Renovation of Flat Roofs Utilizing EPDM Fastening Systems

In the quaint town of Stelle, a notable flat roof renovation project has been completed, showcasing a durable and sustainable solution for such structures. The project, which involved the renovation of unused single-layer insulation roofs and a rooftop terrace, was a success and has been featured in the General Construction Newspaper 34/2025.

The roof renovation work was assigned to B & F Bedachungen GmbH, a company renowned for its professionalism and object-specific training of its employees, as provided by Carlisle Application Technology. The company's employees were trained to work with the specific materials used in this project, ensuring a successful outcome.

The new construction involved the use of high-quality materials, including an elastomer bitumen welding strip, an aluminum-polyester combination carrier layer, a glass fleece vapor barrier, and impact-resistant polystyrene hard foam plates (EPS). The chosen sealing strip material was EPDM, known for its high elasticity, durability, and weather resistance, with a certified service life of over 50 years by Süddeutsches Kunststoffzentrum (SKZ).

The roof terrace was covered with construction protection boards and a WPC covering to create a walkable surface. The parapet supports and connections to window or door fronts were sealed using the liquid sealant LIQUISEAL 1C SF. For drainage, stainless steel gullies were used, with individual and parapet gullies for both the main and emergency drainage systems.

A significant aspect of the renovation was the waterproof connection of the surface sealing to the sleeves. This was achieved using hot air welding, a method that was used to weld the surface sealing to the prefabricated RESITRIX connection sleeves. The specific EPDM strip used was RESITRIX SK W Full Bond, equipped with internal glass fiber reinforcement and self-adhesive polymer bitumen on the underside.

Unused areas were secured with securants, covered with appropriate sleeves, according to general technical regulations. The roof renovation is an example of a durable and sustainable solution for a flat roof, demonstrating the effectiveness of this approach in extending the lifespan of such structures.

However, the search results do not specify which company carried out the renovation of the affected flat roofs in the neighboring town of Stelle. Despite this, the successful completion of the project in question serves as a testament to the potential of such renovation methods for flat roofs across the region.