OLYMPIC STADIUM, BEIJING, CHINA

Caparol's coatings still performing at the World Athletic Championships.
It was good to see the National Stadium in Beijing still looking fantastic for the World Athletic Championships this summer as it did in 2008 when China hosted the Summer Olympics.

It was good to see the National Stadium in Beijing still looking fantastic for the World Athletic Championships this summer as it did in 2008 when China hosted the Summer Olympics.

The National Stadium, designed by the renowned Swiss architects Herzog & de Meuron, is situated on a hill in the centre of the Olympic complex in the north of Beijing. Also known as the "Bird's Nest” is still a truly iconic building.

Innovative special coating

Caparol had worked with Herzog & de Meuron previously on the very successful Allianz Arena in Munich, so were delighted that they wanted to collaborate with them again on such a prestigious and interesting project.

All wall surfaces are coated with red paint, which shines from behind the nest-like steel tracks of the stadium. The paint, therefore, plays an important role in the character and the external appearance. The architects were keen to work with Caparol again due to the suitability of the paint and also because of their high level of professionalism.

Technologically advanced paint

The special red colour was largely produced at the Caparol site in Beijing, utilising the performance of Chinese specialists plus the expertise of Caparol Germany. Technical instructions were given by Caparol to paint the 90,000m2 wall surface, for this specialised coating. The substrate consisted of concrete and cement-bonded fibre board, which was first coated with gauze with a plaster layer applied on top with a toothed trowel. After drying for two days, the surfaces were completely levelled by sanding and felting. In this phase of the project, the special red coating was applied twice using efficient spraying techniques. The gloss finish of the coating was developed specifically for this project, in collaboration with Herzog & de Meuron.

Retained appearance for the future

For this prestigious building it was necessary that the specialised coating could withstand local climatic and environmental conditions and yet still retain a clean look. Research was carried out in the Dr. Robert Murjahn Institute (RMI) in Ober-Ramstadt. In this study, various coatings were examined for contamination and UV-resistance and the impact of various weather conditions. The outcome was a specially developed paint which in addition to the required quality standards in terms of sustainability and environmental friendliness, guaranteed extremely high colour fastness.