The company Winterberg & Knapp GmbH was founded in 1989 by the merger of the two family businesses Johann Winterberg and Volker Knapp. As a medium-sized company, we are specialised in the production of many fasteners used in roof building and facade engineering.

The main products are washers and saddle washers with cured-on rubber used in facade engineering and in the automotive industry.

The coating or vulcanisation of rubber is done at our own factory. Quality products for the highest stress emerge in one operation. We manufacture to your specifications, according to DIN, drawing or pattern, dimensions, material strength, thickness of coating, EPDM or neoprene (CR), there are many possibilities.

A machinery with modern CNC machines are operated by experienced members of staff. Basis and prerequisite for the economic production is the manufacturing of punching tools at our factory. A guarantor for our adherence to schedules, flexibility and short delivery time. The responsibility for tools and final product is in one hand. For the benefit of customers.

Our products are subject to stringent checks during production and the final product. Our quality assurance works according to ISO 9001.2000.