I have a 25 yrold log home the manufacturer always recomended CWF.I now have Black mold on the east side and north side
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I believe CWF is a plant oil based product (linseed oil, etc.) which causes this. you can avoid the black a little by giving the home a bath a least once a year, twice is better. It will need to be stripped to get rid of the black at this point. Call Mike at 866-670 -3020 for more help.