I was soft washing a mobile home today. It turned out alright but there were some black stains on soffit board that I wasn’t able to remove with SH. I tried my usual house wash, I tried 12% directly on stains I tried brushing them - nothing worked. Guy was happy with the outcome but I wasn’t. Does anybody know how to get them off the vinyl?
I got two guesses – guesses. One, there is a bathroom exhaust venting through the soffit on that side (or a trailer furnace). Two, there is an interaction occurring with the baffles and the soffit.
Only saw one part of the trailer so that is my guess. “If” they exhaust anything through their soffit, bathroom exhaust fan, dryer, kitchen stove fan, furnace, or hot water heater, the greases and or soot may not come off with SH. I hope they aren’t exhausting through their soffit, it can cause issues. T
My guess is the trailer dealer was near a manufacturing/industrial area and the natural attic intake/exhaust sucked that dirty air in over the years and left that nice design there. I’m assuming the upside-down V pattern aligns with where the rafters sit.