Pilkington K Glass
Which usually forms the inner pane of a double glazing unit, allows less heat to escape through your windows than ordinary glass. Thanks to a
special energy saving coating which lets the sun's rays through, but reflects heat from fires and radiators back into your home. Heat which ordinary
double glazing allows to escape.
The glass in your windows absorbs heat then radiates it again on the colder, outside, surface. Pilkington K Glass has what is called a low emissivity
coating on the surface that faces into the air gap of the double glazing unit.
Low emissivity means the coating is a poor radiator. The heat absorbed by the coated glass is inhibited from radiating across the air gap and then
from the outer pane to the cold outside world. Instead the heat is reflected back into the room by the coating.
It works in a similar way to a sheet of reflecting foil placed behind a central heating radiator which, as you know, bounces the heat back into the room.
It makes double glazing as effective as triple glazing and cuts fuel bills.

FENSA
stands for the Fenestration Self-Assessment Scheme. It has been set up by the Glass and Glazing Federation (GGF), with Government
approval, in response to the new Building Regulations for England and Wales. From 1 April 2002, all replacement glazing in dwellings
will come within the scope of the Building Regulations.

Text from FENSA.co.uk and Pilkington.com