Help with Stencilcrete

audsharpo

Hi
ive just had stencil crete done in my garden but its covered in white patches. and looks terrible. it looked fine before the sealer went on it but the next morning it was covered in white patches. Does anyone know what could have caused this and how to fix it.

*Derek*

audsharpo wrote: »

Hi
ive just had stencil crete done in my garden but its covered in white patches. and looks terrible. it looked fine before the sealer went on it but the next morning it was covered in white patches. Does anyone know what could have caused this and how to fix it.

It must have been wet or damp. That is moisture coming up under the sealer..

Martron

withot seeing it i would guess its this

http://www.ibstock.com/pdfs/technical-support/TIS-02-Efflorescence.pdf

i know this is brickwork but it happens to concrete. i would not worry too much about it as if you driving on it it will wear off pretty quickly

audsharpo

*Derek* wrote: »

It must have been wet or damp. That is moisture coming up under the sealer..

derek,
will another coat of sealer fix this

i thought it might be that or salt coming through but i scrubed a patch with water and that didnt shift it so i guessed then it wasnt salt. it doesnt wipe off at all.

Matron, its not that, have that on my garden walls and its just like powder it rubs off. plus its my back garden so not as much traffic as front

*Derek*

audsharpo wrote: »

derek,
will another coat of sealer fix this

No, it will be still under sealer. The right process is to remove sealer with xylene and start over. What i suggest you could try is powerwash the surface and let it dry thoroughly. Then seal it. Might work.