Dried on cement

[weekendhobby]

I've got a fairly new(about (1.5-2 years old) wall which I did not clean up (properly) after building it . The bricks are now white I guess from the cement residue. I recently tried brick cleaner but this did not help, It is possible to get this residue off now, and if so how ?

Thanks

[David Lang]

Hi

Sounds more like effervescence than cement residue, especially if brick cleaner didn't shift it.

brushing or just leaving it until it goes.

Dave

[bigcat]

sounds like salt. Should clear on its own in time. Brushing should make it go quicker if theres enough of it to brush some off.

NT

[Huge]

Efflorescence.

1. The deposit that results from the process of efflorescing. Also called bloom. 2. The process of efflorescing. 3. A growth of salt crystals on a surface caused by evaporation of salt-laden water.

Not "effervescence", which is fizzing ...

[weekendhobby]

I assume this is made worse by the fact that the bricks are used to hold earth back, and therefore constantly subject to water.

[The Natural Philosopher]

I am surprised that brick _acid_ didn't clear it.

Does mine.

But if its a salt other than insoluble carbonates, just water will get it off.

Pressure wash it.

[David Lang]

Hi Huge

I stand corrected. This computer can't spell!

Dave