2007-01-28 00:40:29 · 11 answers · asked by Tib F 1 in Home & Garden ➔ Maintenance & Repairs
these are natural salts leeching out of the bricks.i worked in a brick works and something was put in the mixer to eliminate this.sometimes some gets through, hence the white deposits. weak acid can remove this or if we had complaints from house builders someone would go round with wood dye of a similar colour. you get it mainly in new builds as the bricks are new .in time it decreases.
2007-01-28 07:59:08 · answer #1 · answered by bex59uk 2 · 0⤊ 0⤋
Bricks are made of clay, if this clay is taken out from some land full of salty area or the water used to make the bricks or the water used at the time of construction had salt in it, this dissolved salt when get water again by moister or by rain in the brick, comes out over the surface of the bricks when the brick gets re-dried.
Its solution is to rinse the brick with more water for long time so the salt flow out.
I've seen in above answers some people have answered it as lime that is not true, as lime once get wet don't dissolves in water again. So lime cannot come out at the surface of the brick.
It is definitely salt.
2007-01-28 01:19:40 · answer #2 · answered by Ishfaq A 3 · 0⤊ 0⤋
Its known as Bloom ,usually on new brickwork is the release of lime from the mortar.
Also,efflorescence.
Salts,present in most building materials appears out of solution as new buildings dry.
.
2007-01-28 00:51:51 · answer #3 · answered by Anonymous · 1⤊ 0⤋
It is some kind of salts which comes out of the bricks. It could be removed with acid brick cleaner but take care.
2007-01-28 00:49:20 · answer #4 · answered by little weed 6 · 0⤊ 0⤋
It is caused by moisture trying to come out from behind the brick. I'm not sure how to spell it but it is called efflorescence. There is a product that removes it but it cost. Check your local Brick retailer or commerical building supplier.
2007-01-28 01:45:03 · answer #5 · answered by fire10c 1 · 0⤊ 1⤋
Salts washing out of the bricks.
2007-01-28 00:46:17 · answer #6 · answered by jayktee96 7 · 0⤊ 0⤋
it is esserverent salts ..if you rub it and taste it they are salty ...trust me ..they wont kill you ..it is normally caused when the wall gets wet before it has dried out after it has been built .. if you leave it then it will go away but it will take time ..if you use acid you may damage the face of the brick try a hose and a scrubbing brush
2007-01-28 01:54:37 · answer #7 · answered by boy boy 7 · 0⤊ 0⤋
It could be salt from the actual bricks or it could be a sign of moisture.
2007-01-28 00:50:27 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Is it lime?
A lot of bricks contain it and it does tend to come to the surface.
It's the same stuff that they used to use for painting lines on football pitches until they discovered the damage it can do if you get it in a cut.
2007-01-28 00:46:41 · answer #9 · answered by chip2001 7 · 0⤊ 2⤋
Salt out of the bricks, you can jet wash it of in summer.
2007-01-28 01:16:36 · answer #10 · answered by KEITH M 2 · 0⤊ 0⤋