Inspecting Window Seals
Many newer windows have more than one pane of glass. The area between each pane is either airtight or filled with an insulating gas thus creating a temperature barrier. If the seal around the pane is €œbroken€ it can allow air and/or moisture to enter and reduces the thermal efficiency of the window. Replacing the seal is a job for a professional window glass contractor; however, a homeowner can perform a quick window seal inspection a few times a year as follow:
- Carefully inspect each window visually for the presence of condensation or water spots between the panes. Windows with broken seals often appear foggy.
- On a cold day, touch the outside of each windowpane. If any of the panes feel warmer than the others, it maybe allowing heat to exit the home through a failing seal. Look closely for distorted or damaged neoprene (the synthetic material resembling rubber )around the edges of the pane.
As necessary, have a professional home inspector provide a second opinion before buying a replacement pane or window. Most units will require removal and replacement instead of permitting for an on-site repair.