I am not an inspector but was impressed by the information I found on this site with just a simple google search. I had a chimney expert come to my home today because I have a "rusting effect" on my shingles and was concerned about resale issues should I choose to move. The explanation I got was about the condensation of gases and a detailed account of how when you replace a boiler with a more efficient one (I did), your gases aren't as hot and so it is more prone to this issue. When I asked about replacing the flue with another cap, and cleaning up the stain, I was told this would not be possible because the connection to the top would not be the same manufacturing fit, and to clean the shingles would void the warrantee. So, the solution (might) be to relace the entire piping, put a new flue on top. Is there any other possible solution? I'm looking at a significant expenditure (and construction within my home to remove the old piping) and am out of work. Please excuse any improper terms - I'm clearly a novice, but could use help and advice. THANKS!!!
