How To Keep Water Out Of Basement Windows

Having a basement with windows can be a wonderful thing. However, having basement windows that frequently leak water can be a very frustrating thing to deal with. If you notice water seeping in through your windows around the seal or even through the panes when it rains a lot, you might have a land grade or sealant issue. So, instead of using another towel to soak up the water that leaked in during yesterday’s heavy rainfall, let’s discuss ways that you can combat water intrusion through your basement windows for good.


Check Your Downspouts


Evaluate the perimeter of your home and locate where your downspouts exit and direct water. If your downspouts are dumping water directly on to or near your basement windows, there’s a good chance that you’re going to have water intrusion around your windows.¬†Overflowing spouts can fill your window wells with water, resulting in window leakage over time.


Window Wells


Inspect window wells to ensure they are installed correctly and that their drains are linked with the foundation drains properly.


Window Well Covers


Obtain window well covers to prevent rainwater from falling into the well area(s) and through your basement windows. Covers usually vary in size and shape. Together with a professional waterproofing company, you can decide which style/design is best for your window. For example, some are more flat while others are relatively large with sloping covers so water can easily drain away from the window during heavy rainfall.



  • Invest in a dehumidifier that will remain running in your basement to deal with moisture and dampness.
  • Observe the soil around your basement windows. Soil naturally settles around your home over time, and slopes downward towards your house. Manipulate the soil to create a slope that drains away from your home, and reposition the soil as frequently as needed to keep it in its proper position. This is known as maintaining proper land grade.
  • Look for any visible cracks in your foundation or around windows where water may be spilling in during heavy rainfall. Use the correct caulk for the job, such as polyurethane caulk for smaller cracks and hydraulic cement for larger cracks. The use of hydraulic cement generally requires an electronic hand-held grinder. Hydraulic cement also expands when damp or wet to create a very tight filling.


If you still have questions about ways that you can actively work to remedy your basement window leaks, give us a call. Furthermore, if you have a job that seems too big to tackle on your own, or if you want to be sure that the problem is addressed and corrected by a professional, give us a call or send us a message. We look forward to serving you soon!

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