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A SECURE BASIS FOR ALL GREEN ROOFS:

BITUMEN WITH PREVENTOL® B5

Nature knows no limits
As a result of its favorable properties, bitumen - a natural raw material made from crude petroleum - has proven to be effective for waterproof roof sheeting and other applications.  When designing flat roofs however, specifically green roofs, it must be kept in mind that plant roots can grow into and through the roof sheeting over time.  Leaks and damage from infiltrating water would be the result.  In practice, this problem has caused the planning and implementation of green roofs to fall far behind the actual demand.

 

Diverse requirements
Regardless of the construction, drainage system, type of vegetation and other factors, installing green roofs therefore depends on one key aspect: only a root-resistant waterproof layer can ensure long-term reliability for building protection.  LANXESS recommends treatment of bitumen roof sheeting with Prevnetol® B5 for a mature, proven solution.

 

Getting on the right track
With Prevnetol® B5, bitumen roof sheeting can easily be made resistant to root penetration.  Prevnetol® B5 makes it possible to combine the proven properties of bitumen with the required safety of green roofs.

 

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