Why and How of Exterior Basement Waterproofing Toronto

Toronto is the largest and arguably one of the most beautiful cities in Canada. The city is renowned by tourists and historians for its breathtaking skyline and its eclectic districts, with some homes in older neighbourhoods such as Cabbagetown and Rosedale dating back to the mid-1800s. The homes are quite expensive but also a joy to raise a family in, however, they require serious attention.

Toronto and surrounding communities are prone to flooding due to the geography of the land. Rain and melting snow regularly flood basements, which leads to mold issues and destroys the home’s foundation.

Basement waterproofing was not efficient at the time these heritage homes were built. In fact, homes built just 50 years ago are equally prone to floods due to unqualified contractors. The quality of waterproofing techniques has developed significantly since then, and companies like City Wide Group are ready to undo the mishandling of past contractors.

Exterior Basement Waterproofing Toronto

Common causes of wet basements

  • Rains and snow melting produce significant amount of groundwater that converge on its way to the home’s foundation and exerts hydrostatic pressure that leads to cracks.
  • When the water pressure is too low to produce cracks, but the house is built in a low-lying area, and water has no escape, which results in high levels of moisture, and the growth of the mould
  • Improper external drainage system construction, inadequate grading around the house (pointing towards the house), poor gutter and downspouts construction or maintenance are the most common reasons.

How exterior waterproofing is done

Exterior basement waterproofing in Toronto is considered to be the most expensive, but permanent solution to flood prevention.

The process involves digging into the ground around the house which can expose external foundation walls and identify any existing structural damage. Any foundation cracks are then sealed.

Now it’s time to waterproof. A weeping tile is installed around the exterior walls to provide adequate drainage system and divert the running water away from the house. Walls are covered with rubber Bituthene primer and a rubber Bituthene membrane. Waterproofing companies in Toronto like City Wide Group are actually installing additional layer of outside protection – dimpled sheet of drainage membrane (Delta MS).

Part of the exterior waterproofing solutions is to fix all other leaking sources, such as poorly insulated basement windows and building of a proper window wells.

The next important step external waterproofing is the material used for backfill and proper soil grading so it points opposite direction from your house. The quality of backfill plays important role in waterproofing. That is why City Wide Group is not only doing a great job, but also offer a lifetime fully-transferable warranty.

Why to choose exterior basement waterproofing vs. interior

Exterior basement waterproofing solves most of the issues that cause a basement to flood. After that is handled, minor solutions can be applied at much lower cost and higher efficacy. DIY remedies or only using interior waterproofing solutions will not provide sustainable protection.

Exterior waterproofing will not only save your valuables, but also protect the structural integrity of your home and prevent more expensive repairs in the future. These property upgrades will significantly increase the value of your home as well as decrease the cost of insurance. Also, if basement floods are caused by the uneven soil, contractors can level the land to ensure the problem does not reoccur.

Every situation is unique and requires a custom approach. During the initial consultation and estimate, a City Wide Group representative will explain all your interior and exterior waterproofing options and the processes used.