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Glass is a
good insulator but it would need to be very thick as a
single pane in a window to have much effect. So rather than
have thick glass in your windows it is better to have two
panes of glass with an air or gas space between them. The
bigger the air space, the less heat is lost, up to an
optimum of 20mm.All well designed and well fitted double
glazed units significantly reduce the intrusion of unwanted
noise. The greatest change in sound insulation occurs for
cavity widths between 50-150mm.By specifying glasses whose
thickness differ by at least 30%, resonance effects are
suppressed and the acoustic benefits are, therefore,
maximized.
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The
benefits of having Double-Glazed Units
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Heat loss through single glazing will be at
least halved with double glazing
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Draughts through windows caused by sinking
cooled air will be less
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Rooms will be warmer
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Outside noise can be reduced
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Condensation can be reduced |
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Increases the saleability of the property |
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Savings on fuel bills |
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Glazing
Options
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Ordinary glass – called Annealed or Float glass
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Safety Glass – This can be either Toughened,
Laminated, Safety Wired Glass or Annealed glass
with safety film applied to it. Safety glazing
is mandatory for new installations within 800mm
of the floor in windows and partitions, and
within 1500mm of the floor in doors and side
panels. Glazing is marked in the corner with
BS6206.
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Security Glass- Laminated glass or Annealed
glass with film applied to it.
When security glass is installed you must ensure
there is an emergency escape route in case of
fire.
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Low Emissivity glass or Low E glass- The glass
must be used in a double glazed window so that
the special reflective coating, which is always
placed inside the cavity, is protected from any
damage
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Decorative glass - This can be Opaque,
patterned, Stained, Sandblasted or Etched.
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In
addition to the above standard glazing options there are
a number of further choices to be considered,
An advanced, high performance Low E Glass that allows a
clearer view through the glass can be used, traditional
Low E glass has a yellow tint.Self-cleaning glass, Not
100% maintenance free but it will not need to be cleaned
as frequently or thoroughly as conventional glass.
Argon Gas filled units are used to improve the thermal
and in some cases the acoustic properties of the double
glazed unit.
The
introduction of gas into the cavity of a double glazed
unit reduces the heat conductance between the panes,
helping to keep more heat in during the winter and out
in the summer. As a result living and working conditions
become more comfortable the whole year round. The
thermal insulation is further improved by using a Low e
energy saving glass on one side of the sealed unit.
This
combination of Argon Gas and Low e energy saving glass
can achieve an improvement in thermal performance in the
region of 50% over and above that of a standard sealed
unit. The standard gas used for thermal insulation is
Argon. Apart from its heat insulation properties, Argon
is non-toxic, sunlight stable, non corrosive, colourless
and odourless.
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Sealed Units
Leading & Georgian
Bevelled Fanlights
Stained Fanlights
Bevelled Door Panels
Stained Door Panels |
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Copy Right © 2006 Perfect Glaze
Ltd |