Block Paving

[racket]

Hi All,

I had some block paving done about 3 weeks ago and I have just noticed that there is a white chalky deposit forming on top of the blocks and up the front of the step, can somebody tell me what it is and how to remove the stuff?

Cheers

 

[snico]

It is known as efflorescence, its basically calcium carbonate and some salts from the manufacturing process. It should wash and wear off after time

 

[racket]

Cheers for the info,
should I jet wash it off and then seal the blocks? would this stop it coming again?

 

[Thermo]

no it will keep coming for a wjile. just brush it off.

 

[HERTS P&D]

Making it wet, it will just soak back into the bricks/blocks.

You will need to brush it off. As said above.

Andy