Home     Double Glazed Units     Types of Glass     Building Regulations     Price List     About Us     Contact Us     Site Map      
DuraLite Sealed Units
Argon Gas
Georgian Bar Units
Lead Design Units
Stained Glass
Fanlights
Door Panels

 

 

 

 

Double glazed units:                                                      

How do Double Glazed Units Work?


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.

 

What are the benefits of having Double Glazed Units?


 

Heat loss through single glazing will be at least halved with double glazed units

Draughts through windows caused by sinking cooled air will be less with double glazed units

Rooms will be warmer with double glazed units

Outside noise can be reduced with double glazed units

Condensation can be reduced with double glazed units

Increases the saleability of the property with double glazed units

Savings on fuel bills with double glazed units

 

Glazing Options

 

Ordinary glass – called Annealed or Float glass

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.

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.

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

Decorative glass - This can be Opaque, patterned, Stained, Sandblasted or Etched.

 

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.

 

Georgian bars or leaded designs may be required.

 

 

Shapes.

 

Our glass insulating units are available as rectangles and a variety of shapes. Full size template is required for complex shapes (those other than triangle) i.e. parallelograms, trapeziums etc.

 

Holes.

 

Toughened glass can be supplied with drilled holes. The diameter of holes should however not be less than the thickness of the glass. Enquiries should are submitted for any holes required.

 

Shapes & Holes.

 

Shapes other than rectangles can be manufactured; advice should be sought prior to ordering. Templates are required for the manufacturer of shapes. Tolerances on shape and hole position are subject to the complexity of the shape.