Re:- Advice

[MARBLE_TONY]

Re: - Advice

This is so common in white marble, one it is a natural product sitting outside! My thought would be Iron content in the stone with all this water the iron has probably been "activated" and caused the staining. Its a natural product at the end of the day and nothing you have done wrong

 

[jonnyc]

Re: - Advice

I think marble tony is near the mark.
i have seen this before but cant remember the cause.
plant pots do cause stains but they are easier to identify. tannin also stains stone outside but it would be more evenly covered over whole area i think.
i have seen strange discolouration coming through stone from base in past even if laid in white adhesive.
do you know what the base is made up of.
water does of course get in to marble /stone over a period of time even if sealed and this could cause a mineral migration in stone

 

[Diamond Pool Finishers]

Re: - Advice

just seen this thread,and yes i can confirm it is staining from plant-life rotting down over a period of time ,when we marblelight a swimming poo in white l iif its an outdoor pool and the winter cover is a bit late going on you have to make sure no leaves a left as they sink to the floor of the pool and break-down over the winter period and the end results are exactly the same, we also get hair slide's/clips rusting and the rust staining in white pools

 

[wayne]

Re: - Advice

Could it be from metal garden furniture rusting. Only asking as I have just laid stone on my patio and I have stains similar only on Indian stone

 

[peteablard]

Re: - Advice

just seen this thread,and yes i can confirm it is staining from plant-life rotting down over a period of time ,when we marblelight a swimming poo in white l iif its an outdoor pool and the winter cover is a bit late going on you have to make sure no leaves a left as they sink to the floor of the pool and break-down over the winter period and the end results are exactly the same, we also get hair slide's/clips rusting and the rust staining in white pools

Also known as a floater:lol:

Sorry, couldn't resist.........

 

[Diamond Pool Finishers]

Re: - Advice

eeeeeeerrrrrrr :lol::lol::lol:

 

[Tony73]

Re: - Advice

just seen this thread,and yes i can confirm it is staining from plant-life rotting down over a period of time ,when we marblelight a swimming poo in white l iif its an outdoor pool and the winter cover is a bit late going on you have to make sure no leaves a left as they sink to the floor of the pool and break-down over the winter period and the end results are exactly the same, we also get hair slide's/clips rusting and the rust staining in white pools

I agree here, also seen some tree with purple berries falling on limestone and staining badly.