A roof restoration cleans, repairs and recoats an existing roof and suits a structurally sound roof whose surface is tired: tiles mostly intact, battens and sarking in good order, and no widespread leaks. Replacement suits roofs with crumbling or porous tiles, steel rusted through, failing battens or repeated leaks. If the problems are underneath the surface, a coating will not fix them.
Two different jobs
Restoration keeps the existing roof covering and brings it back into good order. On a tile roof, that usually means cleaning, replacing broken tiles, re-bedding and re-pointing ridge and hip capping, fixing flashings and valleys, and often applying a coating. On a steel roof, it means treating surface rust, replacing failed screws and flashings, and coating.
Replacement removes the covering down to the rafters and installs a new roof, with new battens where needed, sarking or blanket, flashings and capping. See roof replacement for the full scope.
The live version of this guide treated restoration as a cure-all. It is not. The decision depends on what is happening underneath the surface.
When restoration makes sense
Restoration is a good fit when:
- the tiles are mostly sound, with only a few cracked or broken;
- the ridge capping needs re-bedding but the roof line is straight;
- battens and sarking are in good order when checked from the roof space;
- leaks are isolated and traceable;
- on steel, rust is on the surface rather than through the sheet;
- the owner wants to improve appearance and extend the roof's life for a period.
In those cases, a careful restoration can be good value.
When replacement is the better spend
Replacement is usually wiser when:
- concrete tiles have lost their surface and are porous or crumbling;
- tiles crack when walked on;
- steel sheets are perforated or rust is widespread at laps and fixings;
- battens are soft, split or sagging;
- there are leaks in several places or the same leaks keep returning;
- the roof contains asbestos cement, which should not be cleaned, sanded or coated without specialist advice;
- the house needs tie-down upgrades to suit its wind classification, which is far easier with the roof off.
A coating cannot fix rotten battens, porous tiles or rusted-through steel. It can hide them for a while.
Gold Coast factors
Humidity and lichen. Restorations here often start with heavy lichen and mould removal. That is fine on sound tiles, but cleaning can reveal how worn the surface really is.
Storms. Restoration does not change the roof's fixings. If tie-downs are inadequate, a storm can still lift caps or sheets.
Salt. Coating steel near the beach slows corrosion only if the rust is removed properly and the product suits marine conditions. Perforated steel near the surf needs replacing.
Heat. Light-coloured coatings can reduce heat absorption on tile and steel. So can a new roof with a blanket underneath. See energy-efficient roofing materials.
Comparing the cost honestly
Restoration costs less upfront. Replacement costs more but resets the clock. To compare fairly, think about how many years each option will give before the next major spend. If a restoration is likely to buy only a few years on a roof that is near the end, the cost per year may be higher than a replacement. Our cost guide gives 2026 bands for replacement and repairs.
Questions to ask a contractor
- What did you find in the roof space: battens, sarking, water marks?
- How many tiles or sheets need replacing?
- What is the condition of the tile surface or steel under the coating?
- Which coating product, how many coats, and is there a data sheet and written warranty?
- Will restoration address the leaks I have, and how will you confirm the source?
- What would replacement involve, and roughly how do the two compare over time?
A contractor who offers only one option without showing you evidence deserves a second opinion.
Watch for high-pressure sales
Door-knocking restoration offers, especially after storms, can push owners into quick decisions. Take time. Get a written scope, check the QBCC licence on the QBCC online search, and compare at least two quotes.
Asbestos roofs
If your roof may contain asbestos, do not let anyone pressure clean, sand, cut or coat it until it has been assessed. Workplace Health and Safety Queensland regulates work with asbestos. See asbestos roof replacement.
Making the decision
- Get an inspection that includes the roof space.
- Ask for photos of the worst areas.
- Ask for both options to be priced if the roof is borderline.
- Think about how long you plan to stay in the house.
- Decide on evidence, not on the lowest headline price.
Read signs you need a roof replacement to see where your roof sits, then call 07 5241 1403 or use the form below for a free inspection.
General information about roofs on the Gold Coast, not advice about your roof. Rules, products and programs change; check with the body named (QBCC, City of Gold Coast, Workplace Health and Safety Queensland) before you act.