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As a specifier for EPDM membrane or other EPDM supplies you are perhaps the most important link between the producer and the final installer of our material. If the specifications or Statement of Requirements leaves the door open to different interpretations, then this can result in failure costs and changes to the design. \


For HERTALAN® it is therefore important to support you not only with the necessary information, but also with good knowledge and useful tools. For the architect and specifier we develop a special frame design and website, we will inform you when this is ready to use. You can also download all the necessary information with a login code.


A flat roof always consists of a support structure and a roof deck which combined are referred to as the substructure. This substructure is decisive in the choice and method of attachment of our Hertalan EPDM membranes.

It is important to determine which Hertalan EPDM systems are suitable for each project and therefore it is vital to have an insight into the determination of the design of the roof. Each roofing system has its own Tender description, in which all necessary details are described. HERTALAN® specification texts leave no room for misinterpretation. For the choice of the type of EPDM membrane roof system we have created a separate document, which you can download here.


We have years of expertise and for HERTALAN® it is important that we share our knowledge with you. HERTALAN® is one of the few manufacturers of EPDM roofing systems in Europe, we have our own R & D department (with certified laboratory), our own rubber technologists in this area (the only one in the Netherlands) and extensive experience in the market for EPDM membrane materials (since mid-60s).


Most of our knowledge is provided within our detailed installation guidelines and information bulletins so we can support you in your choice of the suitable roofing system. This information is available in the download section of this site, if you need a login code we can supply one for you.


If you have any further questions please contact us. This is very easy using the form below.