Clean It Up

UK General Cleaning Forum => General Cleaning Forum => Topic started by: Simon@Pristine Pathways on June 08, 2011, 06:39:11 pm

Title: how do i totaly remove black spots from indian stone?
Post by: Simon@Pristine Pathways on June 08, 2011, 06:39:11 pm: can anyone help with this? thanks
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Kev Martin on June 08, 2011, 07:00:16 pm: Post some photos or tell me what you think the spots are

Kevin
MLL
Title: Re: how do i totaly remove black spots from indian stone?
Post by: drive surgeon on June 08, 2011, 07:08:15 pm: lichen!!! heat or hypo if turbo wont shift!
;)
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Alan McTernan 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
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Simon@Pristine Pathways 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.
Title: Re: how do i totaly remove black spots from indian stone?
Post by: 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 ;)
Title: Re: how do i totaly remove black spots from indian stone?
Post by: 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
Title: Re: how do i totaly remove black spots from indian stone?
Post by: BDCS on June 08, 2011, 11:45:08 pm: That sounds like fertiliser on the stone
Title: Re: how do i totaly remove black spots from indian stone?
Post by: 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 ?
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Blast Away 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.
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Alan McTernan 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 :'(
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Simon@Pristine Pathways 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!!
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Alan McTernan on June 16, 2011, 07:44:21 pm: What the land line or the mobile?

Thats what answer machines are for ;)

Regards
Alan
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Blast Away 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.
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Matt Gibson 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
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Simon@Pristine Pathways on June 16, 2011, 08:29:52 pm: sounds good, where do i get it? chester area
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Blast Away 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!!!!!!!!
Title: Re: how do i totaly remove black spots from indian stone?
Post by: jaespray 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://
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Cliff Horne 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
Title: Re: how do i totaly remove black spots from indian stone?
Post by: Matt Gibson 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..