We have a 100 year old brick building in Brooklyn. We have been told that the back wall needs repointing at a cost of $15000 to 20000. A building inspector told us that he doesn't advise repointing that there can be problems involved in it and it doesn't really need to be done. We are having leaks and he says it is more likely caused by leaky windows or some other issue. It should be noted that the inspector hasn't seen the wall yet. He is more opposed to it in principle. He also notes that the historic preservation commision might not approve of the manner in which it is done neccessitating having it redone at an even greater cost. Is it generally accepted practice that a brick wall does need to be repointed?