Before starting washing the flaps, it is necessary to close them and remove all dust with a brush. You can also use a microfiber cloth or, if possible, a vacuum cleaner.

How to clean each type of shutter: plastic, aluminium, wood, PVC…
Plastic. If they can be dismantled, the ideal is to take them to the bathroom and wash them thoroughly with warm water and soap.

Wood. To wash them, you can use a mixture of two equal parts of water and vinegar. Avoid chemicals, which can be very aggressive.
Aluminium. They can be cleaned like plastic ones, taking care not to let them rust.
PVC. In this case too, it is recommended to wash them with soap and soap, preferably liquid and Marseille soap.