Roof Treatment
AUCKLAND
The HWNZ Difference in Preserving and Treating High-End Roofing
Roof treatment isn’t just about aesthetics it’s about safeguarding your property from the top down. At HWNZ, we deliver expert roof treatments designed to eliminate moss, lichen, mould, and algae at the root, without compromising the beauty or structure of your roof.
Our approach draws on over a decade of specialist experience with high-value, architectural, and heritage properties. We tailor each treatment to suit your roof’s material, condition, and design, ensuring lasting results, minimal disruption, and maximum protection.
Specialist Roof Treatment for High Value Properties
Our white glove roof care service is created exclusively for Auckland’s most refined residences. We work discreetly, respectfully, and with an unwavering focus on protecting the integrity of premium houses. Whether your roof features cedar shakes, Colorsteel, slate, or copper, our team applies each treatment with surgical precision.
What’s Included?
- Onsite inspection and advice about the best way to clean your roof
- Treatment applied to all clean and dirty areas of the roof
- All roof surfaces and flashings
- Works to clean roof from 6 to 12 months
- Guaranteed results
HWNZ offer full service exterior cleaning. So, if you require more than just a roof treatment, we can discuss other areas such as house wash, gutters and surrounding property at your request.
See The TEAM
Tailored Biocide Treatment for Moss, Lichen & Organic Growth
Organic growth is more than an eyesore it traps moisture, compromises roofing materials, and accelerates degradation. Our low-pressure, targeted biocide applications neutralise growth at the root, preventing regrowth for up to 18 months, all without water blasting, noise, or risk to your roof structure.
Auckland’s Most Trusted
- Over 280 Five Star Reviews
With hundreds of 5-star reviews, our reputation is built on superior results and white glove, tailored service.
Our Happy Clients
Extend the Life of Your Roof Without the Damage of Water Blasting
Traditional methods can crack tiles, strip coatings, and drive water where it doesn’t belong. HWNZ’s roof treatment process is non-invasive, gentle on surfaces, and powerfully effective. It quietly works over time, allowing nature to gently rinse away organic buildup while preserving your roof’s finish and structural integrity.
Trusted to Wash
New Zealand’s Best
Why is HWNZ is the preferred option for exclusive property in NZ? We have team leaders on every job site. We pride ourself in service, safety and exceptionally clean results. We are officially the highest rated exterior operator in Auckland with over 290 5 Star Google Reviews.
We send before and after photos immediately upon completion to confirm the job was done as quoted.
Come Home to
QUALITY
For more than 7 years, HWNZ has earned a name for quality and customer service. The property owners we serve rely on us for detail-oriented, consistent cleaning services, every single time we wash their homes and businesses.
Here to Serve
With the right team and the right experience, our team is fully equiped to serve you with the best service and the best results.
The Right Equipment
The Right Team
- Hybrid fleet
- Fully insured
- Pure water system for a spot-free finish
- Fully trained, specialist team
- Soft washing equipment
- Health & Safety Compliant
Call us now to discuss your requirements and receive a no obligation, free quote.
The Process of
Roof Treatment
Moss, mould and lichen can damage your roof if left untreated. Let us improve the appearance of your building and help you safeguard against future damage.
The steps we follow are:
- Application of an eco-friendly biocide at low pressure to your roof surface. It is important to apply it at low pressure so that no water enters your roof structure. The biocide works over a 3 to 6 month period depending on the roof material and the extent of the moss, mould or lichen infestation.
- We can usually do this work without actually going on the roof, preventing any further damage to the roof.
- We will come back after 6 months to re-inspect your roof giving you peace of mind that the treatment is 100% effective.
The Right Tools
for the Job
Exterior cleaning requires not only care and attention to detail, but the right tools for each specific washing task.
HWNZ invest in the right equipment to run any exterior job efficiently and safely. Our fleet of hybrid vehicles keep our carbon footprint as low as possible and the correct size machines power through work safely and thoroughly.
Our pure water systems leave you with a better, spot free result on any windows that need cleaning and our extension equipment get to all those hard to reach spots effectively.
We invest in the right equipment so you don’t have to worry about the pain of maintenance and equipment that doesn’t go to good use. Call the HWNZ team for a free Quote
Our Equipment
Owner Led Service. Guaranteed Results. No Subcontractors.
With HWNZ, you deal directly with the owner. Our commitment to confidentiality, quality, and care is built into every job we undertake. From first contact to final inspection, your satisfaction is our standard.
FAQs
Over time, moss and mould can grow on your roof, causing damage to the shingles and other roofing materials. Additionally, the growth can also cause water damage and potential health hazards. Roof moss and mould treatment services can help prevent these issues and keep your roof in good condition.
Roof treatment service typically includes applying a specialised solution to kill and remove the moss and mould, cleaning the roof surface, and preventing future growth with a protective coating.
Signs that your roof may need moss and mould treatment include the presence of moss or mould growth on the roof surface, water damage to the ceiling or walls, and a musty smell in the attic or living spaces.
Yes, roof treatment service is safe for your house when performed by a professional. A professional roof moss and mould treatment service provider uses specialised equipment and techniques to ensure that the treatment is done safely and without causing any damage to your roof or house.
The frequency of roof moss and mould treatment depends on various factors, such as the climate in your area and the amount of tree coverage around your house. Generally, it is recommended to get your roof treated every 2-3 years, but some houses may require more frequent treatment.
The cost of roof moss and mould treatment service depends on various factors, such as the size of your roof, the level of cleaning required, and the location of your house. It is best to get a quote from a professional roof moss and mould treatment service provider to determine the exact cost.