Why roofing scams and bad jobs can be costly
A roof is one of the most expensive and important parts of a home, so choosing the wrong roofer can create serious problems fast. In New Zealand, roofing work often happens after heavy rain, wind or hail, when homeowners are under pressure to get repairs sorted quickly. That urgency can make it easier for a dodgy tradesperson to rush the decision, collect money up front and disappear before the job is finished properly.
The risk is not just a leak that comes back after the next storm. Poor roof work can lead to damaged insulation, ceilings, framing, mould, and even disputes with your insurer if the work was not done properly or by the right person. If the job involves replacing roof structure, adding openings, changing loads, or other building work, you may also need council consent. And if the roofer is touching related systems such as plumbing or gasfitting, those parts of the job are restricted work and need appropriately licensed people.
The good news is that many red flags are easy to spot early if you slow down and ask the right questions.
The biggest red flags to watch for
Here are the warning signs that should make you pause before hiring a roofer.
| Red flag | Why it matters | What to do instead | |---|---|---| | Cash-only payment | Makes it harder to trace payments and can be used to avoid GST, tax, or accountability | Ask for normal invoicing and bank transfer/payment card options | | No written quote | Leaves you without a clear scope, price, or disputes process | Get at least 2-3 written quotes with the same details | | Large upfront deposit | You may be funding the job before any work is done, with little recourse if they vanish | Keep deposits reasonable and staged to actual progress | | No physical address or landline | Harder to verify the business if something goes wrong | Check for a real business address and contact details | | Pressure to sign immediately | A tactic to stop you comparing quotes or checking references | Take time to compare and sleep on it | | Refuses to show credentials | Could mean they lack experience, insurance or the right licence | Ask for proof and verify it independently | | Vague scope or “we’ll sort it on site” | Often leads to extras, arguments and uneven quality | Insist on clear inclusions, exclusions and materials | | No references or recent local work | Makes it harder to judge workmanship in NZ conditions | Ask for recent jobs and speak to previous customers | | Insists the job is “too small for paperwork” | Small jobs still need clear terms | Even minor repairs should have written confirmation |
Cash-only and off-the-books deals
A roofer who insists on cash only is not automatically dishonest, but it is a major warning sign, especially if they refuse to provide an invoice. Cash-only can make it harder to track what you paid, harder to prove the agreement, and harder to pursue the matter if the job goes bad.
It can also point to a business that is not properly set up or registered, or one that prefers to avoid GST and other obligations. That does not just matter for tax reasons. It can affect whether you get a proper receipt, whether the work is documented, and whether the business is traceable later.
What to look for instead:
- A written quote or estimate before work starts - An invoice showing the company name, NZBN or other business details, and GST if applicable - A payment trail, ideally by bank transfer or card - Clear terms about what is included and when payment is due
If someone pushes hard for cash because it is “cheaper”, ask yourself why the saving exists. In many cases, it is not a real saving once you factor in the risk of repairs, call-backs or insurance headaches.
No written quote or only a vague text message
A roofer who refuses to provide a written quote is giving you a clear signal. Verbal promises are easy to misunderstand, and text messages often leave out important details. In roofing, small differences in materials, flashing, underlay, edge details, scaffolding, and disposal can change the final cost a lot.
A proper quote should normally include:
- The full business name and contact details - A description of the roofing work - Materials to be used, including brand or profile where relevant - Whether removal and disposal of old roofing is included - Labour, access equipment, scaffold or edge protection costs - GST status - Timeframe and start date estimate - Payment schedule - Any exclusions, such as rot repair, timber replacement or council consent costs
If the quote is just a number with no detail, ask for clarification before you accept it. You want enough information to compare quotes fairly. A very low quote may look attractive, but if the scope is vague, you are more likely to pay for extras later.
Big deposits and payment demands before work starts
Some deposit is common in New Zealand, particularly if the roofer needs to order special materials or book subcontractors. But a large upfront deposit, especially if it is close to the full price, is risky.
Be cautious if the roofer:
- Wants most or all of the money before any work begins - Says they need cash today to “lock in the price” - Refuses staged payments tied to progress - Changes the payment terms after you ask questions
A reasonable approach is to pay a modest deposit and then stage the balance as the job progresses, or on completion once you have inspected the work. For larger projects, agree milestones in writing. This gives both sides clarity and reduces the chance of arguments.
Never pay a large amount just because the roofer claims material prices are about to rise or they have another job ready to start. Pressure does not equal professionalism.
No physical address, no local presence, no traceable identity
A trustworthy roofer should be easy to identify and contact. If the only contact is a mobile number and a social media account, or the business details seem thin, do more checking.
Red flags include:
- No physical address on the quote or website - No company name, or a name that does not match the invoice - A PO Box only, with no other contact details - No local references, even though they claim to work widely in your area - Different names used on the truck, invoice and bank account
This matters because roofing issues often show up after the tradesperson has moved on. If a leak appears after the next heavy Canterbury nor’wester, Auckland deluge or Wellington wind event, you need to know who to call and how to find them.
High-pressure sales tactics and “today only” offers
Pressure is one of the clearest signs you should slow down. A reliable roofer knows that homeowners usually want to compare quotes, check references and think through the cost. Dodgy operators try to stop that.
Watch for lines like:
- “If you don’t sign now, the price doubles.” - “We’re only in the area today.” - “You don’t need to compare anyone else.” - “I can start tomorrow, but only if you pay now.” - “This is a special deal, but it expires in an hour.”
These tactics are designed to make you react rather than think. Roofing is not a purchase you should rush. Even after storm damage, take enough time to get a second opinion if the roof is not actively failing in a way that puts your home at immediate risk.
If the roofer is genuinely busy, they should still be able to give you a written quote and realistic timing.
Poor answers about licences, insurance and compliance
Roofing itself is not a licensed trade in the same way as electrical work, but that does not mean credentials do not matter. Many roofing jobs still involve building work, and some parts of the project may require council consent depending on the scope. If the work changes the structure, affects weathertightness in a significant way, or involves a new roof covering over more than simple maintenance, check whether consent is needed before work starts.
Also be aware that some related trades are strictly regulated in New Zealand:
- **Electrical work** must be done by a licensed electrician or authorised person under the EWRB system. - **Plumbing, gasfitting and drainlaying** are restricted work and require appropriately licensed practitioners under the PGDB. - If the roofer is subcontracting any of these parts, ask who is doing them and what licence they hold.
Ask the roofer for:
- Public liability insurance details - Experience with similar roofs in your area - Any training, manufacturer accreditation or installer certification - The name of any subcontractors they use - Clarification on whether council consent is required
A dodgy tradesperson may become evasive when you ask these questions. That is exactly when you should be careful.
Suspiciously low prices and unrealistic promises
Everyone likes a good deal, but an unusually cheap roofing quote can be a warning sign if it is far below the others. It may mean the roofer has missed something, plans to cut corners, or intends to add charges later.
Be wary of promises such as:
- “We can fix any roof with one standard product.” - “You don’t need scaffolding or edge protection.” - “We can do it all without removing the old roof.” - “That timber rot won’t matter.” - “No consent needed, ever.”
A proper roofer should inspect the roof carefully, explain risks honestly, and tell you when there may be extra costs. For example, once old roofing is removed, hidden damage to timber or underlay may be revealed. A fair quote should say how those surprises will be handled.
What a trustworthy roofer should be happy to provide
A legitimate roofer will usually welcome reasonable questions. They should be comfortable providing:
- A written, itemised quote - Their business details and physical address - Proof of insurance - References or examples of recent work - A clear start date and expected duration - A sensible payment schedule - Information about warranties and maintenance - Advice on whether council consent or specialist trades are needed
If the roofer is reluctant to provide any of this, think carefully before proceeding.
How to protect yourself before signing anything
Use this simple checklist before you commit:
- Get at least 2-3 written quotes for the same scope of work - Compare what is included, not just the bottom-line price - Check the business details match the quote, invoice and bank account - Ask for references from recent local jobs - Confirm insurance and ask about workmanship guarantees - Check whether your job may need council consent - Make sure any electrical or plumbing-related work will be done by appropriately licensed people - Keep all messages, photos and documents in one place - Read the payment terms before paying a deposit
If you are dealing with storm damage, take photos before any temporary repairs and contact your insurer early if needed. Your insurer may have requirements about who carries out the work and how the claim is documented.
If you think you have already hired the wrong roofer
Act quickly if something feels off. Stop paying further money until you have written clarity on the work completed and what remains. Keep a record of:
- Quotes and invoices - Texts, emails and voicemails - Photos of the roof before, during and after the job - Names of the people who visited the site - Dates and times of work
If the roofer has taken money and disappeared, or the work is unsafe or clearly defective, get independent advice promptly. Depending on the situation, that may involve your insurer, the roofer’s dispute resolution process, the Disputes Tribunal, or advice from a consumer protection service.
The main lesson is simple: if a roofer makes it hard to get things in writing, hard to verify who they are, or hard to slow down and think, that is a warning sign. A professional roofer will respect your need to compare quotes, check credentials and understand exactly what you are paying for.