November 11, 2024 · By Mesko Glass Company
Some signs that glass needs replacing are obvious: a visible crack, a chip that's spreading, or glass that's been broken outright. Others are easier to miss.
Fogging or a hazy film BETWEEN two panes of an insulated window (not on the surface, but trapped inside the unit) usually means the seal has failed and moist air has gotten in. Once that happens, cleaning the outside of the glass won't fix it; the insulating glass unit itself needs to be replaced.
A window or door that feels drafty even when it's fully closed, or that has visibly cloudy or discolored glass, is also worth a second look. So is glass that rattles in its frame. That's often a sign the seal around the pane has loosened, not necessarily the glass itself.
Insulating glass units we install carry a 10-year manufacturer's warranty against seal failure from the date of installation, and we track it for you in our own system, so there's nothing to register. If a seal fails within that period, we provide the replacement unit; an installation service fee applies.
Once you know it's time, lead times typically run about a week for annealed glass and two weeks for tempered glass, though supplier availability and the season can shift either. Tempered glass can't be cut or altered once it's tempered, so measurements matter before an order goes in. We'll help you get them right.