastle with a moat, it is then fills in with seawater. However, the water will ultimately break through a point of weakness in your wall. This is why you must continuously rebuild and reinforce your walls because the water always finds the path it has travelled before. That’s the case with your wet leaky basement. Deterioration at the floor-wall joint, cracks in concrete or block walls, or poorly plugged tie rod holes for example can all provide easy, unrestricted access for water.

To permanently prevent against a wet basement, call City Wide Group today at 416.283.5500 or contact us for a free estimate.

Share This Information About The City Wide Group Inc.


The City Wide Group prides itself on superior quality, adhering to the philosophy of doing things correctly from the outset and striving for unmatched customer contentment. Our assurance in our craftsmanship and wealth of experience makes us the only company in Toronto & the GTA to offer a real LIFETIME WARRANTY. Opt for The City Wide Group for foundation waterproofing, and we promise your treated area will remain free from water or moisture entry for as long as your house stands. Our services come with a warranty certificate that is transferable to endless future homeowners.

  • Before any digging gets underway, The City Wide Group ensures all utility services are informed and the dig site is clearly marked.

  • We first reveal the foundation’s walls and base, giving them a good clean to guarantee that the new concrete will bond well.

  • To deal with any cracks or openings in the foundation, we fill them with a specific type of cement before applying a fresh concrete layer over the entire area.

  • We then secure the foundation with a RUBBER BITUTHANE MEMBRANE for waterproofing, covering both the wall and its base.

  • Additionally, we attach a DELTA MS plastic mat along the foundation wall down to the base, aiding in water drainage.

  • New weeping tiles are installed to divert water from the foundation, surrounded by clean ¾” gravel to ensure proper drainage.

  • The dug-out soil is then replaced and compacted firmly to avoid any future ground movement.

  • After the work is finished, we thoroughly clean the site of any construction debris.

  • To wrap up, we repair and reinstate any outdoor spaces and landscaping that were affected by our work.




Whether you have an actual water leak or evidence of water seeping through the walls, contact City Wide Group for a free estimate about how to waterproofing your basement.

Please complete this form and we will call you back to arrange an appointment for a Free Estimate.






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