If you have an older masonry chimney, it may need some attention. Quite often during my trips across oceans of asphalt shingles, I've observed loose and deteriorating conditions when I arrive at this rooftop soldier. And it's almost a sure bet the flashings will be loose, incorrectly installed, or missing altogether. Ideally, base flashings are attached to the roof deck (or boards) and counter flashing is attached to the chimney in the mortar joints. Installed this way, both the base and counter flashings slide past each other during expansion and contraction cycles but do not allow water entry. Another common problem with older chimneys is missing flue liners. The ceramic liners increase fire resistance against high temperature exhaust gasses developed from wood burning stoves, fireplaces, and central heating systems. As always, my phone line is open to your questions.

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