Roof Treatments

Expert Roof Cleaning and Protection for Bay of Plenty Homes

Protect your home’s concrete tile roof, iron roof or flat membrane roof with our expert roof treatments. Using soft wash techniques, we clean and then apply protective coatings to extend roof life, boost energy efficiency, and prevent costly future repairs. In New Zealand’s humid climate, algae, moss, and lichen can damage roofs, but our roof cleaning services ensure durability and aesthetics for concrete tiles and iron roofing. We also clean corrugated plastic roofing on things like pergolas.

Before

After

Our Roof Treatment Process

In New Zealand, algae like Gloeocapsa magma cause black streaks on concrete tiles, accelerating wear, while moss and lichen trap moisture, risking corrosion on iron roofs or cracks in tiles. Membrane roofs can delaminate at the seams; this can allow access of water. Traditional cleaning can damage these surfaces, but our low-pressure soft wash method safely removes contaminants using specialised algaecides, fungicides, and surfactants.

1. We start with a free inspection, often using drones for hard-to-reach areas, to assess roof condition.

2. Roofing should be regularly washed with clean water to avoid a build-up of dirt, salts and other debris – particularly in those areas which get little rain on them. The cleaning solution is applied, sits to break down grime, and is gently rinsed off.

3. Concrete tiles are cleaned to restore colour without erosion, and iron roofs receive rust-inhibiting treatments.

4. Optional zinc-based coatings prevent regrowth for 2-3 years.

Benefits of Roof Treatments

Clean roofs, as part of a clean exterior, improve kerb appeal, thus increasing property value when selling, per real estate experts. Removing mould and algae improves air quality for allergy sufferers and helps to reflect sunlight, leading to cost savings on cooling during the warmer months. Commercial roofs on apartments or offices benefit from compliance with building codes and potential insurance savings. Our treatments are tailored for New Zealand’s concrete tile and iron roofs, ensuring longevity.

Bay House Washing Tauranga

Our Practices & Pricing

Our team uses fall-protection gear and follows WorkSafe New Zealand guidelines. Eco-friendly, low-VOC solutions are safe for your garden. Pricing starts at $250 plus GST for an average 140 sqm house.

Get a Free Quote

Our roof treatments use copper or zinc sulphates to disrupt algae photosynthesis, preventing growth. Industry research supports soft washing for concrete tiles and iron roofs to maintain durability. Tips include regular gutter checks and avoiding harsh DIY cleaners that may damage roofs or void warranties.

Hire a professional roofing cleaner to do the job for you. Contact us for a free quote to protect your concrete tile or iron roof with our expert roof treatments.