Rotting wood

My Dad and husband have a disagreement on rotting wood. If wood is rotted on a 1ft. square portion of the roof, will it continue to rot, even after the leak has stopped, and a metal roof is installed? Thank you, Lorraine
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Tomyslady wrote:

no. dry it out and the rot will stop.
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The other question would be "Is there enough solid wood left to hold nails and keep the new shingles in place at that location?"
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There is also dry rot. Rot is caused by an organism or plant that eats wood - celulose, household bleach kills molds, spores, by removing oxygen. So if the water is stopped kill whats there with bleach, so both may be right to an extent, spray from both sides.
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m Ransley wrote:

dry rot is something of a misnomer. the moisture content of the wood needs to be elevated for the fungus to survive (something like 20% mc). the moisture content of wood framing protected from rain will depend on the climate, but unless you live in a rain forest, it is well below 20. on a roof where the sun beats on it i bet it's below 10%.
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m Ransley wrote:

Chlorine bleach is bad for wood. It destroys the lignin.
Use antifreeze and borax instead to kill the mold sporeds and permanently treat the wood:
http://www.acbs-bslol.com/Gadgets/D97WoodRot.htm
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why not replace the 1 square foot portion if a metal roof is going to be installed?
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