Wood is one of the most antique materials used by humans in the construction. It is exceptional for the production of windows and doors and regenerates by itself. During centuries wood has demonstrated to be an incomparable and non replaceable material for the construction of elements exposed to the climatic inclemencies.

Today wooden windows with an antiquity of more than 200 years are still in use, even though these windows were not made with the modern methods of production of the present.

Dark Red Meranti

The main qualities of Dark Red Meranti wood are its low absorption of humidity, main guarantor to maintain the dimensions and in consequence the optimal functioning of wood elements exposed to the outdoors, and its resistance against termites and fungus.

Dark Red Meranti wood also has an extraordinary firmness and the smallest coefficient of expansion by length, and this with great distance to all other materials used for production of windows.

The expansions are:
- Dark Red Meranti Wood 0.002 mm/m
- Steel 0.012 mm/m
- Aluminum 0.024 mm/m
- PVC 0.080 mm/m

Variations in temperature and humidity in the atmosphere cause different expansions depending on the material used, like indicated previously, which develop into problems like variations that go from null to very significant in the correct operation of the elements. This problem augments proportionally to the increase of the dimensions of each individual element.

Some examples are: loose of the correct functions (closing, sliding and opening), thermal protection, noise protection and isolation against rain and winds.