Pilkington Optitherm™ S1 Plus combines superior light transmittance with a highly neutral colour. It is the ultimate in thermal insulation and should be specified for any situation where excessive heat loss is a concern.

A product from the Pilkington K Glass™ or Pilkington Optitherm™ ranges makes up the inner pane of the double glazing unit. Its primary function is to prevent heat escaping through the windows and return heat back into the home.

Specify your projects quickly and easily with Pilkington Spec-it! If you know the target U and g values for your project, then Spec-it! can help you select the right product. Two clicks to Spec-it!

Pilkington Optiphon™ is a high quality acoustic laminated glass that offers excellent noise reduction without compromising on light transmittance or impact performance. Pilkington OptiShower™ Anti-corrosion glass for the bathroom; Pilkington Optitherm™ S1 Plus

Install low emissivity (low-e) energy-efficient windows to help to reduce your heating bills by up to 20% each year. Using a product from our energy-efficient glass range in your windows will reduce your home’s CO 2 output, making your carbon footprint smaller and your home more environmentally friendly.

The special energy-saving coating on Pilkington Optitherm™ S1 Plus allows the sun’s rays through, but reflects heat from radiators and fires back into your home, saving energy and reducing your heating bills.

Pilkington Spectrum is a Windows-based glass performance model which enables you to quickly and efficiently calculate key properties of insulating glass units without the need to construct and measure them.

Glass from our Pilkington Activ™ self-cleaning glass range, can help to reduce the maintenance on these large expanses of glass. Pilkington Optifloat™ Opal An attractive translucent glass offering style and privacy which makes an ideal finish for applications all around the...

When fitted with Pilkington Activ™ combined with a thermally efficient glass such as Pilkington Optitherm™ S1 Plus, your transformed conservatory will be warmer in the winter, cooler in the summer and will look cleaner than ordinary glass.

An insulating glass unit comprising 4 mm Pilkington Optifloat™ Clear outer pane, 16 mm argon gas-filled cavity and 4 mm Pilkington Optitherm™ S1 Plus inner pane has a centre pane U value of 1.0 W/m 2 K. For more information on our range of products for thermal insulation, please click here.