Roof Treatment Experts -
Extend the Life of Your Roof with Guardian SealIs your roof starting to show signs of age, moss, mould, fading, or discoloration? Guardian Seal provides expert roof treatment that restores appearance, protects long term, and delays the need for costly repairs or full roof restoration.
Our low-impact, environmentally friendly roof treatment solution is designed specifically for New Zealand homes. Whether it's tile, iron, or concrete, we take care of your home with smart, safe, and effective roof maintenance.
What is Roof Treatment?
Roof treatment is the essential first step in long-term roof maintenance. Rather than reacting to damage, it's a proactive approach that:
- Removes moss, mould, and lichen at the root
- Slows down regrowth for lasting results
- Enhances your home's street appeal
- Prevents early deterioration that can lead to full roof restoration
At Guardian Seal, we apply a specialised treatment that's tailored to your roof type and condition, without damaging the surface.
Contact usWhy Choose Guardian Seal for Roof Treatment?
Safe and Proven System
Our formula penetrates deep into the surface, neutralising organic growth and creating a protective layer — without water blasting or harsh chemicals.
Professional Roof Maintenance
We don't just treat and leave. We assess your roof, apply with care, and offer ongoing roof maintenance plans based on your environment and needs.
Tank Water & Plant Safe
Our roof treatment product is non-toxic, biodegradable, and suitable for homes using rainwater collection systems.
Preserve Your Roof, Avoid Full Restoration
Regular roof treatment can help avoid the high cost of complete roof restoration, especially for older roofs starting to deteriorate.
Roof Types We Treat
Our roof treatment is suitable for:
- Concrete tile and clay tile roofs
- Metal/iron roofs - Unisteel, COLORSTEEL®, Zincalume®, galvanised
- Decramastic tile roofs
- Old or asbestos-based roofs (low-pressure option)
We tailor every roof treatment to your home, materials, and the level of build-up.
Quote TODAY!



Signs You Need Roof Treatment
Our roof treatment is suitable for:
- Green or black patches on the surface
- Mould around flashings or gutters
- Moss buildup near valleys or ridges
- Stained, faded or patchy roofing
- Roof has not been serviced in 3+ years
Ignoring these signs could fast-track the need for major roof restoration. Act now with a simple roof treatment and avoid major issues later.
Book Your Roof Treatment
with Guardian Seal
Clean, protect, and extend the life of your roof, before roof restoration becomes your only option.Choose Guardian Seal for trusted, professional roof treatment that works.