Roof restoration vs re-roofing: which does your Adelaide home need?

If your roof's structure is sound and most of the tiles or sheets are in good condition, a roof restoration is usually the better value: the problems are on the surface and can be cleaned, repaired and re-coated. If the roof covering is failing across the whole roof, with porous or crumbling tiles, rust through the sheets, or leaks turning up in different places every winter, re-roofing is usually the better long-term spend. The honest answer depends on the roof in front of you, and sometimes a simple repair is enough.

What a roof restoration involves

A restoration sits between repairing and replacing. On a tile roof it usually means:

• A high-pressure clean to remove dirt, moss and lichen
• Ridge capping rebedded and repointed with flexible pointing (see our rebedding and repointing guide)
• Broken and slipped tiles replaced
• Valleys cleaned out and checked
• Where wanted, a protective membrane coating that seals and recolours the roof

On a metal roof, a restoration is a clean, treatment of any surface rust caught early, and a re-coat. More on what we do on our roof restoration page.

What re-roofing involves

Re-roofing replaces the roof covering entirely. The old tiles or sheets are stripped, the battens and structure underneath are checked, sarking is laid where needed, and the new roof goes on with new flashings, ridges and fixings rather than the old ones refitted. One of the most common versions in Adelaide is converting an ageing tile roof to Colorbond steel, which takes a heavy, high-maintenance roof off the house. See our re-roofing and roof replacement page for how we approach it.

Signs that point to a restoration

• The roof is faded, dirty or growing moss and lichen, but you are not getting leaks
• Mortar on the ridge capping is cracking, but the tiles are mostly whole
• A handful of broken or slipped tiles, not widespread damage
• Rust on a metal roof is isolated, for example around screws, laps or scratches
• You are selling and want the house to present at its best

Signs that point to re-roofing

• Repairs keep stacking up and the roof keeps failing in new places
• Tiles are cracking, delaminating or porous across the whole roof
• A metal roof has widespread rust, or rust has eaten through the sheets
• The battens or structure underneath have deteriorated
• You are renovating anyway and access is easy

Tile roofs vs metal roofs

Concrete and terracotta tile roofs are good candidates for restoration because individual tiles can be replaced and the capping can be rebedded. The tile itself often outlasts the mortar and coating. When the tiles become porous or brittle across the whole roof, a restoration is only putting off the inevitable.

Metal roofs are different. Surface rust caught early can be treated and re-coated. Once rust has gone through the steel, the affected sheets need replacing, and if it is widespread, the whole roof does. If you are weighing up a tile-to-Colorbond conversion, it is worth knowing that if your home is a heritage place or sits in a historic or character area, changing the roof material or look may need approval, so check with your council or PlanSA before you commit.

What does each cost?

Prices depend on roof size, pitch, storeys, access, the material, and how much repair is needed, so every roof is quoted individually. As published guides for budgeting:

Sources: What's The Damage? Adelaide roofing cost guide (updated October 2026) and Canstar roof restoration cost guide (updated 15 January 2025). These are published third-party ranges, not A1 Roofing prices. Canstar also notes that removing and refitting solar panels can add $700 to $2,000 to a roof job.

Other things that change the answer

• How long you plan to stay. If you are selling in a year or two, a restoration can lift the look of the house for a fraction of the cost. If you are staying for the long haul, the lifetime cost of repeated repairs matters more.
• Solar panels. If panels need to come off for the work, it can make sense to do the roof properly once rather than in stages.
• What is underneath. Rotten battens or water-damaged timber can tip the balance toward replacement, and you only find that out with a proper inspection.

How we give advice

Sam quotes every job himself and gives you a straight repair, restore or replace recommendation. Replacement is not always the answer, and if a repair will do, you will be told that too. A good photo of the roof through our quote form is often enough for a first opinion.