[gwrightson]

can any one advise me on the best approach to remove from brickwork  on the outside walls of some houses.

I recently power washed a large area of block work in a commune area and a number of the buildings have large areas of salt showing from the bricks, they are to the best of my knowledge engineering type bricks and was asked if i could power wash them to improve. i said i didnt think it would improve them but would try and yes very little difference after trying.
So basicly, is their some approach i could take to improve these as i would likely get the job of cleaning them.

tks Geoff

[Alan McTernan]

How old is the building as efflorescence normally goes after 6-12 months!!!

Heat or efflorescence remover should do the trick but it may well come back depends on the quality of the bricks

Regards
Alan

[gwrightson]

Alan,
tks for your reply, and yes i would have thought this could  have been a problem on new er bricks , however the buildings in question are prorbley around , at a guess 25 yrs old,   I will try and take a pic when I am next passing.

Another point that may be effecting them is that the affected bricks all tend to be where overflow pipes come from the wall and at some point have had water running down them.

Geoff

[Alan McTernan]

Geoff,

Are you sure it is not water stainage then? Photos would be handy

Regards
Alan

[Simon@ Clearview contractors]

Short and sweet, brick acid.

[spongebob]

This is limescale from the overflow pipes not salt. so as s.walker says brick acid is needed.