Due to a hail storm I had to have my house re-shingeled. The crew did an awsome job, but I didn't like the fact that they painted the flue pipe. How long will the paint last? There are two flues. One is for the fireplace on first floor and one is for the woodstove in basement. The flue pipe for the woodstove is stainless and about 2' is exposed. I don't think it should have been painted. Any thoughts? Thanks!