I am soon to have a new garage door installed (metal and one that is a lift up and over type) I want to get a really good product that will stop any graffiti that may be done to it, as it is going to be pure white! I live on the edge of an estate and my garage is at the end of my garden facing outwards and I have saved for a long time for this (16 years to be precise!) But it has come to my attention that it could possibly attract unwanted graffiti and I would be heartbroken if that were the case :( Can you advise me on a cheap but good product you have please? Regards Vicki.