Gütegemeinschaft Kunststoff-Fensterprofilsysteme e.V.

You are a planner, architect or developer?

Here is some useful information on plastic windows and quality and testing. Our Annual Reports can be viewed here.

Are you a window manufacturer?

This is where you can find out more about quality-assured plastic window profile systems and components as well as a brief overview of the relevant guidelines, ordinances and laws.

Are you a member?

This is where we tell you about planned meetings of the expert groups and provide agendas and minutes for you to download. We have also collected information about our projects in this area.

About us

RAL-Gütegemeinschaft Kunststoff-Fensterprofilsysteme e.V. (GKFP) is an association that performs and provides neutral and external quality monitoring and product certification for its member companies in the form of voluntary self-regulation. Its aim is compliance with the highest product quality standards in order to ensure the lasting fitness for use of the manufactured products. Products that are certified by the GKFP are allowed to carry the RAL quality mark and be used as components for such products. Opens internal link in current windowmore about us



GKFP is new EPPA member

The Quality Association is now member of the European PVC Window Profile and...[more]


General Assembly Meeting 2018 Jena

The General Assembly Meeting 2018 took place in the city of light Jena on 03rd...[more]



We now look back on the trade fair FENSTERBAU FRONTALE 2018. On the joint booth...[more]