Pilkington "K" Glass

The UK's leading solution for thermal insulation in homes and public buildings, Pilkington K Glass™ is a low emissivity coated glass which is easily stocked, processed and installed. Pilkington K Glass™ has been established for more than 15 years making it the trusted solution for meeting energy efficiency Building Regulations.

Pilkington K Glass™ usually forms the inner pane of an Insulating Glass Unit (IGU) such as the latest energy efficient glazing, Pilkington energiKare™.
The coating reflects heat back into the room whilst also letting in free heat from the sun known as passive solar gain. Pilkington K Glass™ helps windows to achieve high Window Energy Ratings to demonstrate compliance with energy saving Building Regulations Part L.

Financial Benefits

You've probably heard that the amount of energy we waste in our homes is directly linked to climate change. You'll definitely have noticed the ever increasing cost of energy for heating your home. But did you know that the type of glass you use in your windows can help your home be more energy efficient?

How it Works

The glass in your windows absorbs heat then radiates it again on the colder, outside, surface. Pilkington K Glass™ has a so-called low emissivity coating which is positioned on surface 3 (counting from the outside) of the Insulating Glass Unit (IGU).

The low emissivity coating is a poor radiator of heat. So the heat absorbed by the coated glass does not travel across the air gap to the outer pane and the cold outside world. Instead the coating reflects the heat back into the room.

Windows incorporating Pilkington K Glass™ allow heat from the sun through and keep heat inside, making it easier and more cost effective to keep buildings warm.