Coffee Mark On Paving Slabs

[hammerman]

We have a dried coffee stain on our indoor fire hearth which are a buff coloured paving slab.

Not done anything to get it off yet....thought i'd talk to the masters first !!!

Any suggestions.

Ta

HM

[Old_Geezer]

Yuk. Were it outside I'd suggest a power jet washer. I take it you can't move it outside ? Bit wet for indoors though. Failing that, coffee is biological. Can you rub biological washing powder (disolved into a paste of course) into it and leave it for say, 24 hours ?

[ChillDoubt]

Nail varnish remover?

[Frank97]

I'd just try some water and washing-up liquid first, before trying any chemicals.

[mallyh]

try wiping it with quite a wet cloth

[hammerman]

Ok, given it 2 scrubs (letting it dry in between each one) and it's not really made an impact.

anything else.....dare i say bleach or would that ruin the whole slab

[mallyh]

patio cleaner

[Chipchopper]

Try some ordinary washing soda, in a solution of warm water.
Allow to soak for 30 mins then scrub with a nail brush or old tooth brush.

[rowanwitch]

if it has penetrated the stone try a fine grade sand paper to take the affected area away remember to wear a mask though

[Old_Geezer]

Penetration is why it occurred to me that washing powder might also do so ate eat the coffee ? Or was that wishful thinking ?