RENOLIT CP

Corrosion is defined as the gradual destruction of materials by chemical or electrochemical reactions with their environment. These interactions result in alterations to the characteristics of the metal. Metals are only found in nature in the form of ores. To transform these ores into a usable material, a conversion process is used to extract oxygen. When metals come into contact with oxygen they corrode to revert back to their original oxidized state.

There are a total of six corrosion categories. They are categorized based on the location of the structures and the prevalent local corrosion potential.  

• C1 = Minor: Heated buildings, reduction in the thickness of unalloyed steel ≤ 1.3 µm (microns)
• C2 = Low: Atmospheres with little pollution as well as unheated buildings with condensation; reduction in the thickness of unalloyed steel > 1.3 – 25 µm
• C3 = Moderate: Urban and industrial atmospheres with low SO² pollution, low-salt coastal atmospheres as well as production areas with high humidity levels; reduction in the thickness of unalloyed steel > 25 – 50 µm
• C4 = High: Industrial atmospheres and coastal atmospheres with moderate salt levels; reduction in the thickness of unalloyed steel > 50 – 80 µm
• C5 = Very high: Industrial areas with high levels of humidity and aggressive atmospheres, coastal atmospheres with high salt levels; buildings or areas with almost permanent condensation and heavy pollution; reduction in the thickness of unalloyed steel > 80 – 200 µm

CX = Extreme: Offshore locations with high salt levels, industrial areas with extreme humidity and aggressive, sub-tropical or tropical atmospheres; industrial areas with extreme humidity and aggressive atmospheres; reduction in the thickness of unalloyed steel > 200 – 700 µm

Corrosion can affect the strength of steel structures which can lead to downtimes and significant financial losses.

To protect steel and metal coatings against corrosion, a number of corrosion prevention systems can be used. Such systems normally use two or more corrosion protection coatings which, depending on the location of the structure, can differ in function and coating thickness.

The film is made of PVC.

Yes, the RENOLIT CP film is certified according to ISO 12944-9 CX (protection duration: High) and provides long-term corrosion protection of 10 years.

CX represents the highest corrosion category. This means that the film protects steel and metal coatings in locations in which the risk of corrosion is extremely high. These include industrial areas with high humidity levels, high salt levels and especially aggressive atmospheric conditions.

Yes, the film is UV resistant (ISO 4892-2).

The thickness of the film itself is 160 μm (microns). Together with the adhesive, the overall thickness of the film is ≥ 230 μm (microns).

The standard colour of the film is RAL 7035 (light gray). The film is also available in other colors upon request.

The applied film can withstand temperatures of between -30 and 70 °C.

The film can be applied at temperatures of between 10 and 35 °C.

First of all, all old paint and rust must be removed and the substrate is thoroughly cleaned. A zinc primer is then applied to protect against renewed corrosion. The zinc acts as a sacrificial anode and thus combats the oxidation of the steel.

Finally, the RENOLIT CP film is applied (bubble-free) with a squeegee.

Wind turbines are ready for operation directly after the application process has been completed.

Yes. The film can be easily and rapidly applied after the application personnel have undergone training or instruction.