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Solar Control Glass Pilkington K Glass, Low E Glass, Suncool Glass.

Please give me more information on what types of glass to specify in order to keep out heat from the sun.

Here are just some of the types of glass supplied by Pilkington for use when solar control is an issue. Please note that with the exception of Pilkington Optifloat TM Tinted (formerly known as Antisun glass) that very few conservatory companies will normally offer these alternatives. 

Pilkington Suncool TM High Performance
Only available as Pilkington Insulight, these coated glasses provide a high solar control performance, with the highest level of thermal insulation. Appearance in reflection: Blue, Bronze, Clear, Green, Grey, Neutral and Silver. 

Pilkington Suncool Low Reflection
The durable coating on these glasses combines low external reflection with high solar control performance. The coating also possesses low emissivity properties for improved thermal insulation. Appearance in reflection: Blue, Bronze, Green and Grey.

Pilkington Suncool Classic
A range of high performance, reflective products with a durable surface coating applied to clear or tinted glasses. Appearance in reflection: Blue, Bronze, Green, Grey and Silver.

Other Information:

Click here for a brochure requestPilkington Eclipse TM
A series of five reflective, medium performance solar control glasses with a durable coating applied during manufacture to a range of clear or tinted glasses. The coating can be glazed to either the interior or exterior of the building to provide an extended range of different colour effects. Appearance in reflection: Blue/Green, Bronze, Grey, Clear Silver and Bright Silver (coating to exterior).

Pilkington Optifloat TM Tinted
A range of low to medium performance, body-tinted float glasses. The solar control properties and colour densities vary with thickness. Appearance in reflection and transmission: Blue, Bronze, Green and Grey. (NOTE: - In the past referred to as "antisun" glass"


Pilkington are only one of many glass suppliers world-wide. We are only giving their products so much prominence here because of their large market share in the UK.
If you are from the USA you may well find this link of interest.
If you live in Australia we suggest you have a look at the Pilkington - Australia web site at
Another worthwhile link is - A U-value calculator from Dow Technical Centre.
Different parts of the world quote U Values in different ways. In the UK all U Values are quoted as W/m˛K. The lower the U Value - the better the insulator. U-value is the measurement of heat transfer through a given building material, glass, etc
Follow these links for more information on Pilkington products:

Energy Management

Pilkington K Glass™

For more information, please visit:

Four Season Sunroom | About Pilkington Glass | An Important Question | Values and Insulation | arm-a-Glass™ | Types of Solar Glass
Looking for a new conservatory? Want information on the latest designs and styles in conservatories? Request a free brochure for details of this and a whole lot more by clicking here
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Looking for local UK suppliers of PVCu (also known as uPVC or PVC plastic), Wood (including Hardwood, Timber and Oak) and metal aluminium conservatories, Sunrooms and Blinds? - Follow these links to our Directory

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