BIIG^® is a roofing membrane based on a – polyolefine - modified bitumen of the highest quality. BIIG^® is double reinforced with both glass - and polyesterfelt.  This combination of raw materials guarantees a high-softening point with an excellent cold bending temperature and thus enhances the product to perform in all climates. The two reinforcements are placed in the upper surface of the membrane. The characteristic lines of the glassfelt are clearly visible. This gives BIIG^® an excellent – and proven – resistance against aging, offers a maximum of dimensional stability and puncture resistance. On top of that, the upper positioned glassfelt protects BIIG^® against the spread of fire, corresponding to the highest category available on the market.

The special variant BIIG^® NoFlame system  has been designed in such a way, that it can be carried out completely without fire. All the details (edges, bleeding, etc.) must be performed with the specially developed BIIG^® self-adhesive membrane. BIIG^® SA has a very high adhesive cover layer. In combination with the special IIGO Fix ZK primer the  job attaches directly to most common substrates, even at lower temperatures.