This kind of material is produced inside of a proof container by expanding the crushed scraps with a vacuum, then it is brought to 340-350 °C by means of vapour for approximately 18 to 20 minutes.
The heat favours the discharge of the cork resins that amalgamate themselves with the grains; when it has cooled off, it is cut into slices of the desired thicknesses.
It is best used as a type of external insulation called "overcladding" as well as in the insulation of industrial machines and motors, cold gases ducts, and in many other industrial fields. Today it is more and more frequently used in the construction business.
Furthermore, it can be used to carry out the so-called "ventilated roofs", and because of its structure of agglomerated expanded grains, it has a higher level of insulation and is lighter.
It can be used inside the hollow spaces of outside main walls to enhance thermal insulation or inside partitions to enhance acoustic insulation.
However, it is not recommended for foundations because of its low compressive strength, but if it is placed on the last floor in adequate thicknesses, it mostly enhances the thermal insulation. The techniques for fixing it to the walls are the same as with the other type, or "cappotti" is shaved externally by adding glass fibres to avoid micro-flows.
Because of its qualities, this material can be used not only internally, but externally as well.
A variety of thicknesses are manufactured from 20 mm to 330 mm, as well as a variety of lengths up to 1 m.
The most common dimensions of this product in the construction business are 1000 mm x 500 mm, with thicknesses of 20, 30, 40, 50, 60, 80 and 100 mm.
The weight of this type of product is usually around 112 to 118 kg by m³.
Any other thickness is available on demand.