Need help on dealing with efflorescence (white) on bricks

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Old 11-12-15, 06:58 AM
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Need help on dealing with efflorescence (white) on bricks

Hello everyone,

I always appreciated the fact that one can post in such a forum and get good advice / ideas, as it has been proven many times over.

Here is my problem:

I live in Queens, NY to give you ideas about my seasonality. About a year ago, a new walkway + stairs was made in front of my house. It is composed from bricks + bluestone slabs on top of them. The bricks are just for support of the structure.

Few weeks ago, a crew came in to "clean the bricks" as that was never done after the construction was completed. They used muriatic acid, washed it off and then later on the same day came back to "seal / protect" the bricks they applied Drylock Concrete Protector.

DRYLOKŪ CONCRETE PROTECTOR - DRYLOK Masonry Waterproofer

Everything looked great after they were done. However, the very next morning, I saw this (please see photo BRICKS-1). That kept increasing to the point that a few days later, I myself repeated the whole job (muriatic acid (diluted 10-1), washing it off after five minutes with my 125 PSI water hose and then re-applying the same Drylock after waiting 24 hours to do so after the wash. There was no rain in between and the weather outside was 60F+ when I was applying the Drylock. Photo BRICKS-2 shows how it looked two hours after I was finished. There was no rain for 36 hours afterwards so it had ample time to dry.

The bad news, in less than 48 hours -- the efflorescence re-started. I decided to takeoff the Drylcok (again with diluted muriatic acid & wash-off) and leave things alone. We have now had a couple of rains and the last photo (BRICKS-3) shows how this spot looks one week later.

What can I do next Spring to try to rectify this problem? I don't want to paint the bricks, but I am very frustrated by this whole thing. Just so you know, there are maybe 80-90 more bricks total that are used in the walkway/stairs, so this is not like trying to deal with a whole house full of bricks.

Any and all advice is very much appreciated!
 
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Old 11-12-15, 07:59 AM
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I've had that problem before. Muriatic Acid doesn't do the job. I was doing a job at the Queens Nassau border so I went to Presti Stone, in Freeport. They sold me some masonry detergent called Sure Klean. It might have to be done a few times but does a better job. Mix it with water, let it soak & use a stiff brush before you rinse it. Protect your hands & eyes. It's heavy duty stuff. If you find anything better than that, let me know.
 
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Old 11-12-15, 08:38 AM
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I have a 6 or 7 year old brick porch very much like your's. I have the same problem every winter, the colder it is, the worse it is. As I understand it, it is caused by moisture from within the structure flushing salts and minerals out to the surface. I don't know if there is a cure short of isolating the footing from the soil and ground water or maybe heating the hollow space under the porch. You can wash it off but then you're just adding more water to the situation and sealing from the outside won't help. I'll be watching this thread to see if the pros come up with a fix.
 
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Old 11-15-15, 01:27 PM
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prosoco's the bomb - used by pro's - P R O S O C O
 
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Old 11-15-15, 03:04 PM
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Looks like some very good product. Residential BricKLEAN
 
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Old 11-15-15, 03:45 PM
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prosoco's the bomb - used by pro's - P R O S O C O
I mentioned that 3 days ago. Post #2. It's called Sure Klean.
 
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Old 11-16-15, 02:42 AM
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& you're 'zactly right, pulp,,, too bad the original jabonies didn't have your knowledge/experience
 
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