DuPont Typar Geosynthetics, a range of spunbond nonwovens developed for civil engineering and construction applications, are being successfully used in Hungary’s ‘Living Danube’ environmental project.

 ‘Living Danube’ is an advanced wastewater treatment plant project in Budapest, that is being built to aid the general recovery and environmentally sustainable management of the Danube River.  

According to DuPont, an earlier stage of the project was recently completed resulting in the plant now being protected by a high performance green roof that exploits the properties of DuPont Typar Geosynthetics to deliver long-term reliable functionality.

“The plant’s large flat roof (about 10,000 square meters in area) was designed as a green vegetation surface, to absorb airborne dust and similar impurities, drown noise and retain up to 90% of water, preventing rainwater from draining into the sewer. Roof vegetation consumes carbon dioxide and releases oxygen. Green roofs also provide protection to roof structures and insulation layers against temperature fluctuations and UV radiation, which significantly improves their lifetime,” a spokesperson for DuPont said yesterday.

More than 78,000 square metres of DuPont Typar SF Geosynthetic was specified in the project.  Typar, a DuPont Building Innovations product, is a spunbonded, non-woven fabric made of 100% polypropylene continuous filaments.

It has high tensile properties and excellent water permeability and is one of the best known and broadly used high-quality materials for road building, drainage systems and inversion roofing. DuPont says it does not soak up water and cannot freeze, thus eliminating a number of technical problems.

Bellavics László, founder of the Hungarian Green Roof Builder Association who designed the ‘Living Danube’ green roof, said:

“We have been working with DuPont Typar for over 10 years. Our long-term experience shows the main benefit of DuPont Typar is its unique, thermally-bonded nonwoven structure which brings an exceptional mechanical strength and durability of the geosynthetic and longer life to the green roof where it is installed. Another advantage is that its pores do not clog with soil particles, which guarantees its long-term filtration ability.”