What would You use to get this oxidation out of this brick?
I presume that this is chalky oxidation from the aluminum(?) siding above it.
I would concur with that. I use F9 barc on that. Have used OneRestore too.
I’m not being cheeky.
Noob still here, but wouldn’t there be a chance of making the brick a lighter color? Would f9 efforecence remover be better?
Definitely BARC. It’ll take a strong mix and some scrubbing with a brush. Had a house two months ago with the same issue.
No issues with either chemical, like @dcbrock said, use a brush. Should come out fine.
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F9 Barc put on straight, scrub, pressure wash.
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I bought some BARC three years ago not long after I began this business and was unimpressed. There’s a good chance that I was just overwhelmed back then with information overload and the steep learning curve. I’ve never tried OneRestore and will certainly get a gallon of that as well, One thing I have added to my arsenal since @Racer turned me on to it last Christmas is aluminum brightener. It works well on siding oxidation but requires brushing just like the BARC.
If indeed I DO go out and attempt this feat I’d like to have several different weapons because nothing quite sings like walking away from a job because one fails to have the right chem on the trailer. I WILL report my results if it happens.
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I used F9 on a concrete patio with rust stains from wrought iron furniture, did a very good job.
Oxalic acid. It must be diluted if powder form. Put on let dwell for 20 mins than wash off
Use much OA? I go through almost 100 lbs. a year. Good for rust stains, brightening and neutralizing pH on decks, as well as brightening concrete but I recently discovered that aluminum brightener (Thanks @Racer once again) is so much more effective on vinyl that if you put it on and look away, you won’t know where the stain was. More expensive yes, but time is more expensive yet.
I’ve never known OA to be very effective on oxidated paint. Maybe it could break the bonds that cause it to adhere to the brick.
I certainly dont use oxalic in volumes but i have used it on brick dealing with oxidation runoff from metal
Around here, the rust on brick comes primarily from the iron in irrigation water, It’s pretty effective for that. I found some of that BARC that I bought several years ago in my shop today, and may very well try it out again on those stains. If so, I’ll be sure to report back.
@MrSparkleVA definitely try one restore. It has worked on so many inorganic stains I’ve tried it’s incredible and you apply straight. I think it’s way better than barc. Sh, one restore, and cleansol bc will cover just about anything not involving oil.
