Hi everyone and Happy Holidays... The mortar on the base of my chimney has dryroted to the point that I have a piece of brick missing. Much of the mortar can be removed just by scraping with a screwdriver. At this point I don't think it's a DIY project I would feel comfortable doing on my own. I would like to know if anyone has had a simular situation and what they did and how much it cost (ball park). The chimney base is on a cement floor, it is used for my oil burning boiler and has a stainless liner in it now.