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.

Pilkington Optitherm Range

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!

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.

It is now called Pilkington Optitherm™. (See Product Data Sheet) Kappafloat S™: is the old name for our highest performance low emissivity glass. It is an off-line coated glass.

Pilkington K Glass™ S is our latest high performance, low-emissivity soft coated product which offers excellent thermal insulation when incorporated within an Insulating Glass Unit (IGU).

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

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.

Pilkington energiKare™ is the name given to our range of double and triple glazing used to improve the thermal efficiency of homes. It reduces the amount of heat lost through your windows and can also allow more heat energy from the sun in through the glass.