PVA stain on brick patio

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  #1  
Old 03-23-14, 06:36 AM
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PVA stain on brick patio

Hi everyone

Hoping someone on here will be able to help with this.

Last summer we had a huge party and one of my housemates made soms giant statues out of bamboo and paper mache. Against my advices they did this on the brick patio with only old newspaper underneath it so the pva/water mix inevitably soaked through and has left a large ghostly white stain on the brickwork. Unfortunately it rained this morning, and the stain cannot be see when wet so I cant yet include a photo, but would anybody have any suggestions to remove it? We've tried pressure washing, various household detergents and some paint remover for brickwork but without any success at all so far.

Thanks in advance
 
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  #2  
Old 03-24-14, 03:58 AM
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how are you defining ' pva ' - poly-vinyl acetate, poly-vinyl alcohol, or ? ? ?
 
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Old 03-24-14, 07:06 AM
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Sorry, I think it's polyvinyl acetate - you know the cheap craft glue school kids use? It's basicallly that. In the UK it's just called PVA Glue
 
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Old 03-24-14, 08:31 AM
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Have you don't any scrubbing along with the rest? TSP is a good stout detergent. You might try a product like 'oops' or 'goof off' They work well for dissolving dried latex paints, maybe they'd work with your glue.
 
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