On 07/11/2020 10:43, Chris Green wrote:


Does everyone *really* worry all that much about what colour their
patio paving ends up as it weathers? Our patio paving (two areas
outside sliding doors outside the house and one area round the pond)
just get cleared of the weeds that pop up through the cracks and
that's it. If they go funny colours with lichen or other such things
then that's part of their attraction IMHO.

You don't clean all the funny patches off the bark of beech or silver
birch trees (or do you).



You don't normally walk on the lichen or algae on the bark of trees.
Algae on paving slabs can be very slippery when wet.


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