Start with a thorough rinse to take off loose grit. Use two buckets — one with shampoo, one with clean water to rinse the mitt — so dirt never goes back onto the paint. A pH-neutral shampoo will not strip the coating.
Wash from the roof down, leave the lower panels for last, and dry with a soft microfibre towel or a blower. Avoid automatic washes with brushes; they are the fastest way to put swirls back in.
Sources and further reading
Products and methods change. Ask us before trying something new on your paint. How we write our guidance
