One week after spraying: what dying moss looks like

Same stretch of asphalt, a week apart.

Green moss growing along the base of a block wall on asphalt, before treatment

Moss along the base of a wall, where the surface stays damp longest. Thick and green.

The same asphalt and wall one week after spraying, with the moss turned orange-brown and dead

Seven days after spraying. The moss has gone orange-brown. That colour is the whole point — it means the moss is dead.

It is still sitting there, and that is what catches people out. Spray-and-leave does not sweep up after itself. Once the moss is dead the rain breaks it down and washes it off over the following weeks. No scrubbing, no water blasting, no rinsing.

Moss and green mould usually turn within days to a couple of weeks. Lichen is slower and can take months, up to six for a bad case. A site that looks much the same at a month is lichen being lichen, not a treatment that has failed.

Purple Strike supplies commercial-strength moss, mould and lichen treatment across New Zealand. We supply the product, your team applies it. Questions before you order — ben@purplestrike.co.nz or 021 466 060.

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