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!

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

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 energiKare™ Advantage For applications requiring an optimised Ug value we introduce a new concept for the ultimate in thermal efficiency. By combining Pilkington K Glass™ on Surface 4* of an IGU with Pilkington Optitherm™ S1 Plus ultra low-emissivity glass on Surface 2** a very low Ug-value of 0.9 W/m²K can be achieved.

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 Activ™ Clear is the original self-cleaning glass with advanced dual-action for superior results. It now forms part of the Pilkington Activ™ Range that also offers self-cleaning glass combined with solar control properties.

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.