Why guarantees matter when hiring a joiner
Joinery work often sits at the point where craft, building performance and manufacturer products all meet. A wardrobe may be custom-made offsite, a kitchen installed in a wet area, or new timber windows fitted into an older villa. If something goes wrong, it can be costly and disruptive to fix.
That is why it is worth asking every joiner what guarantee they offer, what product warranties apply, and how they handle defects after completion. In New Zealand, a good written warranty does not replace your legal rights, but it does make the process clearer if there is a problem.
When comparing quotes, ask for more than just price. A slightly higher quote may include stronger workmanship support, clearer exclusions, and better after-service if a hinge, finish, or fit issue appears later.
The three layers of protection you should know about
For joinery work in New Zealand, homeowners usually have three different sources of protection:
- The joiner’s workmanship guarantee
- The manufacturer or supplier’s product warranty
- Your rights under the Consumer Guarantees Act 1993 (CGA)
These are separate, and they do different jobs.
| Protection | What it covers | Who is responsible | Typical issues |
|---|---|---|---|
| Workmanship guarantee | The quality of the joiner’s installation and labour | The joiner | Poor fit, misalignment, leaks caused by bad installation, damaged finishes |
| Product warranty | Defects in materials or manufactured components | The product maker, importer, or supplier | Faulty hinges, warped panels, defective paint or laminate, weak hardware |
| Consumer Guarantees Act | Goods and services must be of acceptable quality and fit for purpose | The trader who sold/installed them | Faulty work, delay, incomplete work, products not fit for the job |
A joiner should be able to explain which parts of the job are covered by each layer.
What a workmanship guarantee should cover
A workmanship guarantee is the joiner’s promise about their labour. It is usually the most important protection for a homeowner because many issues are not caused by the timber, board, or hardware itself, but by how it was measured, built, installed, sealed, or adjusted.
A practical workmanship guarantee should clearly state:
- the length of the guarantee
- what work is covered
- what counts as a defect
- how to report a problem
- whether call-out costs apply
- whether the joiner will repair, replace, or rework faulty items
- any exclusions, such as damage caused by leaks, movement, or misuse
There is no single standard guarantee period for joinery in New Zealand. Some joiners offer 6 or 12 months on labour, while others may offer longer on certain items. What matters most is that the terms are clear, in writing, and realistic.
Good workmanship guarantee signs
Look for joiners who are specific rather than vague. Good signs include:
- a written quote that names the guarantee period
- clear definitions of what is included
- a process for snagging or defects lists at handover
- willingness to return to adjust doors, drawers, or fittings after settlement
- documentation for any care requirements, such as ventilation or cleaning
Warning signs
Be cautious if a joiner:
- says they “stand by their work” but will not put anything in writing
- gives no timeframe for responding to defects
- excludes all problems after installation, even where workmanship is clearly at fault
- tries to shift every issue to the manufacturer without investigating the installation
Product warranties: what they are, and what they are not
Product warranties apply to the materials and components used in the job. In joinery, that may include:
- cabinet hardware and hinges
- drawer runners
- laminates and veneer surfaces
- timber boards or panels
- coatings, sealants, and adhesives
- glass or glazing components
- pre-finished components supplied by a manufacturer
A product warranty is usually provided by the manufacturer or importer, not the joiner. The joiner should pass on warranty documents and tell you how to make a claim if needed.
Important point: product warranty is not the whole story
If a cabinet door drops because the hinge failed, that may be a product issue. But if the hinge failed because it was poorly installed or the door was too heavy for the specified hardware, the joiner may still be responsible for the workmanship.
In other words, a supplier warranty does not let a joiner walk away from bad installation.
Ask these questions about product warranties
- Who is the warranty issuer?
- How long does the warranty last?
- Does it cover labour, or only replacement parts?
- Are there exclusions for moisture, UV exposure, or poor maintenance?
- Do I need to register the warranty?
- What documents will I receive on completion?
For any custom job, ask the joiner to list the key products and brands in the quote or contract. That makes later claims much easier.
How the Consumer Guarantees Act applies to joinery work
The Consumer Guarantees Act 1993 gives homeowners important rights when they buy goods and services from a business in New Zealand. A joiner’s work must be carried out with reasonable care and skill, and must be fit for the purpose you discussed.
For goods supplied by the joiner, the products must be of acceptable quality, safe, durable, and fit for their intended use.
The CGA cannot usually be contracted out of for household use, so a joiner cannot simply remove those rights with fine print.
Under the CGA, if joinery work is faulty, you may be entitled to:
- a repair
- a replacement
- a refund or price reduction in some situations
- compensation for reasonably foreseeable loss caused by the failure
If the issue is minor, the joiner usually gets a chance to fix it within a reasonable time. If the problem is serious, repeated, or not fixed, you may have stronger remedies.
What counts as faulty joinery work?
Examples can include:
- cabinets installed out of level so doors won’t close properly
- bench tops with poor joins or visible gaps from bad fitting
- doors or windows that stick because of incorrect measurement or installation
- inadequate sealing causing moisture damage
- unfinished edges or surfaces not completed to the agreed standard
- hardware fitted incorrectly or without the right load support
Normal wear and tear is different from a defect. A CGA claim is stronger where the problem is due to poor workmanship, defective materials, or failure to deliver what was promised.
Licensing, consents and other NZ compliance issues
Joinery itself is not a separately licensed trade in the way that electrical or some plumbing work is. However, the job can still involve regulated building work or other licensed trades.
In New Zealand, the joiner or builder may need to work with other professionals where the project involves:
- electrical work, which must be done by a suitably licensed person under the Electrical Workers Registration Board (EWRB) rules
- plumbing, gasfitting or drainlaying, which are restricted trades under the Plumbers, Gasfitters and Drainlayers Board (PGDB)
- building work that needs a building consent, which is assessed by the local council or consent authority
For example, a kitchen renovation may need consent if it involves structural changes, new plumbing layout, or changes affecting compliance. A joiner installing a new kitchen does not usually handle the consent process alone, but should know when it is required and coordinate appropriately.
A reputable joiner should also be familiar with moisture-sensitive areas, flashings, fixings, and the need for compliant installation around windows, wet areas, and external joinery. If the job involves alterations to a house built before the 1990s, ask how they handle older substrates, hidden damage, or asbestos risk.
What should be in the quote or contract
A strong quote is one of the best protections you have. Before work begins, ask for the details in writing. Ideally the quote should include:
- scope of work and drawings or plans if relevant
- materials, finishes, and hardware specifications
- who supplies what
- warranty and guarantee terms
- payment schedule
- expected start and completion dates
- who is responsible for removing waste and protecting existing surfaces
- any exclusions or assumptions
- how variations will be priced and approved
If the job is substantial, get multiple written quotes and compare the same scope. The cheapest quote is not always the best value if the warranty is weak or the specifications are vague.
What recourse you have if the work is faulty
If a joiner’s work is faulty, act quickly and document everything. In New Zealand, a sensible step-by-step approach is:
- Check the contract, guarantee, and product paperwork
- Take photos or video of the issue
- Notify the joiner in writing and describe the defect clearly
- Ask for a remedy and give a reasonable time to respond
- Keep records of all emails, texts, and calls
- If needed, seek independent advice or dispute resolution
Start with the joiner, because many issues are resolved by adjustment or rework. A good business will usually want the chance to put things right.
If the joiner refuses, delays unreasonably, or disputes responsibility, your next steps may include:
- contacting the product supplier or manufacturer for a separate warranty claim
- using a building or consumer dispute service if one is available
- applying to the Disputes Tribunal for lower-value disputes
- getting advice from Citizens Advice Bureau or a lawyer for more complex matters
If the issue relates to unsafe electrical work, gasfitting, or plumbing, do not attempt to fix it yourself. Engage the appropriately licensed tradesperson.
How to choose a joiner with better after-service
The best warranties are usually backed by a tradesperson who communicates well and documents their work properly. Before hiring, check:
- whether they have relevant experience with your type of job
- references or recent examples of similar work
- whether they are happy to provide a written guarantee
- whether they clearly explain exclusions and maintenance requirements
- whether they have public liability insurance
- whether they work with trusted suppliers who provide genuine product warranties
It is also sensible to ask how they handle seasonal movement. In New Zealand, timber can expand and contract with humidity and temperature changes, especially over winter or in coastal areas. A knowledgeable joiner will account for this in design, fixing, and finishing, rather than treating every movement issue as a warranty dispute.
Practical questions to ask before you sign
Use these questions to compare joiners fairly:
- What workmanship guarantee do you offer, and for how long?
- Which products or hardware come with separate warranties?
- If something is faulty, who do I contact first?
- Will you provide the warranty documents on completion?
- Are there maintenance requirements I need to follow?
- What happens if a supplier part fails after installation?
- Is any part of this project likely to need building consent or other licensed trades?
Getting clear answers upfront can save weeks of frustration later.
The bottom line
A good joiner should offer more than just a finished product. They should provide a clear workmanship guarantee, pass on product warranty information, and respect your rights under the Consumer Guarantees Act. For homeowners, the real value is not just a promise on paper, but a trade professional who stands behind the job and responds properly if something goes wrong.
Always get quotes in writing, compare more than price, and keep all warranty and compliance documents with your house records. If faulty work does occur, act promptly and in writing so you have the best chance of a quick, fair resolution.
