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Why Are Gaps In Windows a Big Problem?

April 28, 2023

Windows are crucial to the structural integrity, safety, and energy sustainability of your home. Are you tired of feeling a draft in your home, even when all the windows are closed? Gaps in your windows could be to blame. These small openings may seem insignificant, but they can have a big impact on your comfort and energy bills. In this blog post, we'll explore why gaps in windows are such a problem and how you can prevent them using screening splines. Keep reading to learn more!

How Are Gaps Formed in Windows?

Gaps in windows are a common problem that many homeowners face. These gaps can be caused by a number of factors, such as wear and tear over time, poor installation, or changes in temperature and humidity.
One of the main causes of gaps in windows is settling. When your home settles, it can cause the window frames to shift slightly out of place, creating small gaps around the edges. This shifting can also occur if there are large fluctuations in temperature and humidity. Another factor that can contribute to gap formation is poor installation. If the windows were not installed correctly or with enough insulation material around them, they may not fit properly into their frames which leads to small openings between the glass and frame.
Age plays a role too - older homes tend to have more issues with window gaps due to

How to Prevent Gaps in Windows Using Screening Splines?


  • One of the best ways to prevent gaps in your windows is by using screening splines. Screening splines are small strips made from rubber or vinyl that help to keep window screens securely in place, preventing any gaps from forming between the screen and the frame.

  • To install splines, you will first need to remove the window screen from its frame. Next, you will need to carefully insert the spline into a groove along the edge of the screen frame, making sure that it fits snugly into place.

  • Once you have inserted all of the splines around the edges of your screen, simply reattach it back onto your window frame. You should now have a secure and tight-fitting window screen that effectively prevents any drafts or insects from entering your home.

  • In addition to preventing gaps in your windows, using splines can also improve your home's energy efficiency by reducing air leaks and helping to maintain a consistent indoor temperature. So if you want to save money on utility bills while keeping out unwanted pests and drafts, consider installing screening splines on all of your windows today!


Gaps in windows are a significant problem that can have severe consequences for your home's energy efficiency, indoor air quality, and security. Fortunately, screening splines provide an effective solution to prevent these gaps from forming and keep your windows sealed tightly. By using high-quality splines made of durable materials, you can ensure that your window screens remain firmly attached to the frame without any gaps. You can rely on us at Alcot Plastics Ltd. for sourcing foam screening splines of the highest quality. We have been the leading manufacturer and supplier of polyethylene foam products for decades. Contact us today to learn about everything we can do for you.