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We have a chimney attached to the south side of the house, exposed to New England weather on the other 3 sides. Because (I assume) it often gets coated with ice in the winter, then blasted by direct sunlight, the freeze/thaw cycles have taken their toll. Does anyone have experience with a sealer product I can apply to the brick to retard the spalling?
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Apply a siloxane masonry sealer. It will repel water droplets but not trap vapor moisture inside the masonry. Should be available from any professional masonry products supplier under various trade names. Do not use standard acrylic sealers or paint.
*Bill, I don't have anything constructive to add except this anecdote related to me by a research architect. He claims that, in our northern climate, all masonry chimneys will eventually lean to the south. The north side of chimneys experience more freeze/thaw cycles than the south. Each time, some material crumbles and doesn't pack back to its original size, eventually ratcheting the chimney southward. Andy
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We have a chimney attached to the south side of the house, exposed to New England weather on the other 3 sides. Because (I assume) it often gets coated with ice in the winter, then blasted by direct sunlight, the freeze/thaw cycles have taken their toll. Does anyone have experience with a sealer product I can apply to the brick to retard the spalling?