Why is there a gap between the frame and the astragal bar? - Quickslide Windows & Doors

Why is there a gap between the frame and the astragal bar?

Share this story!

Share this post to any popular social media, email it to a friend or print it off.


There should be a gap between the astragal bar and frame to allow for movement. If there was no gap, the bar would just pop off. PVCu or UPVC expands in heat and by including a gap we’ve made room for any potential expansion you may see during hot summer months. The PVCu will turn to its original form when it cools down.

Required gap: 0.8mm | Tolerance: +/- 0.1mm

© 2022 Quickslide. All Rights Reserved.

Privacy Policy || Cookie Policy || Consumer Terms & Conditions || Trade Terms & Conditions

Get a Price Find an Installer