A double-glazed window with a cracked inner pane can be a bit of a challenge. Here are some possible causes and potential solutions:
Your window frame expands and contracts at a different rate than the glass. If the installer used too little glazing tape or overtightened the retaining beads, the frame pinches the IGU. Over a few seasons of expansion, the inner pane, which has less flexibility than the outer (being further from the external buffer), gives way. double glazed window cracked inside
You can’t stop nickel sulfide inclusions, but you can reduce thermal stress: A double-glazed window with a cracked inner pane
Sometimes a tiny imperfection or nick in the glass edge during manufacturing creates a weak point that finally gives way months or years later. Over a few seasons of expansion, the inner
Here is everything you need to know about why this happens, whether it’s dangerous, and how to fix it. 1. Why Did My Inner Window Pane Crack?