Among some, outside storm glazing is a contentious issue. We strongly recommend that all stained glass windows are covered on the outside with tempered or non tempered glass dependent upon the possibility of vandalism. Some churches have claimed that the amount of money spent on exterior glazing has been recovered within five years through fuel savings. All exterior glazing should be vented. We recommend glass as opposed to acrylic. Acrylic is a petroleum based product that scratches easily, discolours and becomes extremely brittle over time.
Our glass is wrapped in low profile aluminum and electrostatically painted with a pigment that closely matches the exterior colour of the frame.
Here we have an example of old lexan storm glazing protection being removed from a church and new tempered glass being installed. The lexan has yellowed over the years causing a reduction in light entering the the window, as well as decreasing the beauty of the building and stained glass window behind it.
Here is another example of a large set of windows before and after where we remove the old lexan and replaced it with tempered glass.
Quite a contrasting difference between using glass over lexan.