the back of the house is a flat roof extension, and some of the street have a slanted roof instead. our neighbours when they're drunk keep climbing on our flat roof to get into their garden. we've asked them to stop, but they seem to keep doing it. will this damage the roof, and is there any cheap solutions to the problem?
check out the diy shops for ways to protect your property (in a safe way) ie things to stop animals/neighbours getting up there, maybe some sort of wire? take a piccie of them next time they do it, and colour copy it and send out to 5000 neighours and there work place, that would be funny :)