As an installer I highly recommend you hand wash your vehicle. Furthermore, we recommend you seal your vinyl wrap every few months. Generally, we ask you avoid power washing to the point where you focus the nozzle closely or near the edges; these actions will damage paint, and may possibly tear vinyl. Also avoid automatic washes if possible; these washes will also severely damage paint, and other components of the vehicle; it is safe to say it will damage vinyl over the long term also. These car washes also use harsh chemicals which may dry out the vinyl. For this purpose we do ask you seal your vehicle often if you use automatic washes often.