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3 Signs You Should Replace Your Foam Screening Splines

December 10, 2021

Foam screening splines are essential for the effective installation of windows. They do an excellent job of holding window screens to their frame without leaving any gaps. If you do not use screening splines or use inferior quality ones, you will end up with gaps between the window screen and the window frame. These gaps can prove to be costly in the long run as you will end up paying more for utilities due to poor insulation.

Common materials used for making screening splines

There are several options when it comes to choosing splines for windows. Let's take a look at some of the most commonly used materials.

  • Vinyl
  • Aluminum
  • EPDM (Ethylene Propylene Diene Monomer)
  • Foam 

Foam screening spline is widely used due to its several advantages like:

  • Durability
  • Resistance to expansion
  • Resistance to shrinking
  • Cost-effective
  • Flexible
  • Customizable

A good quality foam spline from trusted manufacturers like Alcot Plastics offers durability. However, due to several factors, sometimes even the best screening splines need to be replaced. Let's discuss clear signs that indicate it is time to replace your foam window splines.

Visible gaps 


If you notice visible gaps or holes between your window frame and the screen, this could be because of damaged foam splines. Changing the old screen spline with a new one is highly recommended during such situations.

In use for more than a decade

If it has been more than a decade since the installation of foam screening splines then they should be replaced. Due to constant exposure to harsh weather conditions for years, the insulation capability of screening splines can be affected. 



Breakages in your window screening spline are one of the clear signs that it is time to replace them with newer ones. A broken or ripped foam screening spline cannot hold together the window frame and the screen effectively without leaving gaps.

For the best quality foam screening spline, you can depend on Alcot Plastics. We are also the trusted manufacturers of pool noodles and backer rods. Contact us now to learn about our wide range of products.