On 28/08/2018 13:16, Martin Brown wrote:
On 27/08/2018 14:31, Broadback wrote:
On 27/08/2018 13:01, Jeff Layman wrote:
On 27/08/18 12:21, Endulini wrote:
Hi Folks,

I would like to clean a build up of moss off my patio area, I have a
power-washer to do the final clean but it has struggled in the past
with
some of the larger build up of moss in some areas. Can anyone
recommend any
of the cleaning agents that you water/brush on and leave to dry or
are they
a much-of-a-muchness? I'm not bothered by whether it is 'organic' or
'chemical-free' or any of that nonsense, I just want something that
works.

Cheers

I'd be interested in a recommendation, too.

What sort of power-washer head are you talking about? IME, the
rotating heads do not clean anywhere near as well as the standard
lances, but then again they don't make anywhere near the mess that
lances do.

Biological washing powder kills moss very well.

Mainly because it is so caustic.

Very good on lawns as it does not affect the grass. Not tried it on
stone though.

Ferrous ammonium sulphate works even better on lawns. Kills the moss by
making its chlorophyll go black and gives the grass a nitrogen boost.
Don't ever get it on paths though unless you like rusty iron stains.

Sold as sulphate of iron (chemically I believe is ferrous sulphate)

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