Replacement of the thermal glass
Over the years, the sealant surrounding the thermos glazing degrades, allowing moisture to penetrate between the two panes and condense. This is a phenomenon that has the effect of fogging the landscape, the unsealed thermos having lost its insulating properties.
Faced with such a situation, many would be inclined to perform a complete replacement of the window. However, if the frame and frame are in good condition, or in a condition to be repaired, the simple replacement of thermos glazing proves to be the designated choice since it allows the window to return to its original performance in addition to being the most economical solution. Replacing the thermos costs a fraction of the price of a complete window change.
Drilling holes in glass: a controversial solution
When the thermos is fogged, several companies offer to restore thermos glazing by drilling holes in the glass and then plugging them back following the extraction of moisture from the glazing. However, we recommend replacing the thermos. The extraction of moisture following the drilling of holes is a highly criticized technique and its effectiveness is far from having been proven in the long term.