Hi My red brick external wall has been sprayed with light blue graffiti. I have previously used graffiti removal gel to get rid of prior graffiti but now this has happened a second time I want a permanent solution. I've looked at a few of your products but am unsure what I need to buy. Ideally I would prefer a clear solution rather than a coloured paint but do I need to find a way or acquire a product to remove the existing graffiti first before I apply the anti-g paint or coating. Or can I purchase a coloured paint which will cover the existing graffiti and protect going forwards. Finally if I acquire one of your products that isn't permanent does this mean I need to reapply every time I get another bout of graffiti. If I'm going for a permanent solution what is the cheapest solution as money is tight If someone wanted to call me my number is 07817449562 Matt