is this dry rot or insect damage??


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Old 09-19-10, 06:37 PM
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is this dry rot or insect damage??

corner of window on exterior. window is leaking water into the house. dry rot? carpenter ants?

picture taken after I already cleaned it up a bit and sucked out the debris.

 
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Old 09-19-10, 06:59 PM
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Dry rot is a common misnomer. Looks like decay / wet rot to me, which is only caused by a combination of water and fungi. Ants are attracted to deteriorated wood, but they chew tunnels and you'd have obvious holes in the wood.
 
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Old 09-19-10, 07:03 PM
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thanks for the reply. so no need to tear the wall apart to kill an ant nest?? i didn't see any ants or tunnels/holes.

so this decay is just caused by the wood getting wet over and over for many years?
 
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Old 09-19-10, 07:09 PM
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That would be my opinion. Wood sucks up water mainly from the end grain, like a straw. So the cut end of the wood is usually where problems like that always begin. Like where the wood sits on the aluminum, where a notch was cut in the wood, or where nails/screws gave water a pathway to penetrate deep into the wood. Unfortunately all these things are common near the bottom of door and window jambs. Even if you would have kept it all primed, painted and caulked, it can still happen.
 
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Old 09-19-10, 10:24 PM
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