Compromised Seals on Windows
It is common to find compromised seals on windows during inspections. Especially on south facing and west facing windows, as they experience a lot of expansion and contraction due to temperature fluctuations. The following are common causes of compromised seals:
- Temperature Fluctuations
- Extreme Weather (e.g. high winds)
- Improper Installation
Double Paned Windows
A compromised seal only occurs on windows with multiple panes. There are typically two panes of glass separated by a spacer. The space in between the panes is often filled with an inert gas such as Argon. This inert gas acts as an insulator. If the seal becomes compromised this gas escapes letting in air and vapor.
When a seal becomes compromised it typically presents itself in several ways:
- Pushed out gaskets (picture above)
- Condensation or calcification from condensation (picture below)
What To Do?
The main implications of a compromised seal are environmental and cosmetic. The environmental aspect means your home will be less efficient from a heating and cooling perspective. This is because the insulating gas is gone and you could experience drafts. The cosmetic issue is you might see condensation, or calcification may obscure your view.
This is not a do it yourself fix. You will want to hire a window contractor to evaluate. They may suggest one of the following:
- Replace the window.
- Remove the window frame, send it to the factory for repairs. This will include cleaning and resealing with the inert gas.
- The window contractor can also remove one pane clean the inside and put the pane back with a new seal. However, this doesn’t replace the inert gas, so you will not regain the environmental efficiency.
You can schedule your home inspection with Tanque Verde Home Inspections by calling us at 520-462-8844 or you can easily schedule online at this link.
