Foggy or Cloudy Looking Windows
posted by admin in Window CleaningWindow Cleaning that appear to be dirty even after they have been cleaned are typically obscured from one of two common sources. First, it is likely that the glass may be stained on the outside surface from foreign contaminants. Hard water deposits from lawn irrigation systems, leeching from exterior surfaces and overspray from deck and patio sealants can stain a window and cause it to have a dirty appearance. This type of staining is easy to identify and can be removed in most cases. The other common cause of visual obstruction is insulated glass unit failure which is not as easily remedied. This occurs when the airtight seal joining the two panes of glass together is compromised. The ‘broken’ seal allows moisture into the unit causing condensation and eventually an obvious hazy appearance.
The main reason a seal fails is the constant atmospheric pressures combating the Window Cleaning and extreme temperatures that cause the Window Cleaning to expand and contract. The most punishing factor however, is the direct sunlight throughout the day. That is why most ‘bad windows’ are found on the sunny side of the home. As the sun ‘bakes’ the window, it causes an increase in temperature between the panes of glass and makes the air molecules more active, increasing pressure in the chamber, on the glass and on the seals.
Eventually as the moisture builds up inside the Window Cleaning it finally reaches a maximum capacity where it can no longer absorb the moisture and it becomes visible as condensation between the panes of glass. Initially this condensation may appear and disappear through evaporation but ultimately the moisture becomes permanent and stains the inner surfaces of the glass.
Tags: anc, Capacity, causing condensation, cleaning, crease, increasing pressure, lt, Window CleaningRelated posts
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