attic mold

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  #1  
Old 07-04-13, 09:41 AM
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attic mold

Frame, two story home in Rochester, NY. Generally, a pretty dry atmosphere. 2nd story attic ventilation is suspect, but my first question is killing existing mold on roof plywood sheathing. There is no visible mold on the ceiling insulation and any structural members, only the sheathing, but it's on probably 90% of it. No obvious odor, but I want to kill it all...
I see two options. A fogging product, or the old fashion tank sprayer with bleach/water. Is there any opinion on the fogging products vs bleach? As a long time FL resident, I've got lots of hours spraying down wood and masonry exteriors, but never attempted an attic job. I think I have pretty good access to the sheathing, good headroom, but having to clear some insulation to walk on joists may be challenging.

I should add that I say MOLD, but I may have MILDEW. It's black, but is close to a discoloration, rather than a fuzzy growth.
 

Last edited by telecom guy; 07-04-13 at 09:56 AM.
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  #2  
Old 07-04-13, 11:01 AM
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I've heard two different thoughts on Bleach, one being it's useless and dangerous in small spaces, and the other (mostly online) saying it works mixed with (select the authors product of choice).

Personally I don't like working with bleach, and could be a bit concerned about getting your attic insulation wet.
 
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Old 07-04-13, 03:55 PM
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Lack of ventilation, leaking roof, ice dams all things that can cause mold.
Any pro exterminator would first suggest addressing the issues causing it.
Any I know would then use a product like Timbor or Bora Care to treat it. Google them.
 
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