Yes, a reputable roof painter should always provide a written contract before any work begins. In New Zealand, a written agreement protects both the homeowner and the tradesperson — it sets clear expectations, reduces disputes, and gives you legal recourse if something goes wrong. Verbal agreements can be difficult to enforce, so getting everything in writing is simply good practice.
Why a Written Contract Matters
A written contract is your primary protection when hiring any tradesperson. Without one, disagreements about scope, price, or finish quality become a matter of "he said, she said." New Zealand's Consumer Guarantees Act 1993 and Fair Trading Act 1986 do offer some baseline protections for consumers, but a solid written contract makes it far easier to resolve disputes quickly and fairly.
For roof painting specifically — which can involve significant costs, scaffolding, specialist coatings, and multi-day work — the stakes are high enough that a handshake deal simply isn't good enough.
What a Roof Painting Contract Should Include
A professional roof painter's contract should cover the following key points:
- Scope of work — exactly what will be done (pressure washing, moss/lichen treatment, priming, number of topcoats, ridge capping, flashings, etc.)
- Products to be used — brand, product name, and colour. Reputable NZ brands include Resene, Dulux, and Wattyl, all of which offer roof-specific coatings with documented specifications.
- Surface preparation details — how the roof will be cleaned and treated before painting begins
- Number of coats — this directly affects durability and warranty
- Total price and payment schedule — including GST, deposit amount, and when the balance is due
- Start and estimated completion dates
- Warranty terms — both the painter's workmanship warranty and the product manufacturer's warranty
- What happens if extra work is needed — a variation clause so you're not surprised by unexpected costs
- Scaffolding and health & safety arrangements
- Dispute resolution process
Payment Terms: What's Reasonable?
A reasonable deposit for roof painting work is typically 10–30% of the total job cost, paid upfront to cover materials. Be cautious of any painter asking for more than 50% before work starts — this is a common warning sign. Progress payments tied to milestones (e.g., after preparation, after first coat) are normal for larger jobs. Never pay the full amount until you are satisfied with the completed work.
| Payment Stage | Typical Timing |
|---|---|
| Deposit | Before work begins |
| Progress payment | After preparation / first coat |
| Final payment | On satisfactory completion |
Warranties: Read the Fine Print
A quality roof painting job should come with a workmanship warranty from the painter (commonly 5–10 years for a full repaint) and a separate product warranty from the paint manufacturer. These warranties are usually only valid if the correct preparation and application processes were followed — another reason to have the specific products and methods documented in your contract.
Check that the painter's warranty is backed by their business (not just a verbal promise) and ask whether they carry public liability insurance. If a painter damages your roof or property during the job, you want to know they're covered.
Red Flags to Watch For
- No written quote or contract offered
- Pressure to sign immediately or pay cash upfront
- Vague descriptions like "two coats of roof paint" with no product specified
- No mention of surface preparation
- Unwillingness to provide references or proof of insurance
For guidance on choosing tradespeople and understanding your consumer rights, Consumer NZ is a useful resource.
Health & Safety on the Job
Roof painting involves working at height, which is a significant hazard. Under New Zealand law, your painter must comply with WorkSafe NZ requirements for working at height, including appropriate scaffolding or fall-arrest systems. Your contract should reference how these obligations will be met. As a homeowner, you also have a duty to ensure your property is a safe worksite — ask your painter how they plan to manage this.
Does Roof Painting Require a Building Consent?
In most cases, repainting an existing roof does not require a building consent — it is generally considered maintenance. However, if the work involves structural repairs or changes to the roof material, consent may be required. Always check with your local council if you're unsure. The MBIE Building Performance website has helpful guidance on what work requires consent.
When to Call a Professional
Roof painting is not a DIY-friendly job for most homeowners. Working at height carries serious injury risks, and incorrect preparation or product selection can void warranties and cause premature coating failure. Always hire a qualified, experienced roof painter. You can find local roof painting professionals on tradedirectory.co.nz.
If your roof has underlying damage — cracked tiles, rusted iron, or failing flashings — these issues should be assessed and repaired by a qualified roofer before painting begins. A good roof painter will flag these problems in their assessment.
Master Painters NZ member
Licensed Building Practitioner (LBP)
Roofing Association of NZ (RANZ)
