Inspected a 13 year old house today. There appeared to be “bubbles” on the rubber seal between the thermopane windows in many areas. Anyone see anything like this before?
The bubbles appeared to be more prominent on the bottoms and sides of the windows where the sun was more likely to hit. Tops and sides in shade didn’t appear to have the bubbles. It seems as if the rubber was bubbling from overheating.
I didn’t see any indications that the window seals were actually compromised, no fogging or condensation, etc., but my client was concerned that there is a potential problem in the making.
By the way, I couldn’t find any manufacturer’s name on the windows.