Documentation and guidance
Documentation and guidance for Rationel products in one place
![4. ApprovedInstallers](https://rationel.co.uk/wp-content/uploads/sites/2/2021/09/4.-ApprovedInstallers.png)
Installation
Ensure your windows and doors and their component parts are installed correctly by following our videos and guides.
![6.Anmeldskade-1](https://rationel.co.uk/wp-content/uploads/sites/2/2021/09/6.Anmeldskade-1.png)
Maintenance
Regular care and maintenance of your windows and doors is important in order to ensure the longevity of the product and maintain your warranty.
![3. DEclarations](https://rationel.co.uk/wp-content/uploads/sites/2/2021/09/3.-DEclarations.png)
Declaration of performance
View our Declaration of Performance for Rationel’s products according to EN14351-1:2006+A2:2016.
![2.Kon_-1](https://rationel.co.uk/wp-content/uploads/sites/2/2021/09/2.Kon_-1.png)
Contact customer service
Whether you need to order new parts, need help with maintenance or are just looking for some advice, our service team are here to help.