The multiple benefits of double glazing

If we analyze how responsible constraction materials are for heat loss in an average house we see that:

  • 20% of heat loss is because of the roof
  • 25% of heat loss is because of the walls
  • 20% of heat loss is because of the floor
  • 35% of heat loss is because of the windows


What is double glazed glass (Low-E)?

New generation double glazing (Low-E) is a transparent glass, that has a covering of microscopic metallic oxides on one side. This coveringg does not allow heat from inside the house to be transferred outside and vice versa.

Double glazing and warm climate:

Double glazing:

►Reflects the infrared light of the sun (heat)
►Acts as a shield to indirect heat from the surrounding area
►Deacreases the cost of cooling

Double glazed glass has the ability to reflect infrared sunlight (heat) and allow only visible light to come through. When sunlight hits an object (pavement, mesh , balcony, flowerpots, etc.), it heats up and radiates indirect heat, which tries to come inside. Double glazing acts as a shield against this type of heat and does not allow it to enter the interior. This helps us keep our homes and workplaces cooler in the summer, since heat from our surroundings and heat that is radiated from various objects does come into the interior, so our homes are cooler and as a result the cost of cooling is lower.

Double glazing and a cold climate:

Double glazing

►Maximizes the beneficial effects of the sun.
►Acts as a shield against the heat that trying to escape from the interior.
►Decreases the cost of heating.


Double glazing maximizes the beneficial effects of the sun. The energy from the sunlight is absorbed by the objects found indoors , like sofas and carpets and is essentially turned into heat. Double glazing acts as a shield towards this heat and does not allow it to escape through the windows. Let us not forget that the heat indoors moves towards the colder windows. Double glazing functions like a mirror and reflects the heat trying to escape back into the room , keeping it warm, leading to lower heating costs.

Overall advantages of double glazing:

The overall advantages of double glazing can be summarized as follows:

  • More efficient thermal insulation in winter
  • Easier cooling in summer
  • An annual  decrease of up to 35% in heating and cooling costs
  • Essential contribution to the protection of the environment
  • A decrease of up to 70% of ultraviolet radiation which ruins carpets, curtains, furniture, etc.
  • A slight difference in the cost from double glass
  • Similar appearance to plain glass



  • Comfort throughout all the seasons of the year.
  • In winter the double glazing which is a double vitrescent glass , offers 3 times more thermal insulation than common glasse.
  • In the summer it blocks twice the amount of heat.
  • Greater comfort on a big glass panels due to the minimization of cold points and connections.
  • The saving of energy due to decreased demand of heating.
  • Protection of the enviroment due to decreased energy consumption needed for heating.
  • Decreased condensation on the inside of the windows. since the external glass panel is at a temperature closer to room temperature.
  • Capability of increasing the size of the glass surfaces without increasing the demand for heating.
  • Greater comfort due to maintenance of the required interior temperature.
  • Decrease in the cost where air conditioning is required.
  • Decrease of the emission of UV rays , thus protecting the furniture.