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Just learned creosote turns into glaze at 2300 degrees
Was reading through NFPA 211 after a close call on a job in Columbus and found out that third-degree creosote actually vitrifies into a glassy glaze when it hits 2300 degrees. I always thought it just burned off. Has anyone else run into that stuff that's almost impossible to scrape?
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the_paul8d agoMost Upvoted
Yeah @oscarw83 ever try hitting that glaze with a torch before scraping?
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lily_singh28d ago
Honestly yeah that glazed creosote is the absolute worst. I've seen it in old chimneys where it looked like black glass stuck to the flue tiles. Tbh you basically need a chipping hammer or a rotary drill with a wire brush to even dent it. Ngl I've had jobs where we just had to reline the whole thing because scraping was pointless. It's wild how much heat it takes to make that stuff turn into literal glass.
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