Like with majority of materials and products, composite fencing is not maintenance free, however, it does not require sanding, painting or staining like wood does. A simple regular wash with a hosepipe, warm, soapy water or a power wash is enough to look after your composite fencing for years to come.
Take care when using a power wash as you can damage the surface finish of the boards if the pressure is too high or you go too close with the hose.