Better yet, how do I “get it gone”? 2%?-nope. 6%? negative. Oxalic? Nein. EBC? Net.
Whiskey,Tango,Foxtrot. I’m wondering if it might be from tar paper.
It’s rotted…needs painted.
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So, rotted up behind the window trim? I can’t say I’ve seen this before.
If its tarpaper, Id try the double eagle.