Has anyone else had issues with some of their exterior brick crumbling? With the freezing/thawing, I've had some small chunks fall out of place on some of the exterior walls. I had Peter Strickland apply sealant when he painted my house, but there's still a problem. ...and with that, I need recommendations to have my chimney repaired where it meets the roof. I have some of the old brick and an extra roll of roofing material. Probably needs new flashing?