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What Is Causing Water To Leak Into My Basement?

Unfortunately, there are several reasons you may find water leaking into your basement and you should treat them all seriously as the problem will need to be rectified sooner rather than later.  Here in Toronto, we have the perfect mix of older homes and extreme weather conditions, which can cause a foundation to leak over time.  Since real estate is at a premium in Toronto, many homeowners would love to finish their basement to increase their living space without expanding into their already cramped backyards or going through the red-tape of adding an addition to their home.

We’ll take a look at the most common causes of a leaky basement and what can be done about them.

Top of the foundation wall

Top foundation leak Toronto
Water can often find its way into the basement over the top of the basement/foundation wall if rainwater happens to drain towards the home instead of away from it. This is common in older homes with a poor drainage design. Be sure your gutter system works well and the downspouts are long enough to lead the water away from the house. In some instances, the soil will settle near a home and this results in low spots where water can seep through and into the basement.

Leaking window wells

Window Well repairs Toronto
Window wells are decorative as well as practical as they’re designed to keep water and soil away from your ground level and basement windows. They can drain rain and ground water away when needed, but can sometimes fail to do the job properly. Window wells can sometimes fill with rainwater if your gutters are obstructed as the water will overflow from the roof. Be sure the windows and window wells are properly installed and the gutters are clear. The window wells should have a drainage system of their own which works hand in hand with the foundation drain.

Cracks in the basement wall

Cracks in Foundation Walls
Basement wall cracks can be serious as you need to find out why the wall cracked in the first place. A band-aid solution isn’t recommended as further cracks may appear. Wall cracks are often caused by pressure which has built up at the bottom of the wall. Water can then be pushed through existing cracks and into the basement or it could create new cracks.

Tie rod leaks

Leaking Tie Rods Basement
Many older homes have steel rods placed in them during construction. When the walls have been built the rods are typically removed, but small holes are left behind.

Leaky sewer pipe

Leaking sewar lines Toornto
Some sewer pipe leaks can be very slow and may be hard to detect unless you see a stain on the wall or ceiling below the drain. In some cases, you may also see mold below the drain.

Leaking mortar joints

Mortor joint leaks foundations Toronto
Some basement walls are made of wood, brick, cinder block or stone instead of concrete. These walls use mortar to hold the blocks in place and the mortar may eventually deteriorate over the years. If this happens, water can slowly leak through it.

Cracks in the floor

leaking basement floor Toronto
The weight of ground water can cause hydrostatic pressure and this can lead to cracks in your basement floor as well as structural damage. The hydrostatic pressure is a result of poor drainage as well as soil, clay and the pressure can push against your foundation. The water needs somewhere to go and can lead to cracks in the floor. The pressure builds as more water collects and becomes heavier.

Sump pumps

Leaking broken sump pump Toronto
If you depend on a sump pump be aware that these devices may fail due to things such as power failures, bad switches, improper installation, lack of maintenance and clogged or even frozen lines. This can be a problem if you don’t have a backup pump.

Clogged floor drain

basement Floor drain leak Toronto
A floor drain can clog and water can back up through the homes’ drainage system. If your local municipal drain is clogged you don’t really have any control over it and that’s why a waterproofing system in recommended.

Obstructed drain tile

blocked weeping tile Toronto
Weeping drain tiles go around the perimeter of a basement in many newer homes. It’s generally constructed with plastic piping which is perforated and then wrapped in a sock-type of cloth. It’s surrounded by gravel and installed placed at the base of the home’s foundation walls. However, it can sometimes be obstructed by tree roots even though precautions are taking against it.

What’s causing your basement leak?

These are some ways a basement can leak and if the problem isn’t solved it can lead to major damage. A proper drainage system is needed to help fight off basement leaks and this is sometimes a simple solution and at other times it can be a big task. Nusite Waterproofing has been providing basement waterproofing and foundation repairs services in Toronto for over 30 years.  We offer a free in-home written estimate and inspection.  Contact us today to schedule you estimate.

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Customer Testimonials

Interested in working with us? Check out some of our customer testimonials below and find more on Homestars. We are one of the highest rated basement waterproofing companies in Toronto

Mark Lipton - Homestars Review

Basement Waterproofing

Our basement leaked! Of course . . . we bought a 100 year old house! But my office needed to be in the basement permanently. I interviewed 10 different companies until we decided on the Steinbergs and their crew at Nu-Site! They are professional, reliable, courteous, honest, and they really make an effort to communicate with the client about every step of the process.

Sara Jack - Homestars Review

Foundation and Waterproofing Repairs

After several years of chronic leaks, we decided to have our basement waterproofed once and for all. The team over at Nusite was professional, answered my questions during the project and stayed within their quoted price....which is always a concern for me when working with contractors. Great job overall

Joshua Persaud - Yellowpages Review

Basement Waterproofing

Had several cracks in my basement wall and they would leak whenever we had a heavy rain. It started about a year and a half ago and seems to have gotten worse over the past 6 months. I tried having my neighbor seal it, but it started leaking again within a few weeks. Called several waterproofing companies and got several quotes. Finally went with Nusite contractors for the job. They gave a reasonable quote and I liked the guy that came by for the estimate. They stayed within budget and cleaned up before they left. It's been almost 3 months now and it seems to be working great.