By the way, when I had my convertible 968 with a canvas roof, I cleaned the roof using soap and a scrubbing brush. Afterwards, I dedicated a significant amount of time to thoroughly rinsing off all the soap with a garden hose. I never used a power washer on the roof. The Waves hand wash service available in our area was satisfactory for doing the bodywork. However, I took the precaution of closely observing and providing detailed instructions to the service providers before allowing them to work on either of my cars, starting with the S204 model. This ensured that they were aware of my meticulous standards, but they ultimately performed well. The other adjacent Waves mob are absent.