Treatments for Moss, Mouse, Lichen and Algae

Moss, Mould, Lichen & Algae Treatments

For Wellington, Hutt Valley, Porirua & Kapiti

We have treatments available using a patented product that kills moss, mould and lichen spores and other organic growth.

The property wash will remove the superficial growth in most cases but the treatment actually kills the spores.

Mossy wall and lichen example

Why is This Treatment Important?

Moss is a living, growing organism made up of a mass of tiny plants. Lichen and algae are similar and grow alongside moss.

They thrive in damp places and it is common for properties in valleys and gullies, areas with little sunlight or close to shady trees to have some form of organic growth.

Moss and lichen hold moisture and extends the length of time a cladding material stays wet. If left untreated, the spores will continue to spread, causing premature aging of paint work, permanent staining and wood rot.

Mould and algae don't have a root system like moss and so their appearance is more of an aesthetic issue and can make a property look shabby. Left untreated, they can cause dark staining to occur.

Do you have black mould? We have extensive experience in removing this ugly and dangerous black mould. Contact us today for a free quote.

How Does The Treatment Work?

We spray the surfaces with a quality patented product as part of a post-wash treatment and leave the product to work over the months following a property wash.

Who Are Our Customers?

Our customers are many from all over Wellington, Hutt Valley, Porirua and Kapiti.

As well as treating moss, mould and other nasty organisms, did you know we also offer exterior house washing?

House Washing Wellington phone number

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Locations Wellington, Hutt Valley, Porirua & Kapiti


Locations Detail


We currently house wash in the following regions;

  • Wellington
  • Hutt Valley
  • Porirua
  • Kapiti

027 4422 676


These are just a few of the many satisfied customers.

Thank you so much for the excellent job done. Tim of Acorn House Washing, was great to work with, extremely professional and produced high quality work which was beyond expectations. I would thoroughly recommend Acorn House Washing.

Alison, Tawa

I just wanted to say again how very happy I am with the house and pavement wash that you did.

Thank you so much for offering me such good val├╣e for money, and organising to come at such short notice when the other company had let me down.

My extended family also were very impressed and made comments about the quality job that you did.

I am very appreciative and will not hesitate to use Acorn House Washing again in the future. Kind regards from a very happy customer.


I would not hesitate to recommend you to any of my friends/contacts.  Delighted with the outcome.

Marilyn, Wellington

Thanks Acorn. It was great to start off the new year with an amazingly clean driveway and pathway.

I couldn't believe how much dirt your equipment cleaned away and the difference to the drive.

It looks brand new again. Awesome work and will use your services again.

Lynda, Paraparumu

He seemed thoroughly aware of the risks associated with water blasting.

.... Mr Quirke arrived at the arranged time and completed the job that same day.

We are pleased with the result....

We are happy to recommend Mr Quirke for similar work.

Nancy, Wadestown