I read with great interest “Can Mold Give You Headaches?” by Mac Pearce (2/10). I have a similar headache to fix on a 13-year-old house, all because the vinyl siding installer didn’t seal one of the J-channel openings between the pair of windows, nor did he install the diverter flashing behind the siding at the window corners. (I still have a JLC article from June 1997 that shows how to do it correctly.)

I’ve included some pictures (above) and would appreciate Mac’s comments. I plan to remove the siding, replace the rotted OSB sheathing, and simply spray the framing members with bleach, since there’s hardly any damage to them. I will then replace the OSB with plywood sheathing; install new insulation, siding, and the diverter flashings; and...

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