Roof Moss and Mould Treatment Prices in New Zealand: Everything You Need to Know



If you are a homeowner in New Zealand, one of the challenges you may face is dealing with moss and mould on your roof. Not only can these unsightly growths diminish the appearance of your home, but they can also cause damage and lead to expensive repairs if left untreated. In this blog post, we will explore the topic of roof moss and mould treatment prices in New Zealand, providing you with valuable insights and tips on how to address this issue. We will discuss the average costs, factors that influence pricing, effective treatment methods, and potential long-term solutions. So let’s dive in and find out all you need to know!


Average Roof Moss and Mould Treatment Prices:

Before delving into the specific factors that contribute to the cost of treating roof moss and mould in New Zealand, it’s important to have a general idea of the average prices. The prices can vary depending on various factors that we will discuss later, but on average, you can expect to pay around $300 to $1000 for a professional roof cleaning and treatment service. This cost typically includes the cleaning of moss and mould, the application of a suitable treatment solution, and the removal of any debris.

Roof moss and mould treatment price indication but not fixed.

80-120sqm $345

120-180sqm $375

Double storey

80-120 sqm $400

120-180 $450


Factors Affecting Roof Moss and Mould Treatment Prices:


Several factors can influence the cost of treating moss and mould on your roof. These factors can vary from one service provider to another and can impact the overall pricing. Let’s take a closer look at some of the key factors:

  1. Roof size and complexity: The size and complexity of your roof can impact the time and effort required to clean and treat it. A larger roof or a roof with intricate architectural details may require more materials and labor, thereby increasing the overall cost.
  2. Accessibility: The ease of access to your roof can also affect the price. If your roof is difficult to reach or requires special equipment such as scaffolding or a cherry picker, the service provider may charge extra for the additional effort and equipment needed.
  3. Extent of moss and mould growth: The severity of the moss and mould growth on your roof will also play a role in determining the cost. If the growth is extensive and has spread to multiple areas of the roof, it will require more time and resources to eradicate, leading to higher prices.
  4. Treatment method: Different service providers may use different treatment methods, and the choice of method can impact the pricing. Some treatments may be more labor-intensive or require specialized equipment, which can affect the overall cost.

Effective Roof Moss and Mould Treatment Methods:


Now that we have a better understanding of the factors that influence pricing, let’s explore some effective treatment methods for moss and mould on roofs. It’s important to note that while there are DIY options available, hiring a professional service is generally recommended for best results and to ensure the safety of both you and your roof. Here are some commonly used treatment methods:

  1. Soft Washing: Soft washing involves using low-pressure water combined with a biodegradable cleaning solution to gently remove moss, mould, and other contaminants from the roof surface. This method is effective in treating the problem while minimizing any damage to the roof.
  2. Chemical Treatments: Chemical treatments involve the application of specialized solutions that effectively kill moss and mould on contact. These treatments are typically tailored to suit the specific needs of individual roofs and can provide long-lasting protection against future growth.
  3. Preventive Coatings: In addition to treating existing moss and mould, applying preventive coatings can help inhibit future growth. These coatings create a protective barrier on the roof surface, making it difficult for moss and mould to take hold. This can be a cost-effective long-term solution to keep your roof in top condition.

Long-Term Solutions for Roof Maintenance:


While treating moss and mould on your roof is essential, it’s equally important to consider long-term solutions to prevent their recurrence. Here are some steps you can take to maintain a moss and mould-free roof:

  1. Regular Inspections: Periodically inspect your roof for any signs of moss or mould growth. Catching the problem early can prevent it from spreading and minimise the cost of treatment.
  2. Trim Overhanging Trees: Overhanging trees can provide shade and moisture, creating an ideal environment for moss and mould to thrive. Trim back any branches that come into contact with your roof to reduce the risk of growth.
  3. Keep Gutters Clean: Clogged gutters can lead to water pooling on the roof, providing a breeding ground for moss and mould. Regularly clean your gutters to ensure proper drainage and prevent moisture buildup.
  4. Improve Ventilation: Proper ventilation can reduce moisture buildup in your attic and on your roof, preventing the conditions that promote moss and mould growth. Consider installing vents or fans to improve airflow.



Dealing with moss and mould on your roof is an important part of home maintenance in New Zealand. By understanding the average prices, factors that influence pricing, and effective treatment methods, you can make informed decisions and ensure your roof stays in optimal condition. Remember to prioritise safety and consider hiring professional services for the best results. With regular inspections and long-term maintenance, you can keep your roof moss and mould-free, protecting your investment and enhancing the overall curb appeal of your home. Don’t let moss and mould dampen your spirits – take action today and enjoy a clean and healthy roof for years to come!


Additional Keywords: roof cleaning, moss removal, mould treatment, roof maintenance, New Zealand homeowners

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