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algae on tarmac

does anyone know how to remove algae from tarmac without harming animals

Comments

  • A pressure washer is good, don't need to use any chemicals, just the water pressure alone gets anything off.


    I love animals; I've eaten lots of them :rotfl:

  • Cardew
    Cardew Posts: 29,064 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Rampant Recycler
    I have tried everything to no avail.

    A pressure washer obviously works, but lifts a little of the tarmac each time; although I suppose it depends on the density of the darmac.

    Plenty of chemicals kill the algae, but the dead algae is still difficult to get off. Leaving the dead algae just provides nutrients for the new algae the forms.

    I have now given up and eventually the old stuff dies and becomes loose, but the new plants are underneath.
  • jancee_2
    jancee_2 Posts: 221 Forumite
    Scatter washing soda liberally and sprinkle with water. Use a stiff yard brush next day.
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