Metal roof restoration in Warragul
Keeping a corrugated iron or Colorbond roof in Warragul going: rust treatment, new fasteners, resealed laps, sheet swaps and coating, with guide prices.
Restoring a metal roof in Warragul means treating surface rust, replacing loose or failed fasteners and nails, resealing laps and penetrations, swapping out the few sheets that have rusted through, and then coating the roof. It suits corrugated iron or Colorbond that is faded and lightly rusted but still solid. Once rust has eaten holes through the sheets or along the laps across much of the roof, the money is usually better spent on new sheeting.
This site only passes your enquiry on. An independent local roof plumber assesses the roof, prices the work and does it.
When does restoration suit a metal roof?
The test is how deep the rust goes. A roof plumber will look closely at the sheets, the laps where sheets overlap, the fixings and the underside where it can be seen from the roof space.
| Condition | Restoration usually suits | Points towards re-roofing |
|---|---|---|
| Paint | Faded, chalky or flaking in patches | Bare metal over large areas |
| Rust | Light surface rust that cleans back to sound metal | Rust holes, or rust through the laps on several sheets |
| Fixings | Some loose, rusted or popped nails and fasteners | Fixings pulling out of rotted battens |
| Sheets | A few damaged sheets in one area | Many sheets thin or holed across the roof |
| Leaks | One or two leaks at a lap or penetration | Leaks in many places that keep coming back |
If the right-hand column describes your roof, read the metal re-roofing page. For a roof that sits somewhere in between, the repair, restore or replace guide sets out how to weigh it up.
What are the signs a metal roof needs attention?
- rust spots along the laps, at the bottom of sheets or around fixing heads
- nails that have lifted out of the sheets, which often rattle or let water in
- dull, chalky paint that rubs off on your hand
- small leaks near a vent pipe, flue or skylight
- rust staining dripping onto the gutter or the fascia below
- a loud tick or bang as the roof heats and cools, which can mean loose fixings
What does a metal roof restoration involve, step by step?
- Inspection of every face, the laps, ridges, flashings and penetrations, with photos.
- Fall protection planned and set up before work near the edges.
- Cleaning the roof and removing loose rust and flaking paint.
- Treating remaining surface rust with a suitable primer.
- Replacing popped nails with fasteners and swapping rusted or loose fasteners.
- Replacing any rusted-through sheets, matching the profile.
- Resealing laps, ridges and penetrations where needed.
- Applying the coating system the provider has specified, in dry weather.
Ask the provider to name the primer and coating system on the quote, how many coats it includes, and how long each coat needs to dry before rain.
Is a coating worth it on an old corrugated iron roof?
A coating protects sound metal and improves the look of the roof, but it adds no strength to steel that is already thin or holed. Before agreeing to one, ask the provider:
- how much rust treatment is included, and what it does with rust that will not clean back to bright metal
- whether the coating system suits galvanised iron, Colorbond or both
- how the laps and ridges are prepared, since rust often hides there
- what written warranty, if any, the coating maker or the provider offers, and what would void it
- how long the roof must stay dry after each coat
If the answers suggest the sheets are near the end of their life, ask for a re-roof price at the same visit so you can compare both options on paper.
What a careful roof plumber will check first
Before quoting, a careful provider will want to know how old the house is. For homes built or renovated before 1990, the Victorian Asbestos Hub lists corrugated roof sheets and ridge capping among the places asbestos can be found. A genuine steel sheet does not contain asbestos, but a corrugated cement sheet can look similar from the ground. A roof made of cement sheeting is not a metal roof at all, and the right path for it is on the asbestos roof replacement page. A good provider will not cut, drill or pressure-clean a sheet it suspects may contain asbestos.
A careful provider will also check the battens from the roof space where possible, because fasteners cannot hold in rotted timber, and will look at the gutters and flashings, since rust often starts where water sits.
How much does it cost to restore a metal roof in Warragul?
A Melbourne cost guide from What’s The Damage puts restoring a whole metal roof at $3,150 to $7,900. If all you need is one leak sealed at a lap or around a pipe, the same source gives $260 to $840 for a minor leak repair. Both bands come from Melbourne, so a quote for a Warragul house may differ.
The price moves with:
- roof size and pitch, and whether the house is one or two storeys
- how much rust treatment is needed before coating
- how many sheets need replacing
- the number of penetrations, such as flues, vents and skylights
Once you have photos of the worst sections, you can get a metal roof restoration quote and let the provider tell you whether restoring is still the better option.
Which licences and standards apply to metal roof work?
Metal roof coverings fall inside the roofing stormwater class under the Plumbing Regulations 2018, according to the Building and Plumbing Commission’s roofing stormwater page. Replacing sheets, refixing and resealing are therefore plumbing work, done by a plumber licensed in that class or by a registered plumber under a licensed plumber’s supervision. The same page lists cleaning, painting or preparation work as outside the class, so a business that only cleans and coats a roof does not need a plumbing licence for that part.
Once sheet replacement and refixing on your roof add up to over 750 dollars, counting parts, labour and GST together, you are owed a compliance certificate from the licensed plumber. The BPC compliance certificate page explains the rules. Ask for the certificate when sheets are replaced or the roof is refixed.
AS 1562.1 is the Australian Standard for sheet roof and wall cladding. Ask whether the replacement sheets and fixings follow it.
Metal roofs around Warragul and Darnum
Long, wet winters are hard on laps and fixings, and a metal roof facing the prevailing weather often shows rust first. Darnum, east of Warragul, sits beside the Moe River and is now a dairying district, so a property there may have a shed or outbuilding with a metal roof as well as the house. If you want the house and a shed done at the same visit, say so in your enquiry so the provider can plan for both. The Darnum area page has more on that town.
Next step: describe your metal roof
To help a provider judge whether your roof can be restored, include:
- close photos of the worst rust, a few fixing heads or nails, and a lap where two sheets overlap
- the roof profile, for example corrugated or a wider trimdek-style rib
- the approximate age of the house
- any leaks, and where they show inside
- whether a shed or outbuilding should be quoted at the same time
Then send your metal roof details with your suburb.
Frequently asked questions
- Can I paint my own corrugated iron roof?
Cleaning and painting are outside the plumbing class, but getting on a roof is work at height and the main risk is a fall. Any sheet replacement, refixing or resealing is plumbing work that needs a licensed roof plumber. Most owners leave the whole job to a provider with fall protection.
- Is it worth restoring a roof that already has a few rust holes?
Sometimes. If the holes are confined to a few sheets, those sheets can be replaced and the rest treated and coated. If rust has gone through the laps on many sheets, a new roof is usually the better use of money. Ask the provider to show you photos of the worst areas.
- Why are fasteners used instead of nails on a restored roof?
Roofing nails in older roofs can work loose as the sheets heat and cool, which lets water in around the hole. Fasteners with sealing washers hold more firmly. A provider may swap nails for fasteners as part of the job, so ask whether that is included in the price.
- How do I know if my roof sheets might contain asbestos?
You cannot tell for certain by looking. Homes built or renovated before 1990 may have asbestos cement sheets that resemble corrugated iron. Do not cut, drill or pressure-clean a suspect sheet. The Victorian Asbestos Hub explains how to have suspect material identified before any work starts.
- Can a Colorbond roof be repainted?
Yes, older Colorbond can be cleaned and recoated once the paint has faded, using a coating system suited to the steel. Ask the provider which system it uses, whether a primer is needed and how the new colour may affect heat absorption.