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Roof Treatment Experts - Extend the Life of Your Roof with Guardian Seal

Is 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.

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    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.

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    Why 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.

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    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.

    Frequently
    asked questions.

    Ask us anything at all.

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    Most homeowners see results for 2-4 years. We recommend reapplication as part of a regular roof maintenance schedule, especially in shaded or high-moisture areas.
    Roof treatment is preventative — it protects your roof and keeps it clean. Roof restoration is reactive — it involves repairs, resealing, and sometimes repainting or replacing parts of the roof.
    Yes. Our solution is non-corrosive and plant-safe. No damage, no runoff risk, just clean and lasting roof treatment results.

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    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.

      100% secured, no credit card required.
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