Sprayed the fence down with 12.5% bleach today using the downstream injector. Had to go over the thing three times with bad results. First buckets where 3 gallons of bleach 2 water, simple cherry, gutter grenade. Finally got tired of having to keep going over. So I put straight bleach in a plump sprayer. Sprayed the fence off then rinsed. With better results. Not 100% happy with it. What do you think it is? What do you suggest?
Here’s the pictures.
Do you have any before pictures Justin?
I would try the f13 on the streaks.
It’s very possible that the fence needs painting…
Justin,
Looks to me as it may be mildew starting under the paint, where moisture has found away in, or the wood was not cured well prior to painting.
Here’s kind of a After and Before picture. The board closest to me has already been cleaned. The boards more in the woods have not been cleaned yet. They actually look worse then most of the fence because the more tucked in the woods. The have more of the green mildew.
Justin,
Did you try just using the pressure washer by itself. The solution formula you use is the exact I use, but Never used it on wood. But it sounds like what they said above.
Micah f13 can be sed on paint?
It is formulated to clean painted gutters.
Properly diluted F-13 removes the oxidized paint on gutters and the stains with it. In this case it looks like the mildew is under the paint. You’re not going to get it looking brand new but strong sodium hypoclorite and plenty of dwell time will kill a lot of it and improve the appearance as well as prolong the life of the paint.
you’re having trouble getting it off because that’s not mildew. It’s algae. black and green algae. that’s also the black streaks you see on asphalt shingles. a lot of shingle companies now put algea stuff on their shingles to prevent it’s growth.
with the correct cleaning solution it comes off pretty easy,
paint also doesn’t last forever. some of that black area could just be the wood rotting under the paint. I’d say they need a new coat of paint too.
A little bleach, dawn dish soap and water in a pump sprayer.
Justin actually used a lot more effective mix. He used 12.5% sodium hypochlorite, simple cherry as a surfactant, and applied using an 8 GPM pressure washer with a downstreamer injection.
My guess is the paint is failing and needs a repaint.
I’m sorry but from what I see in the pic a little bleach and soap all is good.
Justin already tried that, and it did not work. What would your next step be?
Welcome to WCR, btw.
A stronger mix.
Thanks for the welcome We Wash Windows.
