When it comes to a painting job, one of the first questions homeowners ask is whether to buy the paint themselves or leave it to the painter. The short answer: in most cases, letting your painter supply the paint leads to a better result — but there are situations where supplying it yourself makes sense. Here's what you need to know to make the right call.
Why Most Painters Prefer to Supply the Paint
Experienced painters generally prefer to source their own paint, and for good reason. They know exactly which products suit your surface, climate, and substrate — whether that's weatherboard, plaster, fibre cement, or GIB board. They also have trade accounts with suppliers like Resene, Dulux, and Wattyl, which often means access to trade-grade products not available off the shelf at retail stores.
Trade-grade paints typically offer better coverage, durability, and consistency than standard retail tins — meaning fewer coats and a longer-lasting finish.
The Markup Question: Is It Worth It?
Yes, painters usually add a margin to the paint they supply — this is standard practice and covers their time sourcing, transporting, and managing the product. However, because they buy at trade prices, the final cost to you is often similar to, or only slightly more than, retail pricing. As a rough guide, paint can represent anywhere from 10–25% of a typical painting job's total cost, though this varies widely depending on the project size and products used.
If a painter's quote includes paint, ask them to itemise the cost so you can compare. A reputable painter will be transparent about this.
When Supplying the Paint Yourself Makes Sense
There are a few scenarios where buying your own paint is a reasonable choice:
- You have leftover paint from a previous job and want to use it up (confirm the painter is happy to work with it first).
- You have a specific colour or brand in mind and want full control over the product.
- You're on a tight budget and want to reduce the painter's margin.
- You're doing a small touch-up job and already have the right product.
If you do supply the paint, make sure you buy enough. Running short mid-job can cause colour-matching headaches, especially if the tin batch changes. Most painters and paint suppliers can help you calculate the right quantity based on your surface area.
The Warranty Risk: A Key Consideration
This is where supplying your own paint can get complicated. Many professional painters offer a workmanship warranty on their jobs — but if you supply the paint and it fails (peels, bubbles, or fades prematurely), the painter may not be liable. They can only guarantee the quality of their application, not a product they didn't choose.
Similarly, paint manufacturers like Resene and Dulux may void their product warranties if paint is applied incorrectly or to an unsuitable surface — and a painter using a product they're unfamiliar with may not follow the manufacturer's system correctly. BRANZ research consistently highlights that paint system compatibility (primer, undercoat, topcoat) is critical to long-term performance.
Matching Paint to NZ Conditions
New Zealand's climate varies enormously — from the humid, salty air of coastal areas to the UV-intense summers of Central Otago and the damp winters of the West Coast. A good painter will select products suited to your specific environment. For example:
- Exterior weatherboard in a coastal zone needs a paint system with strong moisture and salt resistance.
- Fibre cement cladding (such as James Hardie products) requires specific primers and compatible topcoats.
- Interior walls in a bathroom or kitchen need washable, mould-resistant formulations.
If you supply paint without this knowledge, you risk choosing the wrong product for the job.
Questions to Ask Your Painter
Before deciding, have a conversation with your painter. Good questions include:
- What paint brand and product are you planning to use, and why?
- Can you show me the product data sheet?
- What warranty do you offer on your workmanship, and does it change if I supply the paint?
- How much paint will the job require?
- Are you happy to use a product I supply?
A professional painter will answer these confidently and without hesitation.
Tips If You Do Buy Your Own Paint
| Tip | Why It Matters |
|---|---|
| Buy 10–15% more than estimated | Avoids batch colour variation mid-job |
| Check the product is suitable for the surface | Wrong paint = poor adhesion and early failure |
| Confirm the painter is familiar with the brand | Unfamiliar products can affect application quality |
| Keep the receipt and tin lids | Useful for touch-ups and warranty claims |
| Ask about primer and undercoat needs | Topcoat alone is rarely enough on bare surfaces |
When to Call a Professional
For anything beyond a simple interior touch-up, it's worth engaging a qualified painter. Exterior repaints, new builds, and heritage properties all benefit from professional expertise in surface preparation, paint system selection, and application technique. A poor paint job can lead to costly remediation down the track. You can find qualified local painters on tradedirectory.co.nz.
Note that painting itself is not restricted work under NZ law — homeowners can legally paint their own homes. However, if painting involves working at height, WorkSafe NZ guidelines on ladder and scaffolding safety must be followed.
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