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The Science of Double Glazing

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What is Double Glazing?

Double glazing is made from two pieces of glass sealed together with an air space between. A double glazed window sits in your frame just as single glazing would, but provides a number of extra benefits. See our benefits page.

Clear glass accounts for less than 5% of a window’s insulation, the rest is being supplied by the air layers on either side of the glass.

Since the heat flow resistance of still air is much greater than that of glass, a glass unit made from two panes, enclosing an air space will have about twice the insulation value. Double glazed units provide insulation to windows and doors of a building like fiber-glass batts insulation to a wall, helping you to maintain a consistent in-home temperature throughout the year.

 
The Bit in the Middle

Warm Edge Technology is a term that has evolved as a result into IGU spacer systems which break the thermal bridge at the transition of the glass and frame edge. These less conductive spacers allow the IGU to have a perimeter edge which is warmer than a conventional aluminum spacer. This warm edge, comprising 50-60mm of an IGU perimeter, results in the glass surface being warmer in winter, which in turn means the IGU performs more efficiently and less condensation occurs.

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draught-seals
Permanent Draught Seals

Our Permanent Draught Seals are designed to offer an affordable solution to keep your home warmer. Designed for timber-framed windows and doors.

They maximise your current window and door frame’s thermal insulation by eliminating cold airflow into your home. Combined with retro-fit double gazing our draught seals provide the ultimate in heat retention for your timber windows and doors.

Benefits included: Eliminate draughts, improvement of heat insulation, improvement of sound insulation, and improvement in weather tightness.

 

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