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pva stain, sandstone

Posted by Jeff Bradley on August 16, 2011 at 8:13pm in Landscaping

 

 

Evening all,

 

Turned out to be a lovely day in Cornwall after the rain this morning, also one of my guys is back after being an extra on Brad Pitt's new movie being shot in Falmouth. Once his head deflated a bit we got some work done, so all is good.

 

My problem, however, is that I have some pva/ cement slurry stains I need to get rid of from sandstone paving. Tried brick acid (paint on, scrub in, re-apply etc.) but no joy.

Does anyone have any suggestions or products that might do the trick?

 

Thanks

 

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Replies

  • Kieran Ray August 16, 2011 at 8:44pm

    Try Lifothin stuff, its expensive but good. Heres the link to the natural stone products page.

     

    http://www.lithofin-uk.co.uk/product_template_MN.html

  • PRO
    Jeff Bradley August 17, 2011 at 7:55am

    Thanks Kieran,

     

    Looks good, I'll give it a go this week.

     

    Jeff

     

     

     

  • Simon Smith August 17, 2011 at 5:14pm

    Be careful putting mortar acid on sandstone it can sometimes leave an even worse stain. Haven't tried the lithofin stuff but have used their tiling stuff and they make good products so should be good. Might be worth double checking with their technical support first though?

  • PRO
    Jeff Bradley August 17, 2011 at 7:18pm

    Thanks Simon,

     

    I have their number and will hopefully call tomorrow. Just a couple are affected so can be replaced if needed, but would be great to save the hassle!

     

  • Kieran Ray August 17, 2011 at 9:22pm

    I found out about Lithofin because I treated some sandstone with brick acid. It went rusty, as the acid can bring the iron content to the surface.  The old post is on here somewere, about 2 years old.  

  • PRO
    Jeff Bradley August 18, 2011 at 7:44am

    I found that old post that Paul suggested using lifothin, but I was unsure about the PVA aspect.

     

    The price of metal keeps rising so if it brings iron to the surface I might be able make some cash :)

     

    Thanks again guys 

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