Glass cleaning
The glass used in most double-glazed units can be easily scratched and so we recommend that you remove hand jewellery prior to cleaning. Heavy external grime should be removed with a simple soap/water solution followed by the use of any proprietary household glass cleaner with a soft cloth.
Leaded glass cleaning
Extra care must be taken when cleaning leaded windows so as not to dislodge the lead from the surface of the glass. Warm soapy water applied with a soft cloth is adequate for cleaning leaded glass. Please note that external lead will oxidise this is a natural phenomena and cannot be avoided.
Scratched glass
Scratches can be removed with jeweller's rouge or equivalent rubbing compound. (Ask your installer for further advice)
Glass defects
During the manufacturing process all double glazed units can be susceptible to a degree of surface damage, meaning that certain imperfections cannot be avoided, even in the most carefully controlled production environment. Such blemishes are inherent in all double-glazing and acceptable within the highest standards of the industry and are, therefore beyond our control. We use only the very highest quality glass available, whether laminated, toughened or float glass, all of which conforms to the requirements of BS6262. Double glazed units produced to BS5713 and BS EN 1279 (mandatory March 07), conform to the highest standards
Minor imperfections may still occur
- Transparent glass used in the manufacture of double glazed units is identical to that used in traditional single glazing and will, therefore have a similar level of quality.
- Both panes of the double glazed units shall be viewed from the room side, standing at a distance of two metres in natural daylight and not in direct sunlight. The area to be viewed is the normal vision area, with the exception of a 50mm wide band around the perimeter of the unit.
- Flat transparent glass shall be deemed acceptable, if the following phenomena are neither raised or in clusters:
a. Totally enclosed seeds
b. Bubbles or blisters
c. Hairlines or blobs
d. Fine scratches not more than 25mm long
e. Minute embedded particles - 4. Obtrusiveness of blemishes shall be judged by looking through the glass and not at it, under normal lighting conditions as described in paragraph 2.
Patterned glass
The glass used originates in very large sheets and due to spacing repetition, centralisation of any design, in a specific window cannot be guaranteed. There is no correct direction for patterned glass - i.e. in general there is no 'right way up'.
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