Moss and lichen growth on roofs is a common issue for homeowners in New Zealand. The country's unique climate, characterized by high humidity and regular rainfall, creates the perfect environment for these organisms to thrive. Understanding why they grow on your roof and how to deal with them effectively is essential for maintaining your home's longevity and aesthetics. This is where Edwards & Hardy, New Zealand's leading roof maintenance experts, come in.

Understanding Moss and Lichen Growth

Climate Conditions: New Zealand's clean air and climate, especially in regions with high rainfall, provides the ideal growth conditions for moss and lichen. These organisms love moisture and can often be seen flourishing in damp, shaded areas.

Roof Material and Structure: Certain roofing materials, such as asphalt shingles, clay tiles, concrete tiles and textured metal tiles, can retain moisture or support the build-up of grime which exposes them to moss and lichen growth. Roofs with poor drainage or shaded by overhanging trees are particularly vulnerable.

Airborne Spores: Moss and lichen reproduce through spores carried by the wind. Once these spores land on your roof, they can quickly take root and spread, especially if the roof is dirty and remains damp for extended periods.

Why Is Moss and Lichen Growth a Problem?

Structural Damage: Moss retains moisture, which can seep into the roofs protective coating and lead to the deterioration of the roofing material over time. This can result in leaks and structural damage.

Aesthetic Concerns: A roof covered in moss and lichen can look unsightly and neglected. This not only affects the street appeal of your home but can also reduce its market value.

Increased Maintenance Costs: If left untreated, moss and lichen can cause significant damage that requires expensive repairs or even a complete roof replacement. Regular maintenance and early intervention are far more cost-effective and will extend the life of your roof.

How Edwards & Hardy Can Help

Expert Roof Maintenance: Edwards & Hardy has been at the forefront of roof maintenance in New Zealand for over 65 years. Their expertise in dealing with moss and lichen ensures that your roof is cleaned organic material and protected from future growth.

Comprehensive Roof Treatment: Edwards & Hardy uses a specialized roof treatment process that removes moss and lichen without damaging your roof. This involves applying a slow-acting roof treatment solution that will gently clean your roof over 10 to 12 months and which will also inhibit immediate regrowth.

Preventative Measures: After your roof has been weathered clean, which takes around 12 months, we will undertake a Moss Proofing Treatment. We recommend you continue to apply it every two to three years. The RoofGuard® Moss program stops regrowth and maintains the appearance and integrity of your roof.

Regular Maintenance Plans: Edwards & Hardy provides tailored maintenance programs to ensure your roof remains in a like new condition. Regular inspections and treatments can significantly extend the lifespan of your roof while saving you money in the long run.

Moss and lichen growth on your roof can be a significant issue, especially in New Zealand's moist, temperate climate. However, with the expertise and services of Edwards & Hardy, you can keep your roof clean, well-maintained, and free from these invasive organisms. Investing in professional roof maintenance not only enhances the appearance of your home but also protects it from potential damage, ensuring peace of mind and long-term savings.

For more information or to schedule a roof inspection, fill in our Get a Quote and take the first step towards a better looking and longer-lasting roof.