White stain on brickwork..

[mondyman]

I've just finished building a wall out of 4" rockface and on one course about 6 up for about 6 bricks in length this ugly white stain has seeped out .
It's started to calcify now , i tried a wire brush on it today but cudn't shift it. My mate reckons it's due to a bad batch of sand and its called effervesence ( not sure if i've spelt that right )

Anyway , does anyone know how it can be removed , i dont think a jet washer is going to do the trick....i have been told to use brick acid but where the hell do i get that from...
Any replies gratefully received , im open to suggestions...

Cheers Mondy

 

[Thermo]

its the salts from the mortar leeching through, happens on most new brickwork or paving to some degree. it will fade or can be removed with a stifff brush. dont jet wash it. personally i wouldnt use brick acid either, may well discolour the walling permanently

 

[mondyman]

i've tried a heavy duty wire brush and it barely touched it , as its our front garden wall it looks real unsighlty which is the main pain in the ass...

how powerfull is brick acid as i might have a ganders at that,,,

Cheers for reply therm