Window was not installed properly. Fitted to tight.
There must be a space for the area surrounding the window frame to allow expansion and contraction.
Observation: Vinyl windows.
Cracks.
Recommend refer to a licensed window/door installation and service repair contractor for replacement.
Thanks, some things to consider.
Welp, I’ll have to leave it up to you to determine what is normal in your area. I am in a much colder region being in MN but you guys in Colorado have a wider temp swing day to day typically.
When we go sub arctic in MN it is for a week or so, where as in Colorado it is for a day or less typically. In other words, it might be 10 below before sunrise but it gets up to 35+ in the afternoon sun. That can cause a lot of stress to building materials in your area obviously.
That’s what I first thought of.
Cracks, cracks…I don’t know why everyone is so concerned about cracks…I’ve had a crack in my a$$ for 63 years and it never hurt me none…
The window is in the sun.
Consider the expansion differential of the window…
I got caught up in a window argument late last year so now I’m skittish about them. (Dirty windows at the inspection but fogged once the weather turned cold) Anyway- Since windows are so expensive and people are weird about them I’d mention it in a manner that at least identifies the frame failure. As long as there are no symptoms (did the crack extend to the exterior?) I’d also point that out and steer my comment towards it being a cosmetic matter. If the windows are all old-ish I’d instruct to monitor the condition for any change or new symptoms. Repair or replace if necessary.
Have a suspect window, put ice cube on the window. If the condensation does not wipe off, it’s inside the window…
Great idea…but…now I have to carry ice cubes in my tool box?..
I have had success using well shaken [cleaning duster] (cleaning duster can - Google Search) on potentially seal broken windows…YMMV

