Ask Pilkington


Ask Pilkington

What glass to specify to keep a conservatory cool in summer and warm in winter?

Pilkington Suncool™ One is a neutral product, which provides excellent solar control, keeping your conservatory cooler on hot days. The added benefit is its thermal coating, so during cooler weather, it works by reducing the amount of heat escaping from the room.  

If a tinted product is preferred, you could choose from the Pilkington Optifloat™ Tint range, which is available is grey, blue, bronze or green.  

An attractive addition to any home, a conservatory requires a lot of hard work in order for it to look great all year round. Self-cleaning glass is the ultimate solution for conservatory owners. A glass roof is a striking feature but must be well maintained in order for it to fulfil its purpose. Pilkington Activ™ Blue and Pilkington Activ SunShade™ Neutral were designed with conservatories in mind and are the perfect self-cleaning and solar control solutions for glass roofs. 

Pilkington Activ SunShade™ Blue combines solar control performance with self-cleaning. When used in an insulating glass unit with an inner pane of Pilkington Optitherm™ S1 Plus, the unit can cut out 80% of the sun's heat. 

Pilkington K Glass™ and Pilkington K Glass™ S and Pilkington Optitherm™ S1 Plus are not solar control products: however, their presence in a double glazing unit can considerably improve its thermal insulation (reduce the U-Value) over conventional units. The ideal position for these products’ low emissivity coating is on the inner pane facing the cavity. Hence, if the requirements are for reduced solar gain and improved thermal insulation, both types of glass can be combined in one unit. 
Better insulation and no cold spots near windows make Pilkington K Glass™, Pilkington K Glass™ S and Pilkington Optitherm™ S1 Plus an excellent choice for conservatories, because thanks to a special low emissivity coating on the surface of the glass, it lets the sun's rays through, but reflects heat from fires and radiators back into your home - heat which ordinary double gazing allows to escape. In fact, it will typically keep an unheated conservatory much more comfortable for a greater part of the year than ordinary double glazing, allowing the occupier to make the most of the conservatory all year round.   
This in turn has the knock on effect of not only lowering household bills, but also helps the environment by reducing the amount of heating needed to keep a house warm. Safety and security issues can also be tackled, as insulating units incorporating Pilkington K Glass™, Pilkington K Glass™ S and Pilkington Optitherm™ S1 Plus can be manufactured in both toughened and laminated forms.
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