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White spotting on block paving
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James pryer
Cleanitup Full Member
Posts:
61
White spotting on block paving
«
on:
March 18, 2021, 01:28:56 pm »
Hi all,
On a 2 day job and have come across white spotting on block having. Put a 7% hypo mix on it and so far I can’t see any change.
Anyone know how to shift this?
Thanks
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Smudger
Cleanitup God
Posts:
13275
Re: White spotting on block paving
«
Reply #1 on:
March 18, 2021, 02:41:50 pm »
usually does the trick - try stronger dose - just double check its not white stones in the paving itself
Darran
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A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
www.oddbodscleaning.co.uk
James pryer
Cleanitup Full Member
Posts:
61
Re: White spotting on block paving
«
Reply #2 on:
March 18, 2021, 06:31:02 pm »
Do you hypo before pressure washing? Or pressure wash then hypo?
Thanks Darren
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Slacky
Cleanitup God
Posts:
7743
Re: White spotting on block paving
«
Reply #3 on:
March 18, 2021, 06:53:59 pm »
Pressure wash first then hypo usually.
Then rinse, or turbo ...
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Smudger
Cleanitup God
Posts:
13275
Re: White spotting on block paving
«
Reply #4 on:
March 18, 2021, 10:41:21 pm »
yes as above pressure wash first - then hypo otherwise your using hypo on dirt that is not cleaned by using hypo + things like black spot and slightly lesser white spot form a hard shell that chemicals find hard to penetrate if you turbo it breaks this shell allowing hypo inside and destroys the lichen much more effectively
Darran
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A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
www.oddbodscleaning.co.uk
the king
Cleanitup God
Posts:
1389
Re: White spotting on block paving
«
Reply #5 on:
March 19, 2021, 06:06:34 am »
What percentage hypo mix to you lads use for black spot
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Smudger
Cleanitup God
Posts:
13275
Re: White spotting on block paving
«
Reply #6 on:
March 19, 2021, 04:32:20 pm »
50% to start - if still there neat
applied through ik sprayer so not wasteful
Darran
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A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
www.oddbodscleaning.co.uk
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White spotting on block paving