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Posted on Oct 03, 2019 by Sam Heer

4 Key Aspects of Code Compliance for Windows

Whether you have a bay window or a casement unit, your windows have to be code-compliant, meeting standards in place to keep you safe. The key aspects every code-compliant window has to address include:

  1. Energy Conservation – Windows have to suit energy codes, meeting U-factor and solar heat gain coefficient ratings ideal for a certain location. 

  1. Safety Glazing – If a window is situated in one of the seven locations identified as hazardous by the IRC, it has to be safely glazed with security film or tempered glass.

  1. Fall Protection – An operable window with a sill height below 24 inches above the floor is required to be no more than six feet above the grate outside the window to protect children from severe injury after falling through double-hung windows with low sills.

  1. Emergency Escape and Rescue – In 2015, the IRC stated that window sills cannot be more than 44 inches high from the floor and windows must open no less than 24 inches high or 20 inches wide. 

How Code Compliance Affects Your Window Choices

Complying with code requirements can limit your window choices because window styles and materials can affect what you can get. For example, vinyl windows have thicker frames so using them results in smaller openings. Unfortunately, this can be problematic where egress requirements have to be met. As a compromise, a window style that has a bigger opening by design can be chosen, like swapping sliding windows for casements. However, this can also be at odds with homeowner associations, for example, that call for matching windows in their neighborhood.

Renewal by Andersen® of Central Illinois carries a wide range of replacement windows. With each unit designed to be of high quality, you simply can’t go wrong with choosing one in our lineup. To learn more about what we can do for you, simply give us a call at (866) 693-6707 or fill out our contact form. Schedule a FREE consultation with us today! We serve Bloomington, Champaign, Galesburg and the surrounding IL communities.


"I would recommend RBA of Central Illinois for QUALITY windows and doors. Compared to our old cheap, thin vinyl windows, Andersen blows them away. You can easily tell by how well the sliding doors fit and close, and how heavy duty they are. We also cannot hear the wind rushing through the house in inclement weather anymore! And the black window frames we went with are amazing to look at. Aaron, Al, Darrell, and Cory all were professional and went all out to finish the job, given the weather they had to deal with. I would definitely recommend. They were also on top of communicating with me given the weather delays, and what I could expect for them coming out. Five stars!"

Eric L.

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