Pilkington Optitherm™ S1 Plus is the latest in our low-e range offering ultra low-emissivity and achieving a Ug-value of only 1.0 W/m 2 K when incorporated in a double glazed IGU.

Pilkington Optitherm™ S1 Plus Pilkington Optitherm™ S1 Plus is an off-line coated, single stock product, offering superior thermal insulation performance with Ug-value of 1.0.

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 Optiwhite™ makes up the outer pane of the glazing unit.

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.

Benefits of installing energy rated windows: Choosing windows incorporating a low-e glass such as a glass from the Pilkington K Glass™ or Pilkington Optitherm™ ranges helps to prevent heat from escaping through the windows, reflecting it back into your home.

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.

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.

From new homes to older traditional buildings, Pilkington energiKare™ Triple delivers the best possible energy efficiency surpassing the best performing double glazed Insulating Glass Units (IGUs). Advances in technology have made windows a larger contributor to the energy efficiency of new homes.

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.