1. How much will I pay for my windows, conservatory or fascias?

Under particular weather conditions dew (or frost) forms on any unheated surface (the ground, roofs, walls, cars, etc.) exposed to a clear night sky. In the past this effect has not happened on the glass in heated buildings, since the heat that escapes through the glass warms the glass up slightly as it passes through. Even conventional double glazing allows sufficient heat to escape to prevent dew forming on the external face of the glass.

For more information regarding this please download this PDF