How do I know if my roof needs repair or replacement?

Six factors matter most: roof age, number of recent leaks, extent of visible damage, structural sag/ceiling staining, energy bill changes, and how long you'll stay in the home. Use Crown Roofers' free 6-question quiz to score these and get a clear repair-vs-replace recommendation with cost estimates.

At what age does a roof typically need replacement?

Colorbond and metal roofs commonly last 30–50 years. Concrete tile roofs typically last 30–50 years but may need re-pointing and re-bedding at 20–30 years. Terracotta tile roofs can last 50–75 years with proper maintenance. Over 30 years old with multiple issues, full replacement is usually more cost-effective long term than ongoing repairs.

How much does a roof repair cost in Sydney?

Minor repairs typically run $300–$800 (a few broken tiles, small leak fix). Targeted repairs across multiple sections cost $1,500–$3,500. Extensive repairs approaching partial replacement run $4,000–$8,000. Crown Roofers gives a free written quote before any work begins.

How much does a roof replacement cost in Sydney?

Full roof replacements in Sydney range $12,000–$35,000. Colorbond re-roofs sit at the upper end ($15,000–$35,000), concrete and terracotta tile re-roofs around $12,000–$28,000. Factors: roof size, pitch, access difficulty, material choice, and whether battens/sarking need replacement.

What's the biggest red flag that means replace not repair?

Visible sagging or dips in the ridge line. That signals rotted rafters or structural overload — often from old concrete tiles plus water saturation. This is unsafe and not repairable in isolation. It requires a licensed roof plumber on-site within days and usually means a full structural and roof replacement.

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60-second diagnostic

Should I repair or replace my roof?

Answer 6 questions. We'll score your roof on age, leaks, damage, structure, energy and time horizon — then tell you whether targeted repair, partial replacement, or full re-roof is the smart call. With Sydney cost ranges for each.

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