Is roof restoration worth it compared to replacement?

If the structure and most tiles or sheets are sound, restoration at $2,500 to $6,000 buys 10 to 15 more years for a fraction of a full replacement at $10,000 to $40,000. Replace when there is widespread rust, sagging or leaks that keep returning after repairs. Per-square-metre comparisons help: Colorbond re-roofing runs $80 to $180 and tile re-roofing $100 to $220. Tip: get a restoration quote and a replacement quote from the same roofer and make them argue the case.

Full ranges, drivers and sources: Roofing and Gutters cost guide. See also: House Painting cost, Concreting cost, Handyman Rates cost.