The front door of this house in Scotland is built from charred cedar boards—a traditional way of fireproofing wood developed in Japan. In this case, the effect on the front door is likely more aesthetic than preventative, though you can never be too careful.  Photo 2 of 4 in getting knobby by Kate Reggev from Charred Wood Designs in Modern Homes

getting knobby

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The front door of this house in Scotland is built from charred cedar boards—a traditional way of fireproofing wood developed in Japan. In this case, the effect on the front door is likely more aesthetic than preventative, though you can never be too careful.