Apply the answer
Work through the condition before choosing the scope.
Use the symptoms, spread and repeat history first. RoofHub can help separate a plausible local repair from restoration, replacement or a case that needs inspection.
There are at least three credible pathways
| Condition | Possible pathway | What decides it |
|---|---|---|
| A few cracked/slipped tiles or local ridge/hip pointing defects | Local repair. | Replacement tile availability, condition of adjacent tiles, ridge/hip bedding/pointing and whether water entry is actually local. Sources: BRANZ. |
| Tile body broadly serviceable but surface/coating, pointing or selected details need work | Restoration may be considered after repairs. | Roof suitability, preparation, repairs, coating system and underlying roof condition. Sources: Roofing Association of New Zealand. |
| Widespread deterioration, repeated leaks/system failures or roof beyond useful repair | Replacement / system conversion comparison. | Whole-roof condition, underlay, battens/support, valleys/flashings and project economics. Sources: Roofing Association of New Zealand; Roofing Association of New Zealand. |
Do not judge the roof only by tile colour
Visible fading or surface weathering is different from cracked/slipped tiles, failed ridge/hip work, damaged valleys/flashings, underlay issues or supporting-system problems. A coating decision should follow a condition assessment and repairs, not replace them. Sources: Roofing Association of New Zealand; BRANZ.
Useful questions before accepting a restoration or replacement proposal
- How many tiles are damaged, and is damage clustered or widespread?
- Are ridge/hip bedding and pointing locally defective or failing broadly?
- What condition are valleys, flashings and penetrations in?
- Is the underlay accessible/known, and are there signs of repeated moisture entry?
- Are replacement tiles compatible and available?
- What exact defects will coating/restoration fix - and what will it not fix?
- If replacement is proposed, is it like-for-like tile or a conversion to another roof system, and what structural/detail changes follow?
What if you are considering changing from tile to metal?
Changing roof system is a separate design/scope decision from deciding whether the existing roof is repairable. Weight, battens/purlins, flashings, geometry, insulation/underlay and consent/RBW context may all need review. Sources: Roofing Association of New Zealand; Building Performance.
Sources and review notes
Prepared by RoofHub editorial team. Reviewed . A source check confirms what a page states, not an independent inspection or invoice audit. Published project accounts are attributed to their publishers.
- primaryBRANZ: Good Repair Guide: Clay and concrete roof tiles (2016-04-01) - BRANZ repair-guide catalogue page states the guide focuses on repair options for isolated clay and concrete tile roof concerns, while noting the publication should be read with current Code requirements and standards. The full guide is paid content; RoofHub does not reproduce it. Page checked 2026-10-21. Publication date shown above. · industry guidance
- primaryRoofing Association of New Zealand: New Zealand Roof Coating Code of Practice - RANZ roof-coating trade guidance. It states that roof coating is not weatherproofing, requires an initial roof-condition assessment, and only extends the life of a suitable existing roof for a limited time. Page checked 2026-10-21. Publication date not stated. · industry-technical
- primaryRoofing Association of New Zealand: Maintenance Tips - RANZ homeowner maintenance guidance covering drainage, signs of deterioration and working-at-height safety. Used as practical industry context alongside product-specific manufacturer requirements. Page checked 2026-10-21. Publication date not stated. · industry-technical
- primaryRoofing Association of New Zealand: RANZ Re-Roofing Guide - RANZ describes this as an annually updated NZ consumer guide to reroofing materials, systems, terminology, scope and workmanship. Used for project-planning context rather than contractor ranking. Page checked 2026-10-21. Publication date not stated. · industry-technical
- marketHomeSmart Roofing: Concrete tile roof repairs and restoration - Auckland practitioner guide describing local tile replacement, ridge/hip pointing and broader restoration as alternatives to full replacement where damage is not widespread. Commercial service source. Commercial interest: sells roofing services. Page checked 2026-10-21. Publication date not stated. · practitioner observation
- marketWilly Marsh Roofing: Roof restorations and re-coating - Auckland roofing contractor with stated 25+ years of hands-on experience. Describes restoration as appropriate only where the roof system remains suitable, with tile/ridge/flashing repairs completed before recoating. Commercial source. Commercial interest: sells roofing services. Page checked 2026-10-21. Publication date not stated. · practitioner observation
- marketCowperthwaite Roof Restorations: Full concrete tile roof restoration project - Project-specific Auckland restoration account for a 25-year-old Monier concrete tile roof describing replacement of cracked tiles, cleaning, repointing, sealing and coating. Commercial restoration source; outcome is publisher-reported. Commercial interest: sells roofing services. Page checked 2026-10-21. Publication date not stated. · practitioner observation
- marketRoof Restore: Concrete Tile Roof Restoration, Torbay - Auckland restoration contractor case study reporting an older concrete-tile roof whose substrate was considered structurally sound, with cracked tiles, apron-flashing work and ridge/hip pointing addressed before recoating. RoofHub uses the condition-and-scope sequence as practitioner evidence, but does not adopt the provider-specific life-extension, price-comparison, coating-performance or warranty claims as general facts. Commercial interest: sells roofing services. Page checked 2026-10-21. Publication date not stated. · practitioner observation
- marketRoof Repair Specialists: Repair, restore or reroof? - Auckland contractor site showing repair, restoration and reroof pathways plus project examples. The business states it was established in 2014 and has completed 500+ Auckland roofs. Commercial source; individual project accounts are treated as practitioner observations, not general rules. Commercial interest: sells roofing services. Page checked 2026-10-21. Publication date not stated. · practitioner observation
- primaryBuilding Performance: Check if you need consents (2026-01-15) - MBIE Building Performance guidance. All NZ building work must comply with the Building Code; some low-risk work is exempt from consent, and owners should confirm uncertain cases with their council or an appropriate professional. Page checked 2026-10-21. Publication date shown above. · government
Original calculations are labelled as examples. Historical prices stay dated, missing fields stay unknown, and conflicting specifications are flagged. Sources are not endorsements or paid rankings. Read our methodology or report a correction.
Keep exploring
Next step
Estimate it, refine it, or ask RoofHub.
Start with approximate information, use actual measurements when you have them, or ask RoofHub to explain the decision. A roofing contractor still needs to confirm the site, specification and final quotation.