• Nusite Contractors Ltd.

How to Prevent Wet Basement in Toronto this Fall


The weatherman is predicting alternating spells of warmer and cooler weather in Toronto this fall, which, may result in abnormal precipitation in Southern Ontario. This means it’s time to start preparing to keep your Toronto basement dry.


What Can I Do to Prevent a Wet Basement?

The main cause of a wet basement is poor water management on the outside of your home. To prevent basement issues, it is very important to maintain an effective surface to manage water run-off. This will stop the moisture from seeping, pooling, and penetrating through your foundation wall. If you can perfect your exterior water management system you will thoroughly improve the lifespan of your home's foundation.

What Causes Leaks in a Basement?

Below is a list of tips that can help keep your basement dry through a wet/ rainy season.

Gutters/ Downspouts:

Many people don’t know that a poor roof and drainpipes can cause a wet basement, so it is important to make sure your gutters are clear and positioned correctly.

A roof is a catchment area that channels rainwater into the gutters, down the drainpipes, and away from the home. If these become blocked or overloaded, they spill over, releasing uncontrolled water near and around your foundation. This may not seem to be a big deal at the moment but over time this poor water management will cause a wet/ flooded basement.


Three Steps to Managing Gutters/ Drainpipes.


1. Determine whether your gutters are deep enough and if there are sufficient downpipe points.

2. Find a service to inspect and keep your gutter/drainpipe system clean. Regularly inspect your gutters for damage or blockage.

3. Ensure that water discharged to the ground is channelled to a location away from the home. This is a key step to preventing wet basements and foundation issues.


Maintain your Garden and Surrounding Areas.


If there’s an area in your garden where the water pools, or where the plants and earth are mouldy, you can bet your bottom dollar that it’s feeding water below ground. This water can easily find its way to your foundation walls and eventually penetrate through its surface, so it is very important to manage it.



We recommend using an open drainage system to prevent pooling from happening. If your property is low-lying, and you’re receiving run-off from a neighbour, you may even need to consider installing a Sump Pump to control the problem.

Leaking Appliances and Pipes.

To check for leaky pipes upstairs, turn off all the taps and monitor the water meter for an hour. Liquid follows gravity downwards and downwards is usually into your basement. If your water meter moved, call in a leak detection expert to help solve the problem.

Underground Issues

Make sure the appliances in your basement are watertight. To help check for this look for mould where pipes penetrate the wall/ floor. If you find evidence of water seepage through the walls, you need to do one of two things:

  • Dig out the basement on the outside and fix the problem properly (Exterior Waterproofing)

  • Install a weeping tile and sump pump system to channel the water away. (Interior Waterproofing)

Remember, interior waterproofing is not waterproofing; it is a water management system.

These jobs both require the services of an experienced waterproofing specialist. Before starting any work, be sure to get a few estimates to determine your best course of action.


Stop-Gap Solutions

If your problem is little more than a damp smell, you may be able to keep it under control for a while by installing a commercial-grade dehumidifier and ventilating with fans. That being said, this is a temporary solution that doesn’t stop water from entering your foundation walls.

Don’t let prices stop you from protecting your home!

Don’t neglect a damp basement, seeping water can cause damage to your foundation walls, reducing the strength of your home. If the price is what is holding you back take a look at the Can I Get a Subsidy to Waterproof My Basement? blog, to see if you are eligible for the Basement Flooding Protection Subsidy program.

About Nusite


Nusite Contractors Ltd. has been proudly serving GTA homeowners for over 30 years! We are a family business and take pride in customer service and professional work. You can contact us here to schedule a free consultation and written estimate! We would be happy to help!


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