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tony dubois

  • Posts: 58
Render stains on brickwork
« on: January 19, 2015, 04:06:13 pm »
Can anyone help on this?

Have been asked if there is a solution to this problem.

Staining on brickwork below freshly rendered wall.

Brick acid has been tried but had no effect.

I believe the render used is Weber Pral M.

Image attached.

Thanks
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Kev Martin

  • Posts: 6954
Re: Render stains on brickwork
« Reply #1 on: January 19, 2015, 04:41:47 pm »
This is an Alkaline Product with additives so the additives are preventing you cleaning it with an acid.  Go over it with a stripper to break down the polymers trhen use an Acid Heavy Duty Cleaner

Kevin
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"Natural Stone Restoration Specialists" Tel: 0121 773 9129
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tony dubois

  • Posts: 58
Re: Render stains on brickwork
« Reply #2 on: January 20, 2015, 09:08:36 am »
Thanks Kevin

I will pass your details on to them.
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