help to remove lime marks on on new brick

llancayo

:eek: :eek: please could anyone give me some advice i have lime stains on the bricks on my house that was only built in 2005 can anyone give me advice how i can get this off the bricks as anyone else had the same trouble be very greatful for any replys

EasilyAggravated

leave it for mr rain to sort out. they will go eventually

millie100

Use a good stiff brush to brush it off. It`s caused by the moisture within the bricks coming to the surface carrying minerals with it,when the moisture evaporates it leaves the minerals behind which sometimes is a white crystalline deposit called efflorescence.
You can get cleaning agents from builders merchants which contain muriatic acid {nasty stuff} which you brush on but need plenty of water to rinse off .
It will only go when all the moisture comes from within the bricks.

chrisw

Our house is covered in it and it shows no sign of disappearing. The house was built 17 years ago and it was flagged up on the survey when we bought it 12 years ago. It would be impossible to remove it all and it has set very hard. All the other houses round about seem to have it as well so I'm just planning to leave it. It doesn't seem to have done any harm so far.

millie100

The bricks may be porus so they never dry out.You could try sealing the bricks with thompson water seal to prevent water penetrating the bricks.
It will not do any harm just looks. unsightly

Mr_Meanie

I’m guessing you mean efflorescence ?

“Efflorescence is a white powdery appearing deposit. It may appear from a light haze to a very heavy blooming. Or Water soluble salts, deposited as moisture evaporates, on the exterior of brick or concrete.”

If so you can use chemicals to help remove/reduce it but they may very well lead to more problems than you already have such as, staining or light/dark patches on the brickwork.

I’m 100% with Easily Aggravated here, let it nature do it for you, it could take 1, 2, 3 or more years and should gradually reduce but it may never totally disappear.

Kazonline

My house is over 30 years old and has a very unsightly stain as described in these posts. Unfortunately rain/time doesn't always rectify.