The certified wooden frames are the most correct choice in energy saving, as they save in a house 8%-10% energy in relation to other frames, but also in accordance with the requirements of the «Exoikonomo – Autonomo» since:

They contribute positively to the protection of the environment since carbon dioxide is captured during the production of wood, with the raw material coming from forests managed according to the principle of sustainability. In addition, they have the highest thermal insulation performance and do not require thermal insulation systems, since the wood itself is the most insulating material, while ensuring high sound insulation performance. In terms of certification, they are CE certified, which ensures the safety and hygiene of consumers, without requiring special care since they are produced with modern methods.

Another great benefit is the low cost, especially if we consider the energy they save for a household, their long lifespan and their high aesthetics.

Let's look at some of the advantages mentioned above in more detail!

The International Environmental Protection Agency WWF, calculates that the production of each window produced from PVC, releases totally49,9 kilograms of carbon dioxide (CO2). On the other hand, similar problems are encountered in the manufacture of aluminium. Hazardous pollutants are released during its production and large amounts of CO2 are released during the production of the very large amounts of energy needed to isolate the material from its raw materials. In contrast, the production of a wooden frame of the same type and size releases a total of only 5.7 kg of CO2.

Also, the production process of wooden frames does not create risks of ecological disaster (see for example the ecological disaster caused by an aluminium factory a few years ago in Hungary, where ten people died from toxic sludge leaking from the factory’s cracked tank. The red torrent covered an area of 40 square kilometres and polluted the Danube.

Controlled cutting of forests

The wood products produced nowadays come from legally harvested timber (sustainable forest management). This means that the wood comes from forests where trees are replanted more frequently than they are felled.

Thermal insulation and thermal break

The most appropriate material, in terms of thermal insulation, for the construction of frames is wood. Compared to metals, the thermal insulation capacity of wood is 4,000 times greater than that of aluminium and 1,800 times greater than that of steel. The use of wooden frames in a building automatically reduces the energy consumption it will need to heat in winter or cool in summer. Also wooden frames do not require a thermal break system!

Thermal conductivity in Kcal/mh OC
Aluminum 203,88
Steel 69,05
Timber (Oak) 0,149
Timber (Pine) 0,104

Wood has very good sound insulation properties that other materials do not have. Due to its porous structure, it contains in its mass a large percentage of empty spaces, each of which traps sound and reduces resonance. This makes it a unique material for use in framing, considering the noise of cities and the need for quiet and. peace of mind that we all want to have when we return home.


All companies participating in the “Exoikonomo – Autonomo” campaign responsibly produce reliable and certified products.


The certified wooden frames do not require special care since they have been produced with modern methods!