 and that could actually accelerate the deterioration of the chimney itself. So if you use a good quality silicone sealer that's vapor permeable, it can slow the absorption of moisture into the chimney, but I'm just not sure you need it. The kinds of things that you're talking about doing, except for the total restuckling of the chimney, I don't know if I would have gone that far just to repair a crack. But the other things that you're talking about are all entirely expected, having to repoint some mortar, having to repair a cracked chimney cap,