Raised by Declan52  in my blog here: Thought it might be useful to discuss this more widely.   We have lead covered skews as our verge treatment. Not being aware of the product or the requirement for it, I asked the question and established that Patination Oil wasn't applied during installation primarily because it doesn't tend to last long up here due to the prevailing weather.  Having discussed it with a few people through the course of the day, there is a definite split of opi