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Topic: Brown staining, Brown streaks down front of render< Next Oldest | Next Newest >


Group: Members
Posts: 1
Joined: July 2019
Posted: 09 July 2019,09:52 QUOTE


Had some rendering work done on walls in garden in limestone white

They have been topped off with Indian stone.  During periods of heavy rain I seem to get a brown streak down the render - only in one place at the moment.  Is this related to the mortar used to lay the stone on the top of the wall or the stone itself.

Tried scrubbing with water/soap but doesn't shift it

Any advice would be appreciated on what I can do to reduce/remove the staining

Wondering if it might be Manganese staining ?
Do you think its worth using a solution of oxalic acid to try and remove the stain




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Tony McC

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Group: Moderator
Posts: 11097
Joined: July 2004
Posted: 11 July 2019,10:06 QUOTE

Could you get a photie for us?

Render and walls aren't my field of expertise, but we do have some under-utilised brickies and the like lurking around the Brew Cabin.

Site Agent - Pavingexpert
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1 replies since 09 July 2019,09:52 < Next Oldest | Next Newest >

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