For most DIY demolition tasks at home — knocking out a wall, ripping up old flooring, or pulling down a deck — the right personal protective equipment (PPE) is your first and most important line of defence. Getting it wrong can mean serious injury, or exposure to hazardous materials like asbestos or lead paint that carry long-term health risks. Here's what you need to know before you swing that sledgehammer.
Why PPE Matters for Home Demolition
Demolition is one of the most hazardous DIY activities a homeowner can undertake. Flying debris, sharp edges, dust, noise, and hidden hazardous materials all pose real risks. WorkSafe NZ sets out health and safety duties that apply even to DIY work — you have a duty to take reasonable care of yourself and others nearby.
Essential PPE for DIY Demolition
Below is a breakdown of the core PPE you should have before starting any demolition work at home.
Eye and Face Protection
- Safety glasses or goggles — protect against flying chips, dust, and splinters. Choose goggles with an AS/NZS 1337 rating for impact resistance.
- Full face shield — recommended when using power tools like angle grinders or reciprocating saws, or when breaking up concrete.
Head Protection
- Hard hat — essential if there's any risk of falling objects or working near overhead structures. Look for a helmet rated to AS/NZS 1801.
Hearing Protection
- Earmuffs or earplugs — demolition is loud. Prolonged exposure to noise above 85 dB can cause permanent hearing damage. Use hearing protection rated to AS/NZS 1270 whenever using power tools or hammers.
Respiratory Protection
This is arguably the most critical area for home demolition:
- P2 respirator (half-face mask) — the minimum for general dust from plasterboard, timber, and masonry. A basic dust mask (paper flat-fold) is not sufficient.
- P3 respirator or full-face respirator with appropriate cartridges — required if you suspect asbestos-containing materials (ACMs) or lead paint. However, if you do find or suspect asbestos, stop work immediately — see the section below.
Hand Protection
- Heavy-duty work gloves — protect against cuts, abrasions, and splinters. Leather or cut-resistant synthetic gloves are ideal for demolition.
- Avoid loose-fitting gloves when using rotating power tools.
Foot Protection
- Steel-capped boots — protect against dropped materials and nails or screws underfoot. Look for boots rated to AS/NZS 2210.3.
Body Protection
- Long-sleeved shirt and long trousers — protect skin from cuts, abrasions, and dust.
- High-visibility vest — useful if others are working nearby or if you're near a roadway.
- Disposable coveralls — strongly recommended if working with dusty materials or if there's any risk of hazardous substances.
Hazardous Materials: A Critical Warning
Homes built before the mid-1980s in New Zealand may contain asbestos in materials such as fibro cement sheeting, floor tiles, pipe lagging, and textured ceilings. Homes built before the 1980s may also have lead-based paint.
- Do not disturb suspected asbestos-containing materials yourself. Asbestos removal (other than very minor, non-friable work) must be carried out by a licensed asbestos removalist. Check WorkSafe NZ for guidance on asbestos regulations.
- If you're unsure whether materials contain asbestos, arrange for a sample to be tested by an accredited laboratory before starting work.
- BRANZ has useful guidance on identifying hazardous building materials in older NZ homes.
PPE Quick-Reference Table
| Task | Minimum PPE Required |
|---|---|
| Removing plasterboard (GIB) | P2 respirator, safety glasses, gloves, hard hat |
| Breaking up concrete | Full face shield, P2 respirator, hearing protection, steel-capped boots |
| Demolishing a timber deck | Safety glasses, gloves, steel-capped boots, hard hat |
| Removing old tiles | Safety glasses or face shield, P2 respirator, gloves, knee pads |
| Any work near suspected asbestos | Stop work — call a licensed professional |
Before You Start: Check for Consent Requirements
Some demolition work requires a building consent. Under Schedule 1 of the Building Act 2004, certain minor work is exempt, but this depends on what you're removing and where. Always check with your local council before starting — rules vary by region. Visit MBIE Building Performance for general guidance on when consent is needed.
When to Call a Professional
Some demolition work is best left to a licensed demolition contractor. You should call a professional if:
- You suspect asbestos or lead paint is present — this is legally restricted work in many cases.
- You're removing load-bearing walls or structural elements — this affects the integrity of your home and may require an LBP (Licensed Building Practitioner). See LBP.
- The job involves electrical wiring or plumbing — disconnection and reconnection of these services is restricted work that must be carried out by a registered electrician (EWRB) or licensed plumber (PGDB).
- The scale of the project is large or the risks are unclear.
You can find qualified, local demolition contractors on tradedirectory.co.nz to get the job done safely and legally.
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