by Vogue Building Services

About Conservatories and Different types of Double Glazing

An Introduction  to Glazing Conservatories, Sunrooms, Gardenrooms, Patio Rooms and orangries.

Conservatories and sunrooms have come a long way in the last ten years. Modern manufacturing methods ensure that you now have more choice and more reliable alternatives.

Your conservatory and sunrooms need not be a cold damp space when it’s winter or an unbearable hot house in the summer. With additions such as Pilkington “K” glass and “Anti Sun” glass you truly can have an all year round room.

Low E glass is a form of glass which when added to double glazing allows you to save even more energy. Typically double glazing using Low-E glass has energy conservation properties as good as normal triple glazing but without the 50% increase in weight.

When designing replacement windows or doors the addition of glass options such as “Georgian Grill” or “Leaded Lights” can have one of the greatest impacts on the overall look. Georgian Designs are usually created by a white aluminium profile inserted to make a design within the sealed unit. Lead Light Designs. Lead in varying widths are applied to the glass to make rectangular, diamond and various Tudor designs.

Low E glass or Pilkington “K” Glass: The Pilkington K glass has been proven to give up to 30% better insulation than other double-glazed windows. Pilkington K Glass is a brand name for a type of Low E glass. This glass varies from normal clear glass in that one side of the glass has a special metal coating, technically known as a low emissitivity, or Low E coating. This microscopic metal coating (which is almost indistinguishable from normal clear glass) allows through short-wave radiation, like sunlight, but reflects long-wave radiation, such as heat from fires and radiators, back into your conservatory making it easier to keep warm. As the Low E. coating on the glass actually makes the surface warmer to the touch, condensation is also reduced.

25 mm Polycarbonate: Most standard conservatories come with 16mm polycarbonate, a few only come with 10-mm polycarbonate. For a little extra you can upgrade to the better insulating option of 25-mm polycarbonate. With it’s six skins and reinforcing webbing, it provides perhaps the best insulating roof option for conservatories today. For the technically minded, it has an approximate “U” value of 1.6 as opposed to 2.3 for 16-mm polycarbonate. It is available in clear, bronze tint and opal options.  

Glass Conservatory Roofs: an essential for those of us who like to see the stars at night! A fair amount more expensive and much heavier than polycarbonate. You will also almost certainly need some form of shading. That said, it is no doubt one of the best options – very classy and inspiring. We especially recommend the Pilkington “K” option with this. There is also the option of “anti-sun” glass for that “tinted” effect.

Installing argon gas within the sealed units instead of air can have even greater energy savings. Argon is an inert gas, which has better thermal properties than dry air. In the UK we express the rate of heat loss in ‘U values’. The lower the U value, the greater the thermal insulation and savings on your fuel bill.

Warm-a-Glass™ construction uses Pilkington K low emissivity coated glass with integral dual sealed thermally broken spacer bar to create thermally efficient double glazing units. The unique design of the spacer and the material used reduces the hot or cold temperatures from transferring to the inside. Typical U-values (Wm2K) of 1.7 or 1.4 when argon filled is achieved.

With the warmer weather finally here we can all look forward to turning off the central heating and opening our doors and windows to enjoy a breath of fresh air.


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