Asbestos Roof Removal Auckland: Simple Homeowner Guide to Removing an Asbestos Roof Safely

A Plain-English Guide for Homeowners

Asbestos roofing is one of those old-house problems that sits quietly above your head until it becomes a real headache. You might be planning a re-roof, selling the house, fixing leaks, or dealing with cracked old Super Six, decramastic tiles, asbestos cement sheets, or old garage roofing.

The big thing to know is this: don’t muck around with asbestos roofing like it is normal building rubbish. It is not just “old roof stuff.” If it is cut, smashed, drilled, water-blasted, dropped, dragged, or handled badly, asbestos fibres can be released. Those fibres are the nasty bit.

This guide explains, in simple homeowner language, what actually happens when asbestos roofing is removed from a house in New Zealand.

WorkSafe New Zealand explains that more than 10m² of non-friable asbestos must be removed by a licensed asbestos removalist, and friable asbestos must be removed by a Class A licensed removalist. Most asbestos cement roofing and decramastic roofing is treated as non-friable asbestos, unless it is badly damaged, crumbly, burnt, contaminated, or breaking down.

First: how do you know if your roof has asbestos?

You cannot reliably tell just by squinting at it from the driveway.

Common asbestos roofing materials in Auckland homes include:

• Old Super Six asbestos cement roofing
• Corrugated asbestos cement sheets
• Old garage or shed roofing
• Decramastic roof tiles with asbestos backing or asbestos-containing material
• Asbestos cement barge boards, soffits or ridge pieces
• Old flat sheets around lean-tos, carports and sleepouts

A lot of homes built or renovated before the late 1980s and even into the 1990s can still contain asbestos-containing materials. The safest way to confirm it is through asbestos testing by a competent person or asbestos surveyor.

For homeowners, the first step is simple:

Don’t break it. Don’t water-blast it. Don’t sand it. Don’t drill it. Get it checked.

Step 1: Get the roofing material tested

Before any roofer, builder, painter or handyman starts work, the roofing material should be identified.

A small sample can be taken safely and sent to a laboratory. This confirms whether the roof contains asbestos.

Why this matters:

• It prevents accidental exposure.
• It tells the roofer what they are dealing with.
• It helps price the job properly.
• It helps decide whether a licensed asbestos removalist is needed.
• It avoids the classic disaster: “We started pulling it off and then realised it was asbestos.”

If the roof is over 10m², the job will usually need a licensed asbestos removalist if asbestos is confirmed. WorkSafe states that unlicensed removal is limited to up to 10m² of non-friable asbestos, and you cannot dodge the rule by splitting a bigger area into little 10m² chunks.

Step 2: Choose a licensed asbestos removalist

For most home asbestos roofing jobs, you want a Class B asbestos removalist. Class B licence holders can remove non-friable asbestos-containing material, which is what most asbestos cement roofing is. WorkSafe’s licensing overview says a Class B licence allows removal of any amount of non-friable asbestos or asbestos-containing material, while Class A covers friable asbestos and any type or amount of asbestos.

Before you hire anyone, ask:

• Are you a licensed asbestos removalist?
• Is this Class A or Class B work?
• Who is the nominated supervisor?
• Will you prepare an Asbestos Removal Control Plan?
• Will you notify WorkSafe if required?
• How will the roof be removed without breaking it up?
• Where will the asbestos waste go?
• Will there be a clearance inspection?

You can check licensed asbestos removalists through the WorkSafe asbestos licence holder register.

Step 3: The asbestos removalist prepares a plan

A proper asbestos roofing job should not start with someone throwing sheets into a skip.

The removalist should prepare an Asbestos Removal Control Plan, often called an ARCP. This is the job plan that explains how the asbestos will be removed safely.

The plan should cover:

• The address and work area
• Type of asbestos roofing
• Size of the roof area
• Who is supervising the job
• How the roof sheets or tiles will be removed
• How dust will be controlled
• PPE and respiratory protection
• Exclusion zones
• Waste wrapping and disposal
• Emergency procedures
• Decontamination steps
• Clearance process

This is the boring paperwork that stops the job turning into a neighbourhood drama.

Step 4: WorkSafe notification may be required

For licensed asbestos removal work, the licensed removalist must generally notify WorkSafe before the work starts. Under the Health and Safety at Work (Asbestos) Regulations 2016, a licensed asbestos removalist must give WorkSafe written notice at least 5 days before licensed asbestos removal work starts, unless a specific exception applies.

For a homeowner, this means you should not be surprised if the job cannot start tomorrow morning. There is usually planning and notification time involved.

Good asbestos removal is not cowboy work. It is staged, planned and controlled.

Step 5: Set up the work area

Before the roof comes off, the removal team sets up the area.

This may include:

• Warning signs
• Barrier tape or temporary fencing
• Exclusion zones
• Drop sheets or ground protection
• Controlled access points
• Decontamination area
• Waste wrapping area
• Tools and equipment set up
• Neighbour protection if close to boundaries
• Weather checks

Weather matters. Asbestos roofing should not be removed in strong wind where dust and fragments can travel. Rain can also create slip hazards and make roof work more dangerous.

The site should look controlled, not like a weekend demolition bee.

Step 6: The roof is removed carefully

The aim is to remove asbestos roofing whole, slow and wet-controlled where appropriate — not smashed into pieces.

A safe asbestos roof removal process usually includes:

• Keeping material intact as much as possible
• Avoiding power saws, grinders and abrasive cutting
• Avoiding dropping sheets from height
• Using hand tools where possible
• Lowering sheets carefully
• Wetting or misting where needed to reduce fibre release
• Removing fixings carefully
• Wrapping or bagging asbestos waste correctly
• Cleaning as the job progresses

The rough rule is:

If the roof is being smashed, snapped, thrown, dragged or dry-cut, something is wrong.

Asbestos cement roof sheets can become brittle with age. That means workers also need fall protection and safe access. This is not just an asbestos job. It is also a working at height job.

Step 7: Waste is wrapped, labelled and disposed of properly

Asbestos waste cannot go into a normal skip bin as loose rubbish.

It needs to be:

• Double wrapped or placed in suitable asbestos waste bags
• Sealed
• Labelled as asbestos waste
• Kept secure
• Transported safely
• Disposed of at a facility that accepts asbestos waste

The removalist should be able to tell you where the asbestos waste is going and provide disposal evidence if requested.

This step matters because dodgy disposal can come back to bite homeowners, contractors and the environment. Asbestos waste dumped or mixed into normal rubbish is not just poor form; it can create real health and legal problems.

Step 8: The area is cleaned

Once the roof is removed, the area should be cleaned using asbestos-safe methods.

That may include:

• Wet wiping
• Use of suitable asbestos-rated vacuum equipment where required
• Checking gutters, ground sheets and work areas
• Removing small fragments
• Checking screw holes, battens and surrounding surfaces
• Making sure no asbestos debris is left behind

A normal household vacuum is not suitable for asbestos dust. Neither is a leaf blower. That should be obvious, but somehow common sense sometimes falls off the scaffold.

Step 9: Clearance inspection

For many jobs, especially where a licensed removalist is used, a clearance process is completed before the area is handed back.

Depending on the type and risk of the work, this may involve a visual inspection and sometimes air monitoring or clearance certification by a competent person or licensed asbestos assessor.

For homeowners, the clearance is your peace of mind. It helps confirm the asbestos removal area has been checked before the roofer, builder or family re-enters the area.

Step 10: Re-roofing can begin

Once the asbestos removal area is cleared, the roofer can start installing the new roof.

This is why planning matters. The best jobs are coordinated between:

• Homeowner
• Asbestos removalist
• Roofer
• Scaffold company
• Waste contractor
• Clearance assessor, if required

A bad plan leaves your house exposed to weather. A good plan gets asbestos off safely and the new roof on with minimal fuss.

What homeowners should not do

Please do not:

• Water-blast asbestos roofing
• Drill it
• Sand it
• Cut it with a grinder
• Break sheets into smaller pieces
• Put asbestos in your normal rubbish
• Let a handyman “just whip it off”
• Let a roofer remove it unless they are licensed for asbestos removal
• Assume because it is outside it is harmless
• Let workers walk through your house in contaminated clothing

The cheapest quote can become the most expensive mess if asbestos is handled badly.

Common homeowner question: can I remove asbestos roofing myself?

In New Zealand, unlicensed people can remove up to 10m² of non-friable asbestos, but WorkSafe is clear that more than 10m² must be removed by a licensed asbestos removalist, and the work cannot be split into smaller sections just to avoid licensing requirements.

For a roof, 10m² is not much. Most house, garage and shed roofs are well over that.

Even where DIY might technically be allowed, homeowners should think hard about:

• Fall risk
• Fibre release
• Waste disposal
• PPE and respirators
• Neighbour exposure
• Clean-up requirements
• Insurance issues
• Future sale of the property

The plain answer: for asbestos roofing, use a licensed asbestos removalist.

Signs your asbestos roof needs attention

You should get advice if your roof is:

• Cracked
• Flaking
• Leaking
• Broken around fixings
• Covered in moss and deteriorating
• Damaged by storms
• Being disturbed for solar installation
• Being replaced during renovation
• Part of an old garage or sleepout demolition

Undisturbed asbestos can sometimes be managed in place, but once it is being removed, replaced, drilled or disturbed, the risk changes.

Why asbestos roof removal costs more than normal roofing

Homeowners often ask why asbestos roof removal is not priced like normal roof removal.

The answer is because the job includes extra controls:

• Licensed supervision
• WorkSafe notification
• Removal planning
• PPE and respirators
• Exclusion zones
• Controlled removal methods
• Asbestos waste wrapping
• Special disposal
• Decontamination
• Clearance checks
• Documentation

You are not just paying someone to take old roofing off. You are paying them to remove a hazardous material without spreading it across your property.

Simple homeowner checklist before asbestos roof removal

Before you approve the job, check:

External links homeowners may find useful

For reliable information, start with these:

• WorkSafe New Zealand — asbestos licensing and licensed removalists
• WorkSafe New Zealand — non-friable asbestos removal safe work practices
• WorkSafe New Zealand — Management and Removal of Asbestos Approved Code of Practice
• New Zealand Legislation — Health and Safety at Work (Asbestos) Regulations 2016
• Auckland Council — waste and building-related guidance for Auckland homeowners

The main legal and practical guidance sits with WorkSafe and the Asbestos Regulations. WorkSafe’s Approved Code of Practice sets out expectations for managing and removing asbestos under New Zealand asbestos law.

Final word for homeowners

Asbestos roof removal is not a panic job, but it is also not a “she’ll be right” job.

The smart process is:

Test it. Plan it. Use a licensed removalist. Control the site. Remove it carefully. Dispose of it properly. Get it cleared. Then re-roof.

That is the clean way. The safe way. The way that does not leave asbestos crumbs in the garden, in the gutters, or in someone’s lungs 20 years down the track.

For Auckland homeowners needing asbestos roof removal, asbestos testing, or advice before a re-roof, contact a licensed asbestos removalist such as PropertyHelp Ltd to assess the roof and explain the safest next step.