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Simon@Pristine Pathways

  • Posts: 397
how do i totaly remove black spots from indian stone?
« on: June 08, 2011, 06:39:11 pm »
can anyone help with this? thanks
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Kev Martin

  • Posts: 6954
Re: how do i totaly remove black spots from indian stone?
« Reply #1 on: June 08, 2011, 07:00:16 pm »
Post some photos or tell me what you think the spots are

Kevin
MLL
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"Natural Stone Restoration Specialists" Tel: 0121 773 9129
www.tilinglogistics.co.uk | www.marblelife.co.uk  http://stores.ebay.co.uk/Tiling-Logistics

drive surgeon

  • Posts: 2812
Re: how do i totaly remove black spots from indian stone?
« Reply #2 on: June 08, 2011, 07:08:15 pm »
lichen!!!   heat or hypo if turbo wont shift!
 ;)
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Alan McTernan

  • Posts: 574
Re: how do i totaly remove black spots from indian stone?
« Reply #3 on: June 08, 2011, 07:29:57 pm »
Quote from: drive surgeon on June 08, 2011, 07:08:15 pm
lichen!!!   heat or hypo if turbo wont shift!
 ;)

What ever you do don't use a Turbo on Indian Sandstone  :o

Give me a call and i will try and help ;)

Regards
Alan

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Simon@Pristine Pathways

  • Posts: 397
Re: how do i totaly remove black spots from indian stone?
« Reply #4 on: June 08, 2011, 08:31:47 pm »
it is defo a lichen, but finding it on more and more jobs and its getting harder to remove.
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Alan McTernan

  • Posts: 574
Re: how do i totaly remove black spots from indian stone?
« Reply #5 on: June 08, 2011, 09:06:54 pm »
Quote from: C-Y-D on June 08, 2011, 08:31:47 pm
it is defo a lichen, but finding it on more and more jobs and its getting harder to remove.

Call me then ;)
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clarkson

  • Posts: 1026
Re: how do i totaly remove black spots from indian stone?
« Reply #6 on: June 08, 2011, 09:53:29 pm »

 hi
 i have also seen hypo react with natural stone. some of it has veins of metal ore that stain.

patio cleaner is even worse. i got called to meters of stone once all got brown stains where the chemical had landed. looked like wee on carpet.

 cheers

 john
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BDCS

  • Posts: 4777
Re: how do i totaly remove black spots from indian stone?
« Reply #7 on: June 08, 2011, 11:45:08 pm »
That sounds like fertiliser on the stone
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JSMC

  • Posts: 3511
Re: how do i totaly remove black spots from indian stone?
« Reply #8 on: June 15, 2011, 10:23:31 pm »
Quote from: clarkson on June 08, 2011, 09:53:29 pm

 hi
 i have also seen hypo react with natural stone. some of it has veins of metal ore that stain.

patio cleaner is even worse. i got called to meters of stone once all got brown stains where the chemical had landed. looked like wee on carpet.

 cheers

 john

so hypo a no no then ?
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Blast Away

Re: how do i totaly remove black spots from indian stone?
« Reply #9 on: June 15, 2011, 10:33:19 pm »
Quote from: JSMC on June 15, 2011, 10:23:31 pm
Quote from: clarkson on June 08, 2011, 09:53:29 pm

 hi
 i have also seen hypo react with natural stone. some of it has veins of metal ore that stain.

patio cleaner is even worse. i got called to meters of stone once all got brown stains where the chemical had landed. looked like wee on carpet.

 cheers

 john

so hypo a no no then ?

Never had the mentioned problem. Need a strong mix on indian stone to soak into them, use a fan lance and they'll vanish fast. 10-15 mins dwell.
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Alan McTernan

  • Posts: 574
Re: how do i totaly remove black spots from indian stone?
« Reply #10 on: June 16, 2011, 06:53:02 am »
Quote from: Alan McTernan on June 08, 2011, 09:06:54 pm
Quote from: C-Y-D on June 08, 2011, 08:31:47 pm
it is defo a lichen, but finding it on more and more jobs and its getting harder to remove.

Call me then ;)

I do try to help :'(
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Simon@Pristine Pathways

  • Posts: 397
Re: how do i totaly remove black spots from indian stone?
« Reply #11 on: June 16, 2011, 07:06:23 pm »
i must be only person who dosnt use hypo, where is the best place to get it? and what is the mix?
Alan tried phoneing you a couple of times you never answer!!
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Alan McTernan

  • Posts: 574
Re: how do i totaly remove black spots from indian stone?
« Reply #12 on: June 16, 2011, 07:44:21 pm »
What the land line or the mobile?

Thats what answer machines are for ;)

Regards
Alan
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Blast Away

Re: how do i totaly remove black spots from indian stone?
« Reply #13 on: June 16, 2011, 08:14:21 pm »
Quote from: C-Y-D on June 16, 2011, 07:06:23 pm
i must be only person who dosnt use hypo, where is the best place to get it? and what is the mix?
Alan tried phoneing you a couple of times you never answer!!

It's great stuff. Did some old york stone today absolutely caked in black spots and came up great.
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Matt Gibson

  • Posts: 2482
Re: how do i totaly remove black spots from indian stone?
« Reply #14 on: June 16, 2011, 08:20:55 pm »
Yeah i was new to the hypo, but after some good advice, i always get rid of those black spots.. ;D
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Simon@Pristine Pathways

  • Posts: 397
Re: how do i totaly remove black spots from indian stone?
« Reply #15 on: June 16, 2011, 08:29:52 pm »
sounds good, where do i get it? chester area
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Blast Away

Re: how do i totaly remove black spots from indian stone?
« Reply #16 on: June 16, 2011, 09:02:01 pm »
Quote from: C-Y-D on June 16, 2011, 08:29:52 pm
sounds good, where do i get it? chester area

Just did a quick search on Google http://www.reagent.co.uk/sodium-hypochlorite.html

Runcorn.

EDIT:

Sack that, seen the price!!!!!!!!
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jaespray

  • Posts: 333
Re: how do i totaly remove black spots from indian stone?
« Reply #17 on: June 16, 2011, 09:02:40 pm »
i spoke to these guys   www.blackalgae.co.uk   months ago
they prommissed to send a sample  made great claims for the product
when i told them i wanted it for professional use
guess what    i am still waiting for my sample
i think they are just after the domestic market
you guys could prove me wrong
regards johnhttp://
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Cliff Horne

  • Posts: 131
Re: how do i totaly remove black spots from indian stone?
« Reply #18 on: June 16, 2011, 09:52:49 pm »
I buy Hypo (dairy wash as used by farmers) from most farm stores, is this the same as you guys use? seems to work OK.

Regards
Cliff
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Smart like a donkey, hung like Einstein

Matt Gibson

  • Posts: 2482
Re: how do i totaly remove black spots from indian stone?
« Reply #19 on: June 16, 2011, 10:01:40 pm »
you can usually get it from swimming pool shops too. I get mine from a chem company but then again, im in Glasgow..
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