How To Remove This Off Brick

HighTide

HighTide

New member
Cleaned a vinyl house the other day that had a brick front. These stains were across the lower front of the bricks, I assume from the sprinklers. After cleaning the whole house, I tried Oxalic acid on one section and SafeRestore on another section and let dwell 15 minutes. Then tried to muscle it off on the areas treated and nothing worked. What is this and what will be required to get it off? Thanks for any advice!
 

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It looks like hard water stains. Bad ones. One restore will get it but it takes full strength applications, with 5 minute dwell times. Then pressure off in a downward angle. Repeat till its gone. I've had some that took up to 6 applications but it eventually comes off.
 
Doug Rucker said:
It looks like hard water stains. Bad ones. One restore will get it but it takes full strength applications, with 5 minute dwell times. Then pressure off in a downward angle. Repeat till its gone. I've had some that took up to 6 applications but it eventually comes off.
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I used One Restore (SafeRestore) and applied it full strength and let it dwell 10-15 minutes then pressure washed. I didn't see any difference as it all reappeared after it dried. The gel might have stayed on the wall better.
 
Benchmark said:
It looks like efflorescense or calcium deposits and Eaco-chem makes a product for both of them. But if one-restore after 15 min dwell time didn't touch it it sounds like calicum deposit get some calcium presoak or white scum presoak both from Eaco-chem.
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Thanks Aaron. I will email these pics to Eaco Chem and see what they recommend. Fortunately, I don't see this that often but would like to be able to knock it out when I do.
 
Steven Button said:
OneRestore Gel... you want some? I've got a few gallons lying around ... :-/
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Steven, I remember some time ago about you having a large need for so much OneRestore gel. What was the project and how much do you have left?
 
Calcite is extremely hard and nearly impossible to remove. For projects like this you'll need to either mineral blast it with a product like max strip (kieserite) or use a colored sealer to cover it up. At this point in our business we use v-seal 102v4 penetrating sealer with a color tint and very lightly mist the whole thing. It will cover up the calcite, blending it in and also seal the brick. This is the easiest way we have found to meet our primary objective of making the contaminant disappear. It's a bit of an art but once you get it it's a lot easier than mineral blasting or using chems that don't work.
 
HighTide said:
I used One Restore (SafeRestore) and applied it full strength and let it dwell 10-15 minutes then pressure washed. I didn't see any difference as it all reappeared after it dried. The gel might have stayed on the wall better.
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I have tried that way too, I found the key is 5 minute dwell times. One application followed by another 5 minutes later
 
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