Nynas news

03/01/2014 13:40

A roof over your head

With the right kind of bitumen, it’s possible to avoid expensive, complex roof renovations. Nynas is one of the leading suppliers.

The roof is the most exposed part of a building. Rain, wind, snow and ice, as well as hot sunny days, can all subject the material to extremely tough stresses. 

To prevent moisture from penetrating the structure of the roof, and also to guarantee a strong resistance to mechanical wear, builders use roofing felt, or to give it its proper name: roofing membrane. 

A roofing membrane contains limestone filler and bitumen. The proportion of bitumen is very high, 65-70%, in contrast to asphalt, where the proportion is around 5-6%. Furthermore, a relatively rigid, hard bitumen is used with especially tough demands to withstand, for example, ageing, high temperatures and fire. 

Polymers are now usually added to the bitumen used to manufacture roofing membrane. The advantage is that the polymer modification enhances the elasticity at both low and high temperatures, creates greater splice strength and also makes it possible to use softer bitumen, which improves the thermal properties.

Nynas has developed a product – Nytop 210 – that is being used by many leading roofing membrane manufacturers all over Europe in their production.

Further reading

3 tyre trends

Herbert Fruhmann, Nynas Market Manager Tyres, identifies key issues that are currently shaping the industry.

Read more about 3 tyre trends

Reflections on developing sustainable products

Key decision makers at Pirelli, Borealis and Nynas share their views on how to meet demands for more sustainable products and solutions.

Read more about Reflections on developing sustainable products

Nynas at industry meetings in the Americas

When the leading actors in the electrical industry and the base oil & lubricant sector gather, Nynas’ specialists are on hand to talk about the company’s unique products.

Read more about Nynas at industry meetings in the Americas