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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Ryan Tyler on March 13, 2021, 02:41:18 pm

Title: Best chemicals to clean these marks off pillars?
Post by: Ryan Tyler on March 13, 2021, 02:41:18 pm

Afternoon all, 



Quote on a window cleaning job today and the client also has some stone columns & horizontal pillars in the attached photos with some black marks. Didn't have my gear on me so couldn't try to remove them with water and a scrub on the spot, anyone had experience with this sort of thing? I guess it looks a little like lichen but I'm hoping it doesn't need to be pressure washed off — what chemicals would you reccomend? Hypo? Virosol? TFR? Thanks in advance!

(http://www.cleanitup.co.uk/smf/1615646438_WhatsApp Image 2021-03-09 at 12.22.40 (1).jpeg)(http://www.cleanitup.co.uk/smf/1615646448_WhatsApp Image 2021-03-09 at 12.22.40.jpeg)(http://www.cleanitup.co.uk/smf/1615646456_Screenshot 2021-03-13 at 14.37.30.png)

Title: Re: Best chemicals to clean these marks off pillars?
Post by: Phil J on March 13, 2021, 04:23:54 pm

Try a degreaser applied from a backpack via water fed pole, scrub, and rinse that should do the job.

Title: Re: Best chemicals to clean these marks off pillars?
Post by: Smudger on March 13, 2021, 04:33:37 pm

Soft wash with hypo through a backpack

Not convinced it's algae - looks like somethings been thrown onto the stone - either way that's a good place to start

Darran

Title: Re: Best chemicals to clean these marks off pillars?
Post by: Slacky on March 13, 2021, 04:42:26 pm

I'd expect to be giving that two applications. I reckon a TFR would get most of it off, lots like something has been thrown at it, so a TFR should resolve that. There also looks like an organic growth on there, which hypo should resolve. Could follow up by trying to flog them a biocide treatment as well.

Title: Re: Best chemicals to clean these marks off pillars?
Post by: Ryan Tyler on March 14, 2021, 08:38:34 am

Thanks for the tips guys!

Title: Re: Best chemicals to clean these marks off pillars?
Post by: the king on March 14, 2021, 04:07:40 pm

Lite pressure wash steam if you have it or tfr may work

Title: Re: Best chemicals to clean these marks off pillars?
Post by: dazmond on March 14, 2021, 05:55:13 pm

personally id try to clean off a little patch of it with just my hot pure water....this is what i do on plastic cleans all the time to make sure its not anything too stubborn before i put a  price in.....

Title: Re: Best chemicals to clean these marks off pillars?
Post by: JandS on March 16, 2021, 04:36:56 pm

I'd leave well alone......get somebody that knows what they're dealing with....stain wise and material wise.

Title: Re: Best chemicals to clean these marks off pillars?
Post by: Yada Yada Yada - www.m-clean.uk on March 19, 2021, 08:32:01 pm

It's pigeon/bird crap