Tested brand quality for the practice
Over 35 years of experience
In over 35 years, DEFLEX® has become a brand name for sealing systems and special constructions in window and façade construction.
Quality that speaks for itself
Quality products in OEM quality as well as the variety of cross-system and craftsman-friendly solutions characterise the DEFLEX® range.
Today, we are proud to be named market leader for sealing systems and individual components by numerous market partners at home and abroad.
In close cooperation with testing institutes, such as the IFT Rosenheim (Institute for Window Technology), selected products are regularly tested and inspected for practical suitability in order to comply, among other things, with the CE labelling obligation and the Construction Products Regulation.
Years average length of service
Financially strong equity ratio
Our service for you
DEFLEX® is always there where you need us. We are there for you through all channels and will be happy to advise you on all technical questions relating to the installation of windows and façades. Our product range is available to you via telephone, fax and online with over 3,000 products. The proven SAM system will be succeeded by the B2B webshop with shopping basket and stock display from the second half of 2022.
With our nationwide field service, we are personally on site for you. As problem solvers and technical customer advisors, we have permanent contact persons in the office and in the field.
In over 35 years, DEFLEX® has developed into a brand name for sealing systems and special constructions in window and façade construction. The DEFLEX® range is now characterised by a variety of cross-system and craftsman-friendly solutions as well as quality products in original equipment manufacturer quality. Numerous market partners at home and abroad name us as the market leader for sealing systems and individual components - and we want to remain so. We regularly have selected products tested and inspected for practical suitability in close cooperation with testing institutes, IFT Rosenheim (Institute for Window Technology) and others, in order to comply with the CE marking obligation or the Construction Products Regulation.
DEFLEX® is always there where you need us. With our worldwide field service, we are personally on site for you. Fixed contact persons in the office and in the field work for you as solution finders and technical application consultants. We are also happy to advise you on all technical questions regarding the installation of windows and façades via other channels such as telephone, fax, video call or online. Our product range offers you over 3,000 products for all building situations - or you can have special custom solutions manufactured. Trust in reliable quality!
As a DEFLEX® customer, you can always rely on tested and monitored product quality. "Designed and made in Germany" is firmly anchored in our company philosophy. We set up our tools in certified production lines mostly in Germany - but exclusively in Europe. The initial type testing of many DEFLEX® products are part of and the basis for the required CE marking obligation of window and façade manufacturers.
Our customers benefit from over 35 years of experience in innovative development for window and façade construction. At the same time, we have always focused on the essentials and the user benefits at the lowest possible product costs - that is our top priority.
Sustainable management is part of DEFLEX® and an essential component of the corporate strategy. This is documented in the corporate guidelines, the annual targets for the company and its employees, the specially designed training plans and the constant exchange with professional associations and institutions. You can find everything else about sustainability on our "Sustainability" page.
Over 35 years of experience
Emerging from the Schulte-Stemmerk Group, a well-known manufacturer of sealing systems for industry and construction, the former Duisburg-based company DEFLEX®-Dichtsysteme GmbH has specialised in the sealing of windows and façades since its foundation.
Today, our customers benefit from the experience of 35 years of innovative development for window and façade construction. Numerous patents underline the innovative spirit at DEFLEX®. Always focusing on the essentials and user benefits at the lowest possible product costs - that is our top priority.