Loading excavated material into a skip bin is something most homeowners can tackle themselves, but it pays to plan carefully. Soil, clay, and rubble are surprisingly heavy, and skips have strict weight limits — getting it wrong can result in injury, extra charges, or a skip that can't be safely collected. Follow the guidance below to get the job done safely and efficiently.
Understand Your Skip Bin's Weight and Volume Limits
This is the most important step before you load a single shovelful. Every skip bin has a maximum weight limit, typically printed on the bin or stated in your hire agreement. Excavated material — especially wet clay or compacted soil — is extremely dense. As a rough guide:
- Loose topsoil: around 1,000–1,200 kg per cubic metre
- Compacted clay: can exceed 1,600 kg per cubic metre
- Concrete or rubble: 1,500–2,000+ kg per cubic metre
A standard 4 m³ skip filled with clay can easily exceed 5,000 kg — far beyond most skip weight limits of 1,000–2,000 kg. Always confirm the weight limit with your skip hire company before loading, and never fill a soil or rubble skip to the brim. A half-full skip of heavy material may already be at its limit.
Gather the Right Tools and PPE
Working safely starts with having the right gear:
- Steel-capped boots — essential when handling heavy material and tools
- Gloves — protect against cuts from rubble and sharp edges
- Safety glasses — when breaking up concrete or rock
- Hi-vis vest — if working near a road or driveway where vehicles pass
- Dust mask (P2 rated) — particularly important if disturbing older fill that may contain contaminants
- Wheelbarrow — a builder's barrow with a pneumatic tyre handles rough ground far better than a standard garden barrow
- Long-handled shovel and mattock — reduce bending and strain
- Plank or ramp — if the skip has a hinged door, use it; otherwise a solid timber plank lets you wheel the barrow up safely
Check WorkSafe NZ for guidance on manual handling and personal protective equipment requirements.
Position the Skip Correctly
Before the skip arrives, think about placement:
- Position it as close to the excavation as possible to minimise the distance you're wheeling heavy loads
- Ensure the ground is firm and level — a skip on soft ground can sink or tip
- If placing on a public road or footpath, you will likely need a permit from your local council; check with them before booking
- Leave enough clearance for the truck to safely collect the skip — typically at least 5–6 metres of overhead clearance and clear access front and back
Safe Loading Technique
Manual Handling
Excavated material is one of the leading causes of manual handling injuries in DIY projects. Follow these principles:
- Keep loads manageable — fill the barrow to no more than two-thirds capacity with heavy material
- Bend your knees, not your back when shovelling
- Take regular breaks — fatigue leads to poor technique and injury
- Work with a buddy where possible, especially when shifting large rocks or concrete chunks
- Never throw heavy rocks or chunks of concrete into the skip from a distance — place them carefully to avoid damaging the bin or causing injury
Loading Order
- Load heavy, dense material first (clay, rock, concrete) at the bottom
- Top up with lighter soil or topsoil if you have mixed material
- Keep the load level and evenly distributed — don't pile material higher on one side
- Never load above the top rim of the skip — this is both a safety hazard and illegal on public roads
Using a Ramp
If the skip has a hinged rear door, open it and use a solid timber plank (at least 50 mm thick hardwood or LVL) as a ramp. Ensure the plank is wide enough for your barrow wheels and secured so it can't slip. Wheel the barrow up, tip, and reverse back down — don't try to turn around on the ramp.
What Can (and Can't) Go in a Skip
Not all excavated material is the same. Check with your skip hire company about what they accept:
| Material | Generally Accepted? | Notes |
|---|---|---|
| Clean topsoil | Yes | Weight limits apply |
| Clay | Yes | Very heavy — watch weight limits |
| Concrete/rubble | Sometimes | Often requires a dedicated rubble skip |
| Asphalt | Sometimes | Check — may need separate disposal |
| Contaminated soil | No | Requires specialist disposal |
| Tree roots/vegetation | Sometimes | Often a separate green waste skip |
If you suspect the soil may be contaminated (e.g., near old fuel tanks, industrial sites, or pre-1980s properties with possible lead paint or asbestos-containing fill), stop work and seek advice from an environmental consultant before disturbing or disposing of it. WorkSafe NZ has guidance on hazardous substances.
Protecting Your Property
- Place timber boards or rubber matting under the skip to protect driveways and paving
- Lay plywood sheets along your barrow route to protect lawns and paths
- Keep the area around the skip clear of trip hazards
When to Call a Professional
While loading a skip yourself is generally safe DIY work, there are situations where you should bring in a qualified tradesperson or specialist:
- Large-scale excavation — if you're excavating near foundations, retaining walls, or boundary lines, consult a Licensed Building Practitioner (LBP) or structural engineer before proceeding
- Suspected contamination — always get professional assessment before disturbing or disposing of potentially contaminated soil
- Excavation near services — call Before U Dig (0800 248 344) to locate underground pipes and cables before any digging
- Unstable ground or trenches — trenches of significant depth can require specific safety measures under NZ law (check current WorkSafe NZ guidance for the applicable thresholds); consult WorkSafe NZ
- Building consent requirements — some excavation work (e.g., near the foundation of a house) may require a building consent under the NZ Building Code; check with your local council or visit MBIE Building Performance
If the job is bigger than you bargained for, you can find qualified local excavation and earthworks contractors on tradedirectory.co.nz.
Licensed Building Practitioner (LBP)
