seano44 Posted June 11, 2012 Report Share Posted June 11, 2012 I have just been up in the attic and found patches of a white substance on some of the rafters. If you rub it with a cloth it comes away like chalk dust. Is it white mold and whats the best way of treating it? Quote Link to comment Share on other sites More sharing options...
kurt Posted June 11, 2012 Report Share Posted June 11, 2012 Maybe. Wipe it off. Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted June 11, 2012 Report Share Posted June 11, 2012 Or not. Quote Link to comment Share on other sites More sharing options...
hausdok Posted June 11, 2012 Report Share Posted June 11, 2012 Get a gallon of BoraCare, mix it with a gallon of water and then go up in there and apply a light spray of BoraCare to the rafters and the underside of the roof deck. Make sure you're attic is well ventilated. Go on with life. ONE TEAM - ONE FIGHT!!! Mike Quote Link to comment Share on other sites More sharing options...
John Kogel Posted June 11, 2012 Report Share Posted June 11, 2012 Older house, shiplap sheathing, could be concrete dust. Quote Link to comment Share on other sites More sharing options...
hausdok Posted June 11, 2012 Report Share Posted June 11, 2012 Older house, shiplap sheathing, could be concrete dust. That's true. Lots of old houses around here have the form boards recycled into the attic and they are covered with not only concrete but many have a layer of white efflorescence at the rim of the water stains. ONE TEAM - ONE FIGHT!!! Mike Quote Link to comment Share on other sites More sharing options...
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