Roof Treatment: Ultimate Defense Against Moss, Mould, and Lichen Damage
Roof treatment is a critical preventative maintenance strategy for Auckland properties, offering comprehensive protection against destructive organic growth like moss, mould, and lichens. Our specialised treatment creates a robust protective barrier that inhibits these organisms’ ability to colonise roofing surfaces. Our solutions penetrate and neutralise existing growths while establishing a long-lasting defence mechanism.
By addressing potential moisture retention points and applying targeted treatments, we prevent potential structural damage, extend your roof’s lifespan, and maintain your property’s aesthetic and structural integrity against Auckland’s challenging, humid climate conditions. Our professional roof treatment eliminates organic infestations and provides a sustainable, proactive approach to preserving your valuable property investment.
Residential and Commercial Roof Treatments
A roof treatment is the best option when your roof has growth such as moss, mould and lichen.
We apply a natural salt-based product to your roof which will penetrate into the structure of the growth, killing everything down to the roots.
The treatment is left on the roof and over a 4 – 6 week period will kill off the growth which then weathers away over 8-12 months. This keeps your roof free of moss, mould and lichen for up to 18 months.

Effective Roof Treatments
Keep your roof in peak condition and retain its value by removing damaging moss, mould and lichen.
Our Roof Treatment Process
Our expert technicians begin with a detailed assessment of your roof, identifying existing moss, mould, and lichen colonies and potential vulnerabilities in your roofing system. Using specialised treatments, we create a robust protective barrier that neutralises current infestations and prevents future growth. Our meticulous process includes the targeted application of advanced solutions that penetrate and eliminate organic matter while establishing long-lasting defence mechanisms. We take exceptional care to protect your property during treatment, utilising professional-grade equipment and techniques that safeguard your roof’s structural integrity. After treatment, we conduct thorough inspections to ensure complete coverage and optimal protection against Auckland’s challenging, humid climate, helping to extend your roof’s lifespan and maintain your property’s aesthetic and structural value.
By addressing potential moisture retention points and applying targeted treatments, we prevent potential structural damage, extend your roof’s lifespan, and maintain your property’s aesthetic and structural integrity against Auckland’s challenging, humid climate conditions. Our professional roof treatment eliminates organic infestations and provides a sustainable, proactive approach to preserving your valuable property investment.
What’s included in a roof moss and mould treatment?
- Surface treatment
- Post-treatment inspection
Our Booking process
Get your property cleaned in 3 simple steps
Click the get a quote button and tell us which services you would like
One of our operators will promptly get in touch with you to provide a free no obligation quote
We schedule the work at a time that suits you and give you all the details you’ll need to know, specific to your own job

You’re in safe hands
with Spray & Wash
Our Promises
Good honest commercial and home building wash services.
- No-pressure Quotes
- Fair Pricing
- Going the Extra Mile
- Great Communication
- Biodegradable Soft Chemical Washing
Our owner-operators take pride and cut no corners. You can trust that you’re in safe hands with Spray and Wash.
Our Training
Our Teams are extensively trained, this includes:
- Working at Heights
- Damage-Free Washing Techniques
- Soft Washing Training
- Chemical Handling
- Pressure Washing Training
This training and knowledge ensures we avoid any damage and forceful water use around your home or business.



Auckland Wide Exterior
Cleaning Services

House Washing
Bring back that fantastic shine and protect your home’s paint and surfaces.

Gutter Cleaning
Free your gutters of corrosion and rainwater buildup safely and effectively.

Commercial Building Washing
We offer complete commercial building wash and treatment services Auckland wide.

Roof Washing
Keep your roof in peak condition and retain its value by removing damaging moss, mould and lichen.


Fence Washing
Clean your fence to make a flawless first impression. Return your fence to its former glory.

Driveway and Concrete Cleaning
We offer complete driveway and concrete cleaning and treatment services Auckland wide.

Frequently Asked Questions
The frequency of treating your roof for moss and mould can vary based on factors like your local climate and the amount of trees around your house. Typically, treating your roof every 12 months is suggested, but some houses may need it more often. Regular treatments help keep your roof in good condition and prevent moss and mould growth from causing damage.
It’s generally advised to have professionals handle the application. This ensures safety, proper technique, and the best and longest-lasting outcomes. Hiring professionals gives you peace of mind and ensures the job is done right.
It’s best to schedule treatments during dry weather conditions to ensure that the solution works effectively. This helps to maximise the effectiveness of the treatment and achieve the desired results.
You might need moss and mould treatment for your roof if you notice moss, mould or lichen growth on the roof, water damage to the ceiling or walls, or a musty smell in your attic or living areas. These signs indicate potential issues that need attention.
When handled by a professional, roof moss and mould treatment is completely safe for your house. Professionals are trained to use specialised equipment and techniques to apply the treatment safely without causing any harm to your roof or house.
Yes, roof treatment can be part of tile roof maintenance as it prevents moss and increase life of roofing materials