Hi folks-
Had the local chimney sweeps out today. They did their routine inspection and came back with a few things "wrong" with the chimney that they could take care of me.
The one that I need help with is the brick/mortar sealant. According to the chimney guys, I've got some spalling going on, and the bricks and mortar need to be resealed. He cautioned against using "typical silicone sealants" because he says those trap some moisture inside the bricks, and when the chimney heats up, the trapped water can cause real damage. Instead, he said that the right product is a water based sealant that will repel new water but allow the moisture inside to breathe.
Something might have gotten messed up in the translation, but basically his point seems valid. The chimney is 35 years old, after all, and to the best of my knowledge, hasn't had any work done on it other than the occasional sweeping.
Any thoughts as to what products are available to DIY-er for this purpose? Looking for specific recommendations if possible.
Thanks in advance!
Marc