Q:

What causes moisture in double pane windows?

A:

Quick Answer

A failure in the seal of a double-paned window allows moisture to enter in amounts that are too large for the absorbent silica pellets in the window to prevent. Double-paned windows have a layer of gas between the two panes. Constant expansion and contraction of this gas as temperature fluctuates throughout the day places stress on the seal, causing it to fracture.

Know More
What causes moisture in double pane windows?
Credit: Don Klumpp Stone Getty Images

Full Answer

Some windows are more vulnerable to seal failure and the resulting moisture between the panes. Windows on the sunny side of a house experience more extreme fluctuations in temperature, resulting in more expansion and contraction. Vinyl windows have a higher failure rate, while some batches of windows contain manufacturing defects that cause the seals to fail.

Riverbedding and silica haze are two results of moisture condensing on the inside of double-paned windows. When water condenses and runs in narrow paths carving grooves into the window it is called riverbedding. Silica haze occurs when the silica pellets erode and accumulate on the window surface.

Condensation may not always occur when a window seal fails. In this case, infrared cameras can be used to record differences in temperature and detect failure. Replacement of the glazing assembly, sash or entire window is often necessary, depending upon the severity of the problem.

Sources:

  1. nachi.org

Is this answer helpful?

Similar Questions

  • Q:

    How do you clean double-pane windows?

    A:

    It is not possible to clean between the glass of a double-paned window without professional help. If condensation builds up between the two panes of glass, it means the seal is broken somewhere on the window and must be repaired to prevent the foggy appearance.

    Full Answer >
    Filed Under:
  • Q:

    What happens if double pane windows begin leaking?

    A:

    Double-pane windows leak due to seal failure or glass damage. According to the International Association of Certified Home Inspectors, chronically leaky windows invite unsightly mold growth and do not retain heat as efficiently and those with intact seals. About expert Lee Wallender explains that leaking double-pane windows do not require total replacement unless the faulty seal is beyond repair.

    Full Answer >
  • Q:

    How do you put a grid in a window pane?

    A:

    Install grids in a window pane by cutting vinyl grid material, connecting the lengths and securing them to the surround that attaches to the window with hook-and-loop tape. A tape measure, grid material, scissors, connectors and hook-and-loop tape are required. The process takes under an hour.

    Full Answer >
  • Q:

    How is window film used for decorating?

    A:

    According to Freshhome magazine, window film offers an inexpensive and easy alternative to decorating with etched glass or stained glass. Window film can also be used to make a home look and feel newer.

    Full Answer >

Explore