Skip to Main Content

Leaking Basement Windows

Do you have leaking basement windows? Don't panic. Learn why this happens, how to solve this problem, and how Groundworks helps.

Schedule Inspection
A Groundworks worker inspecting a basement.
leaking basement windows that has caused mold and other damage in basement

Alberta homeowners often underestimate the problem of leaking basement windows. This issue is more than a mere nuisance—it can cause severe water damage to your property and compromise your foundation. Ignoring leaking windows might worsen the situation and result in expensive repair bills.

Unlike store-bought sealants and other traditional methods, Groundworks’ basement waterproofing solutions address the symptoms of leaking windows, such as mold and musty smells. We tackle the underlying causes of the problem like inadequate drainage, expansive soils, and climate variations in the Alberta region. Learn more below.

Does your basement windows leak?
Book your appointment today.

What Are Leaking Basement Windows?

Basement windows that allow water to enter your home can lead to various issues, such as damaged belongings and pest infestations.

Problem signs associated with leaking basement windows include:

  • Visible dampness 
  • Staining from water 
  • Puddles around window frames

You might also notice the following in your basement:

  • Damp walls
standing water in a basement show signs of leaking basement windows
cement block wall with mold indicating leaking basement windows.

Whatever the reason for leaking windows, taking swift action prevents more serious concerns, such as structural damage.

Can You Fix Your Leaking Basement Windows?

Yes, you can repair the leaking windows in your basement. However, you need a solution that goes far beyond a quick fix. Applying waterproofing paint or fresh caulk to windows provides temporary relief but won’t identify the underlying problem that caused leakage in the first place.

Groundworks’ basement waterproofing service eliminates the problem signs of leaking windows and prevents this issue from happening again.

What Causes Leaking Basement Windows?

Leaking windows in your basement might be the result of:

  • Aging: Over time, windows weaken, experience wear and tear, and become more prone to leaks.
  • Damage: Wood, metal, vinyl, and other materials might degrade and decay, increasing the chances of leaks.
  • Poor Installation: Improperly fitted windows cause openings that allow water to enter your basement.
  • Inadequate Drainage: Poor drainage around basement window wells often leads to water accumulation and leaks. 
  • Environmental Pressure: Expansive clay soil, common in Alberta, can create hydrostatic pressure against basement walls, resulting in leaks.
  • Climate Conditions: Extreme weather, like heavy rain or snow, could worsen leaks.

Identifying the cause of leaking windows requires a professional assessment. Groundworks provides free inspections, helping you get to the bottom of this problem.

How We Fix Leaking Windows in Your Basement

First, we’ll assess your basement to determine the source of your leak and then determine the best repair solution. Our team uses the following technologies for even more effective results:

Groundworks tech inspecting basement to identify root cause of issue
  • Our interior drain system collects and redirects excess water to a sump pump, relieving hydrostatic pressure. 
  • Our industry-leading sump pump system removes water from your home’s foundation, preventing further damage.
  • Our vapor barriers stop moisture intrusion and maintain a dry basement.
  • Our advanced dehumidifiers ensure optimum humidity levels, restricting mold growth and musty smells.
  • Our steel l-beams and wall anchors curb foundational damage and consequent leaks. 
Groundwork graphic image explaining merger between Polylevel and Groundworks

Why Address Leaking Basement Windows Now?

Fixing leaking basement windows as soon as possible is beneficial for these reasons:

  • Prevent mold development.
  • Reduce energy bills by sealing windows.
  • Maintain the structural integrity of your home by removing moisture from your basement.
  • Safeguard possessions from water damage.
  • Increase the value of your property by creating a safer environment. 

Contact Groundworks for the Ultimate Basement Waterproofing Solution

Groundworks tech smiles as he hold a level getting ready to get to work

Don’t let leaking basement windows cause water damage and structural problems. Our vapor barriers, sump pumps, dehumidifiers, and other waterproofing solutions create a healthier and drier downstairs space.

Contact us for a free inspection and estimate.

Leaking Basement Windows FAQs

The cost of repairs depends on the extent of the damage, the size of your basement, and other factors. We’ll give you a cost estimate during our free inspection. If you can’t pay for repairs outright, we offer financing options to spread the cost.

We don’t recommend it. Store-bought sealants only temporarily repair leaking windows and might even cause more damage in the long run. Professionals like Groundworks will identify the cause of the problem and prevent it from happening again.

The issue could get worse. As window openings get wider, more water can enter your basement, potentially causing significant damage to your foundation.

Do you see any of these signs? Book an appointment now!

Map of Greater Toronto Service Area

Proudly Serving Alberta and Southern Ontario

Canada trusts Groundworks for reliable crawl space, basement waterproofing and foundation repair services. Contact us for a free inspection!  

Top Cities We Serve


  • 5/
  • 5/
  • 5/
  • 5/
  • 5/

Excellent service! Really professional, knows his technology, works efficiently. Obviously enjoys his work. Thanks Feiross!

Brian Keating

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/

Cory came to my house, thoroughly evaluated the situation, explained the options to me, and patiently answered all of my questions. He is amazing. There was a crack in my basement wall that needed to be repaired. Paul (I think) did a good and clean Job. The repair was scheduled and completed exactly as was described to me. Great team! I’d definitely recommend this company to others.

Kavan Motazedi

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/

An amazing company with outstanding service. Incredibly impressed with both the work and the care. We did full waterproofing and a new sump system and we are thrilled. Sanity is restored after crisis flooding! From the initial consult to the final job the excellency is there. Would tell anyone and everyone to use this company.

Bek MacIntosh

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/

The service provided was excellent. From the start when we installed the tester to the end when we got the mitigation system installed. The installers came on time, cleaned up, and was super friendly. Definitely will contact them again for our next house!

Mabel Ma

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/

Excellent service. Sales was pleasant and quote was thorough enough to proceed. The crew that came out to excavate, and install the interior and exterior basement systems was absolutely top notch – their work was neat and tidy, they showed up on time, and worked hard. To top it off, they (and all the folks involved) have to be the most pleasant contractors I’ve ever dealt with – and this is house #5 for us over the years! Thank you, Basement Authority. Highly recommend.

Laura Chutny

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/

Yesterday we had our sump pump service by Ben and was very pleased with the work. He was knowledgeable and took care in his work. He was very friendly and explained what he was going to do. Very good at his job and we’ll ask for him if we need any work done in the future.

Wayne Bateman

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/

Fantastic service from start to end. Professional sales call, follow up, and terrific work crew on site. Did an amazing job of raising and leveling my driveway. The crew took great pride and were even excited with the outcome. I HIGHLY recommend their work.

Craig