Restore it. Don't replace it.

Guardian Seal's liquid membrane system is designed to protect vulnerable roof areas and extend roof life. For suitable roofs, restoration can be a lower-cost alternative to full replacement. Guardian Seal restorations are backed by a 10-year warranty.

Your final scope and price are confirmed after your free assessment. Quotes are typically provided within 24–48 hours.

Start your roofing request
No obligation. Takes less than a minute
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Guardian Seal restoration - before & after

Stop small issues growing

That water stain isn't nothing

A faded roof is annoying. A leaking one is different. Left unchecked, it works quietly: a stained ceiling today, timber rot behind the wall in a year, a big repair bill in three.

Guardian Seal is built for the roof in between: not brand new, not falling apart. If yours is faded, ageing, or showing rust and cracks, restoration is usually the lower-cost fix. The right call for your roof depends on its actual condition, which is what your free assessment is for.

The process

How it works

Four steps, without a full strip-off where restoration is suitable.

Roof cleaning and water blasting as part of Guardian Seal restoration

1. Clean.

Chemical treatment and a water blast remove moss, mould, and grime.

Roof surface preparation and repair before Guardian Seal coating

2. Prep & repair.

Agreed repair areas are addressed before coating begins.

Primer application on a roof surface

3. Prime.

A primer ensures the coating bonds and lasts.

Guardian Seal liquid membrane coating applied to a finished roof

4. Seal.

The agreed coating system creates a flexible, UV-resistant membrane.

Book your free assessment

Honest assessment

Is your roof a candidate?

Not every roof should be coated, and we'll tell you if yours shouldn't be. Restoration suits a roof with a sound structure but a failing surface. It's the wrong call if the structure itself is compromised, since coating over that just hides a bigger problem.

Every quote starts with an assessment of your actual roof, not a generic price. If restoration isn't right, we'll say so in writing and point you elsewhere.

Good candidate signs

  • Faded, chalky, or patchy colour
  • Surface rust or oxidation
  • Hairline cracks between tiles
  • Moss, mould, or lichen buildup
  • Minor leaks at joins or flashings
  • Not recoated in 8–10+ years

We'd likely say no if

  • The roofline sags or moves
  • Rot goes beyond the surface
  • Leaks caused major internal damage
  • The roof is at structural end of life

We'll tell you directly during the assessment, before any coating goes ahead.

The Guardian Seal Roof Restoration team
Restored roof types

Made for New Zealand

For common NZ roof types

Each material has its own prep requirements. One system doesn't fit all roofs.

  • Decramastic. A common re-coat candidate; needs rust treatment at fixings and joins first.
  • Concrete & clay tile. Seals hairline cracks and restores colour without disturbing sound tiles.
  • Metal (corrugated iron, COLORSTEEL®, Zincalume®). Addresses rust, oxidation, and chalking with a flexible membrane.
  • Butynol & flat/membrane roofs. May be suitable for an overcoat system after assessment.
  • Asbestos roofing. May be suitable for a restoration approach that avoids unnecessary disturbance. Mention it when you enquire.
Check if your roof type qualifies

Protection that lasts

Built to last, not just look good

Guardian Seal is a flexible membrane system designed to protect the roof surface, including vulnerable cracks and joins. The agreed scope and warranty details are confirmed after assessment.

  • 10-year warranty for Guardian Seal restorations; your project warranty confirms the available cover, term and exclusions
  • Suitable for rainwater homes when collection is managed during works
  • UV-resistant and flexible, built to move with the roof
Close-up of Guardian Seal liquid membrane coating applied to a roof
Finished Guardian Seal roof restoration

Clear, tailored pricing

What it costs

Cost depends on roof condition, material, access, and region. Your itemised quote confirms the cleaning, preparation, repairs and coating system for your roof. Prices are confirmed in writing and exclude GST unless stated otherwise.

Flexible payment plans may be available, subject to approval and the applicable finance terms.

Get a no-obligation quote

Local coverage

Where we work

Auckland · Wellington · Hamilton · Tauranga, our busiest areas.

We also cover the wider Waikato, Bay of Plenty, Manawatu-Whanganui, Hawke's Bay, Northland, and Taranaki. Get in touch to confirm your area.

Guardian Seal roofing team completing a restoration project

A practical place to start.

The Guardian Seal difference

Why homeowners choose Guardian Seal

A clear assessment, a roof-specific scope, and the details you need before making a decision.

01

Start with your roof.

We assess the condition before recommending a restoration.

02

See the scope.

Your quote outlines the preparation, repairs and coating system.

03

Get it in writing.

Your project documents confirm the scope, price and warranty details.

Learn more about Guardian Seal through our detailed guides.

Frequently asked questions

Helpful answers

Get your free assessment
Start with a company that assesses your roof before quoting, not one that quotes before seeing it. Confirm what preparation is required, how existing corrosion or defects will be addressed, which coating system is proposed, what warranty applies, and what's included in the price. Every Guardian Seal quote sets out the agreed preparation, repairs and coating system in writing, alongside the applicable price and warranty.
It depends on your roof's size, material, condition, and access. We'll provide a written quote for your actual roof after assessment; unless stated otherwise, quoted prices exclude GST.
Most suitable projects are completed in around 2–4 working days. Timing is an estimate and depends on roof size, preparation requirements and weather.
These terms overlap and are often used interchangeably for work that extends an existing roof's life rather than replacing it, sometimes also called refurbishment. We generally use 'restoration' because the scope typically involves more than a single coat: assessment, cleaning, surface preparation, addressing agreed defects, then applying the appropriate membrane system. The actual condition of your roof and the agreed scope matter more than the label used.
Guardian Seal restorations include a 10-year warranty. We'll confirm the exact cover after assessment; your project warranty sets out the exclusions and claim process.
Restoration suits a roof that's still structurally sound but showing surface wear like rust, cracks, fading, or minor leaks. If the problem is isolated, a repair alone may be enough. Reroofing is the better option where the roofing system or structure has widespread deterioration or has reached the end of its serviceable life. We'll assess your roof and tell you honestly which situation applies.
Paint is cosmetic. It typically fades or peels within a few years and doesn't stop water getting in. Guardian Seal is a different category of product: a liquid membrane system designed to protect the roof surface and seal vulnerable areas, with warranty details confirmed after assessment. We only offer coating, not painting.
Our team does a thorough visual inspection, checking for discolouration, rust marks, soft spots, and deteriorated sealant, especially around flashings and joins. Identified repair areas are addressed as part of the agreed scope before coating goes on.
Yes. This is common on older pressed metal tile roofs, especially ones around 15 to 20 years old. We'll check the condition of the existing coating first to make sure a fresh application will bond properly, whether you're in Auckland, Wellington, or anywhere else in New Zealand.
Restoration is usually a one-off project, but we recommend a maintenance check every few years afterward to catch small issues early. If your roof only needs a clean or a minor repair rather than a full restoration, let us know and we'll advise honestly on what it actually needs.
Some asbestos roofs may be suitable for a restoration approach that avoids unnecessary disturbance. We'll assess the roof and confirm the proposed method, scope and any applicable warranty in writing.
Flexible payment plans may be available, subject to approval and the applicable finance terms. We'll explain the available options with your quote.
Auckland, Wellington, Hamilton, and Tauranga are our busiest areas. We also cover the wider Waikato, Bay of Plenty, Manawatu-Whanganui, Hawke's Bay, Northland, and Taranaki regions. Get in touch and we'll confirm availability for your area.

Get started

Get started in three steps

  1. 1
    Tell us about your roof.Location, material, and what's happening.
  2. 2
    Speak with a specialist.We confirm if restoration is the right fit.
  3. 3
    Get your quote.Itemised, usually within 24–48 hours.
Start your roofing request
No obligation. Takes less than a minute
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.