Should Your Plasterer Be Insured? What NZ Homeowners Need to Know

Why insurance matters when hiring a plasterer

Plastering work can look straightforward, but it often happens around freshly built interiors, renovated rooms, ceilings, scaffolding, ladders, and dusty conditions. If something goes wrong, the cost of fixing damage can quickly run into the thousands. That’s why a plasterer’s insurance is not just a box-ticking exercise — it can be the difference between a smooth job and an expensive dispute.

For NZ homeowners, the key question is not simply “Are they insured?” but “What are they insured for, and does it actually cover the type of work they’re doing in my home?”

Insurance matters because plasterers can be involved in situations such as:

• accidental damage to walls, flooring, windows, cabinetry, or finished paintwork
• injuries to third parties, visitors, or neighbouring property owners
• fire or water damage caused by site activities, equipment, or stored materials
• theft or loss of tools that delays the job
• a workmanship issue that needs remedial work after the job is complete

A genuine professional should be able to explain their cover clearly and provide evidence when asked.

The main types of insurance a plasterer should carry

Not every plasterer will carry every type of cover, but there are several policies NZ homeowners should expect to see or at least ask about.

Public liability insurance

This is the big one. Public liability insurance is designed to cover injury or property damage caused to third parties. For homeowners, it’s the most relevant type of cover because it may help if a plasterer accidentally:

• chips a benchtop or damages a timber floor while moving gear
• cracks a window while carrying materials
• causes water damage by mishandling prep or clean-up
• injures a visitor or delivery person while working at your property

A plasterer doing interior work in a lived-in home should typically have public liability cover. It is especially important if the job involves:

• scaffolding or work at height
• occupied homes where family members are coming and going
• renovation sites with multiple trades onsite
• heritage or high-value finishes where accidental damage is costly

Contract works insurance

Contract works insurance covers physical damage to the work while it is underway. This can be especially relevant on renovation or new-build jobs where a wall, ceiling, or decorative finish is still incomplete and therefore more vulnerable.

For example, if a burst pipe, storm event, or other insured incident damages freshly completed plaster work before handover, contract works insurance can help cover the loss. This can protect both the homeowner and the tradie from arguing about who pays to redo the job.

Tools and equipment insurance

Plasterers rely on tools, mixers, sanding gear, ladders, and sometimes mobile access equipment. In New Zealand, tool theft from vehicles and sites is unfortunately common.

This cover does not directly replace damaged walls or ceilings, but it can help a tradesperson get back on site quickly rather than losing days or weeks replacing equipment. For homeowners, that can mean fewer delays and less disruption.

Professional indemnity insurance

Professional indemnity is more common for designers, consultants, and some specialist trades than for basic finishing work. But if a plasterer is advising on systems, products, or finishes in a way that goes beyond simple labour, it may be worth asking whether they carry it.

This cover is about financial loss caused by professional advice or specification errors rather than accidental damage.

What insurance does — and doesn’t — protect the homeowner from

A common misunderstanding is that a plasterer’s insurance automatically covers every possible problem. It doesn’t.

Insurance may help with:

• accidental property damage
• third-party injury claims
• damage to work in progress
• delays caused by insured events, depending on the policy

Insurance usually does not cover:

• poor workmanship that simply needs to be fixed because it was done badly
• disagreements over the scope of work or a price dispute
• damage caused by pre-existing issues in your home
• work outside the policy terms or exclusion list
• deliberate or reckless behaviour

That’s why the contract and scope matter as much as the insurance. A good quote should spell out what is included, what surface preparation is needed, who supplies materials, and what finish level is being delivered.

Is insurance legally required in New Zealand?

For most plastering work, there is no single law that says every plasterer must hold public liability insurance. However, many reputable tradespeople carry it because clients, builders, and principal contractors expect it.

That said, insurance expectations can vary depending on the job:

• On larger renovation or commercial projects, a builder or main contractor may require minimum cover.
• On new builds, the site manager may ask for certificates before allowing trades on site.
• For smaller residential jobs, homeowners may still reasonably ask for proof of cover before work starts.

Also keep in mind that plastering may form part of broader building work. If the job is part of a renovation that affects structure, weather-tightness, or other building elements, the wider project may need to comply with the Building Act and could require a building consent from the local council. Insurance does not replace the need for consent, licensed trades where required, or proper workmanship.

How insurance protects you in real-world plastering jobs

Here are some practical examples of where cover can make a real difference.

• Ceiling work in a renovated villa: A ladder slips and damages polished timber flooring. Public liability may help with the repair bill.
• Multi-trade renovation: A plasterer accidentally knocks over a bucket and damages a newly installed carpet. Liability cover can be critical.
• Staging a job over several days: A water leak damages newly completed plaster before the room is handed over. Contract works cover may help.
• Tool theft from a ute parked overnight: The plasterer can’t return the next day without replacements. Tool cover can reduce delay.

For homeowners, the benefit is simple: if a mistake, accident, or insured event occurs, there is a financial backstop rather than relying on a verbal promise to “sort it out later”.

How to confirm a plasterer’s insurance is real and current

Don’t just accept “Yep, I’m covered.” Ask for evidence.

Ask for a certificate of currency

A certificate of currency is the standard proof document showing:

• the insurer’s name
• the policyholder’s name
• the type of cover
• policy limits
• the expiry date

Check that the business name on the certificate matches the person or company quoting for your job.

Check the coverage limit

For residential plastering, the limit should be high enough to cover a serious damage claim. There is no single magic number for every job, but you want to know the maximum payout per claim and whether it is enough for your property.

If the plasterer is working in a high-value home, around expensive finishes, or near newly installed joinery, ask whether the policy limit is appropriate.

Ask what is excluded

Exclusions matter. A policy might not cover:

• work carried out after hours without disclosure
• damage to items in the plasterer’s care, custody, or control
• subcontractors not named or covered under the policy
• certain types of water ingress or surface preparation issues

If a plasterer cannot explain exclusions in plain English, that’s a red flag.

Confirm who is actually doing the work

If the person quoting plans to use subcontractors, ask whether they are insured too. Your protection can be weakened if an uninsured subcontractor is used under the main contractor’s job.

Check business details and paperwork

Before accepting a quote, compare:

• the company name on the quote, invoice, and insurance certificate
• the NZBN, if provided
• contact details and physical address
• the scope of work and start/finish dates

A reputable plasterer should have no issue providing these.

Other credentials worth checking alongside insurance

Insurance is important, but it should be part of a wider hiring check.

Ask for:

• Written quotes from at least two or three plasterers so you can compare scope, not just price
• References or photos of recent work, especially for similar homes or finishes
• Evidence of experience with the finish you want, whether that’s interior stopping, decorative plaster, ceiling repairs, or exterior coating preparation
• Any relevant qualifications or industry memberships if they claim specialist expertise
• Confirmation of how they handle defects or touch-ups after completion

If the plastering is part of a larger renovation, also ask how their work will fit around other trades and whether they will coordinate timing to avoid rework.

Red flags that should make you pause

Be cautious if a plasterer:

• refuses to show proof of insurance
• only gives a verbal quote and no written scope
• can’t explain what their policy covers
• says insurance is “not needed” because the job is small
• offers a much lower price but excludes prep, clean-up, or remedial work
• wants full payment upfront without a clear milestone schedule

A low quote can become expensive if you later discover there is no realistic cover for damage or delay.

What to put in the contract before work starts

Once you’ve chosen a plasterer, make sure the paperwork is clear. A simple written agreement should include:

• full name of the contractor or company
• insurance details and policy expiry date, if provided
• exact scope of plastering work
• materials included and excluded
• start and expected completion dates
• payment terms and deposit amount
• who is responsible for protecting floors, furniture, and adjacent finishes
• how defects, damage, and variations will be handled

If the job is part of regulated building work or requires council consent, make sure the responsibilities are clearly assigned and the necessary approvals are in place before work starts.

The bottom line for NZ homeowners

Yes — your plasterer should ideally be insured, and in practice public liability insurance is the main cover you should ask about. It won’t guarantee perfect workmanship, but it can protect you from expensive accidents and property damage.

The smartest approach is to treat insurance as one part of the hiring process, not the only part. Get multiple written quotes, check the scope carefully, ask for a certificate of currency, and confirm who is actually doing the work. A few minutes of checking now can save a lot of stress later.