The mortar in our 25-year-old chimney is starting to crack and now leaks into our home if it rains hard. I assume we're probably in need of repointing, but a contractor that has done roof work for us ...
We've got a brick chimney that's ~25 years old and it's got a quite a few cracks in the mortar (some hairline, some as thick is a quarter). What's the best way to seal all those cracks? I assume ...