Hired scaffolding can make a big home project much safer and more manageable — but only if the structure itself is safe. Before you or anyone else steps onto it, a thorough visual inspection is essential. In New Zealand, scaffolding safety is governed by WorkSafe NZ guidelines, and both the hire company and the person in control of the worksite share responsibility for ensuring it's erected and maintained correctly.
Confirm the Scaffolding Was Erected by a Competent Person
The first thing to check isn't the scaffolding itself — it's who put it up. Under NZ health and safety law, scaffolding over 5 metres in height must be erected, altered, and dismantled by a certificated scaffolder (a licensed tradesperson holding a relevant certificate of competence). For scaffolding under 5 metres, the person erecting it must still be competent and follow safe work practices.
Ask your hire company:
- Was the scaffolding erected by a certificated scaffolder?
- Can they provide a handover certificate or inspection record?
- Is there a tag system in place (green = safe to use, red = do not use)?
A reputable scaffolding hire company will supply a handover certificate confirming the structure has been inspected and is safe for use. If they can't provide this, treat it as a red flag.
Check the Scaffold Tag
Most professional scaffolding in NZ uses a colour-coded tag system attached to the access point:
| Tag Colour | Meaning |
|---|---|
| Green | Safe to use — inspected and signed off |
| Red | Do not use — unsafe or incomplete |
| Yellow | Caution — restricted use, check with supervisor |
Never use scaffolding displaying a red tag or no tag at all. Contact the hire company immediately.
Carry Out a Visual Inspection Before Each Use
Even with a green tag, you should do a quick walk-around inspection every time before you use the scaffolding — especially after bad weather, which is common across New Zealand.
Standards and Stability
- Standards (vertical tubes) should be plumb (straight up and down) and sitting on base plates on firm, level ground. Soft or uneven ground should have sole boards underneath.
- Check that adjustable base jacks are not extended more than the manufacturer's recommended amount (often around 300 mm — check the hire company's documentation).
- Give the structure a gentle push — it should feel solid, not wobble or shift.
Ledgers, Transoms and Bracing
- Ledgers (horizontal tubes) and transoms (cross tubes) should be securely connected with properly tightened couplers. Look for any that appear loose, bent, or missing.
- Diagonal bracing should be present and properly fitted — this is what stops the scaffold from racking sideways.
Platforms and Boards
- Scaffold boards should be in good condition — no splits, rot, or excessive warping. They should be properly supported, overlap correctly at the ends (typically at least 150 mm), and not be able to tip or slide.
- Boards should cover the full working width with no large gaps that a foot or tool could fall through.
Guardrails and Toeboards
- Any platform more than 2 metres above the ground must have guardrails (top rail and mid-rail) and toeboards to prevent falls and falling objects. This is a requirement under NZ health and safety regulations.
- Check that guardrails are secure and at the correct height (top rail typically around 900–1100 mm above the platform).
Access and Ladders
- The access ladder should be properly secured at the top and bottom, extend above the platform level, and be positioned at a safe angle.
- Never climb the outside of the scaffold frame as a shortcut.
Ties and Anchors
- If the scaffold is tied to the building (common for taller structures), check that ties are still in place and haven't been removed or damaged.
After Bad Weather
New Zealand weather can be unpredictable. After heavy rain, strong winds, or any significant weather event, the scaffolding should be re-inspected by a competent person before use. Ground conditions can change, and wind can shift or loosen components. Don't assume it's still safe just because it was fine the day before.
Load Limits
Every scaffold is designed for a specific load rating — the maximum weight it can safely carry, including people, tools, and materials. Ask your hire company for the load rating and never exceed it. Overloading is a common cause of scaffolding collapse.
When to Call a Professional
If anything looks wrong — loose couplers, missing guardrails, sinking standards, damaged boards, or a red or missing tag — stop work immediately and contact your scaffolding hire company. Do not attempt to fix or adjust the scaffolding yourself unless you are a certificated scaffolder. Altering scaffolding without the right knowledge and certification is both dangerous and potentially illegal.
For scaffolding over 5 metres, all erection, alteration, and dismantling must be carried out by a certificated scaffolder — this is restricted work under NZ law. You can find qualified, local scaffolders on tradedirectory.co.nz to ensure the job is done safely and compliantly.
For general guidance on working safely at height and your obligations as a homeowner or person conducting a business or undertaking (PCBU), visit WorkSafe NZ. For building consent questions related to your project, check with your local council or visit MBIE Building Performance.
