Can I Waterproof My Basement in the Winter?


As a homeowner braving yet another Toronto winter, you may be tempted to leave your basement waterproofing to the spring. After all, it snows often in Toronto during the winter and the ground will be frozen for much of it. As a result, property owners will delay waterproofing during this time.


However, waiting until the Springtime to waterproof can be a short-sighted mistake that may permanently damage the foundation of your home. Unfortunately, Toronto has ideal conditions for water leaks: wet weather, ageing home foundations, and even during the winter, we experience sudden bouts of snow melts and above-freezing temperatures that can come without a warning. Without a protected basement, all that water could end up leaking through your home’s foundations and cause major issues upon discovery in the spring.


Canadian winters tend to have a freeze and thaw cycle, causing your house and the ground around your foundation to expand and contract at different magnitudes and rates. This is potentially making the existing cracks larger and opening up joints where water flows through. It is important to know as well, that when the colder weather arrives, ice can jam in your pipes, troughs, downspouts, and on your roof. When your water drainage systems are blocked, the water will have to find a different path. Typically, it flows to the ground directly beside your foundation, which is the most commonplace for foundation leaks.


During the spring season, temperatures will warm up and thaw the ground around your home, contracting and leaving a gap between the ground and your home, allowing water to freely flow through. Groundwater will leak into a weak home foundation if not properly sealed. Although the weather will be warmer, there will still be rain which can lead to flooding in your basement.

It is important to remember that most repairs that are completed year-round can also be completed during the winter: non-structural cracks can be filled, weeping tile drains can be installed, sump pump systems can be mounted or replaced, and crawl spaces can be compressed. These are a few examples of the types of interior waterproofing you can have done over the course of the winter. External maintenance can also be performed if needed, however, it is easier to excavate during the spring and summer seasons.

If you are considering taking on a waterproofing project during the winter months, note that basement waterproofing companies can provide a faster turnaround time as they tend to be more available. If you take the chance to wait until the weather warms and the snow thaws, you may encounter a major leak in your basement. As well, Springtime is our busiest season, and we service all of South Western Ontario and with that in mind, we highly encourage our clients to not wait until then to waterproof their property.

Don’t let spring surprise you with a leaky basement and home foundation damages. Give yourself peace of mind by taking advantage of the winter season and sealing your basement now.


If you live in Toronto or the surrounding GTA, we can provide a free in-home inspection and estimate for any of your interior or exterior waterproofing needs. You can contact us here to get started.


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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