Can I Remove Old GIB Board Lining Myself Before a Renovation?

In most situations, a NZ homeowner can remove old GIB board lining themselves as part of a renovation — it's generally not restricted work under the Building Act. However, before you reach for the pry bar, there are some critical safety checks you must carry out, particularly around asbestos, electrical wiring, and whether your demolition affects structural or weathertight elements of the building.

Check for Asbestos First — This Is Non-Negotiable

If your home was built or renovated before 2000, there is a real possibility that materials in or behind the wall linings contain asbestos. While GIB board itself is unlikely to contain asbestos, textured coatings (like stipple or "popcorn" finishes), joint compounds, backing materials, and insulation behind the lining may. Disturbing asbestos-containing materials without proper precautions is a serious health risk and is regulated under the Health and Safety at Work (Asbestos) Regulations 2016.

Before starting any demolition:

• Do not assume materials are asbestos-free just because they look ordinary.
• Have suspect materials tested by an accredited laboratory before disturbing them.
• If asbestos is confirmed, removal must be handled according to WorkSafe NZ guidelines. Friable asbestos removal (and non-friable asbestos removal above the regulatory threshold) must be done by a licensed asbestos removalist. Check WorkSafe NZ guidance for the current thresholds and licensing requirements.

Identify What's Behind the Walls

GIB board linings often conceal electrical cables, plumbing pipes, and in some cases gas lines. Before cutting or pulling lining away:

• Turn off the power at the switchboard to any circuits running through the area you're working in.
• Use a stud finder with AC detection to locate wires before cutting.
• Be aware that any work on electrical wiring — including reconnecting, extending, or altering cables — is restricted electrical work and must be carried out by a registered electrician. Check the Electrical Workers Registration Board (EWRB) for what homeowners can and cannot do.
• Similarly, plumbing and drainlaying work is restricted and must be done by a licensed tradesperson registered with the Plumbers, Gasfitters and Drainlayers Board (PGDB).

Your job as a DIYer is to carefully expose these services — not to alter them.

Does Your Project Need a Building Consent?

Simply removing internal wall linings as part of a cosmetic renovation is generally exempt from building consent under Schedule 1 of the Building Act 2004. However, if your renovation involves:

• Removing or altering load-bearing walls or bracing elements
• Changes to the building envelope (weathertightness)
• Alterations to plumbing, drainage or gas systems

…then a building consent may be required. Always check with your local council before starting work. You can find general guidance at MBIE Building Performance.

How to Remove GIB Board Safely

Once you've confirmed there's no asbestos and you know where your services are, the physical removal is straightforward:

Tools you'll need

• Utility knife or oscillating multi-tool
• Flat pry bar and hammer
• Safety glasses and dust mask (P2 rated minimum)
• Heavy-duty rubbish bags or a skip bin

Step-by-step process

1. Score the paint and stopping along the edges and joins with a utility knife to avoid tearing adjacent surfaces.
2. Locate studs (typically at 400 mm or 600 mm centres in NZ framing to NZS 3604) and work between them.
3. Punch a hole with a hammer to create a starting point, then use the pry bar to lever sheets away from the framing.
4. Work carefully around any visible cables or pipes.
5. Remove nails or screws from the framing as you go to leave a clean surface for the new lining.

Dust and disposal

GIB board dust is a nuisance irritant — wear your P2 mask throughout. Broken GIB board can generally go to a general construction waste skip, but check with your local council or waste facility, as some have specific requirements. Do not mix potentially asbestos-containing material with general waste.

Healthy Homes and Rental Properties

If you're renovating a rental property, be aware that the Healthy Homes Standards set requirements around insulation, heating, ventilation and moisture control. Any renovation work should leave the property compliant — factor this into your plans.

When to Call a Professional

Call a licensed demolition contractor or builder if:

• Asbestos-containing materials are confirmed or strongly suspected
• You're unsure whether walls are load-bearing or part of the bracing system
• The lining is in a wet area (bathroom, laundry) where waterproofing membranes may be involved
• You discover unexpected damage such as rot, mould, or pest infestation behind the lining
• The scope of work is large or complex

A qualified local demolition contractor or builder can assess the risks quickly and save you from a costly mistake. You can find experienced tradespeople in your area on tradedirectory.co.nz.

Sources & Further Reading

• WorkSafe NZ – Asbestos information
• MBIE Building Performance – Building consent information
• GIB – Wall and ceiling lining systems
• EWRB – Electrical restricted work
• PGDB – Plumbing and gasfitting licensing
• BRANZ – Build magazine and technical guidance