Copyright 2009 -
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Q. What is U-
A. The rate of heat loss per square metre for a temperature difference of 1 degee Kelvin, or Celsius, between the interior and exterior.
Q. What is the “greenhouse” effect?
A. Clear glass will allow heat from the sun to enter the building, contributing significantly to internal temperatures.
Q. What standard are the units made to?
A. BS EN 1276 – 3. All our units are produced to this standard, which we are tested to every 6 months. Sealed units must be supplied by a company holding EN1276 certifacatation.
Q. Is there a date from which all units must be made to BS EN 1276?
A. April 2007
Q. How can I improve the U-
A. By using either a hard or softcoat low-
Q. Can heat be kept out?
A. Solar heat gain can be reduced by using a solar control glass.
Q. Does the thickness of glass improve the insulation value?
A. Very little
Q. Is there a self cleaning glass?
A. There are clear and tinted self cleaning glasses produced by the glass manufacturers with a hard hydrophyllic coating to help the removal of dirt when it rains or hosed down. There are other applications available that are applied to the surface of the glass prior to installation, the life of which should be checked with the manufacturers.