Iconic waterproofing

The innovative Dutch company Bitufa Waterproofing's product Flexobit contains only SBS and bitumen and has been sold to customers in over 20 countries. For example, it was used to waterproof the iconic Hotel Atlantis project in Dubai.

Near the economic hotspot of Zwolle in the east of the Netherlands, the innovative company Bitufa Waterproofing BV has its production facility in Wapenveld, with an associated laboratory and research department. Production focuses on bitumen membranes used for waterproofing of buildings, cellars and roofs, for example. Bitufa's most well-known product, Flexobit, contains only SBS and bitumen and has been sold to companies in the construction industry in over 20 countries. For example, Flexobit was used to waterproof the iconic Hotel Atlantis project in Dubai.

SBS, i.e., styrene-butadiene-styrene, is a thermoplastic elastomer that has excellent durability and ageing stability when mixed with bitumen. Because Flexobit is a bituminous membrane with no filler or carrier — which most other manufacturers mix in — the detail work around corners and pile heads, for example, is safe and easy, with durable adhesion even on rough surfaces.

In order for the specialized waterproof membrane to function optimally, and withstand a lifespan of up to 20 years, it is essential that the bitumen maintain a consistently high quality. Nynas has been delivering bitumen to Bitufa for over 40 years — currently Nytop 210. Combined with polymers, it ensures good elasticity at both low and high temperatures, increased joint strength and improved cooling properties.

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