The rule nobody mentions until the lorry won't lift
Weight limits
Skips fill by weight before they fill by volume when soil or rubble is involved — a cubic yard of muck weighs ~1.2–1.5 tonnes.
Limits by skip size
| Skip | Practical weight limit | Soil/rubble allowed? | Typical job |
|---|---|---|---|
| Mini (2–3 yd³) | ~2–3 tonnes | Yes — the right skip for pure rubble | Bathroom strip-out, small garden dig |
| Midi (4–5 yd³) | ~4 tonnes | Yes | Kitchen refit with some tiles/plaster |
| Builder’s (6–8 yd³) | ~6–8 tonnes | Usually the largest allowed for soil/rubble | Renovation with mixed heavy waste |
| Large (10–12 yd³) | Lorry limit ~8 t — but light waste only | No — most firms refuse muck in 10 yd+ | House clearance, bulky light waste |
| RoRo (14–40 yd³) | Weighed at the tip, priced per tonne | By arrangement | Commercial and site waste |
Typical industry limits, reviewed July 2026 — individual firms set their own; heavy-waste rules are the first thing to confirm when you book.
The maths that catches people out
A standard skip lorry can lift roughly 8 tonnes. Soil, brick and concrete run 1.2–1.5 tonnes per cubic yard. So an 8-yard skip full of rubble weighs 10–12 tonnes — already past the limit — and a 12-yard skip of muck is out of the question entirely. This is why firms restrict heavy inert waste to smaller skips, why "level load only" is printed on the side, and why the cheapest way to move a lot of muck isn't a skip at all: it's agrab lorry, priced for tonnage.
Booking heavy waste properly
- Say "soil and rubble" when you get quotes — firms will size and price it correctly (typical prices).
- Fill heavy skips level, never above the rim — drivers refuse heaped loads.
- Mixing a little rubble into general waste is fine; the limit bites on mostly-heavy loads.
- Plasterboard doesn't count as inert — it must be separated by law. See what can go in a skip.
Common questions
How much weight can an 8-yard skip hold?
Around 6–8 tonnes — roughly the legal lifting limit of a standard skip lorry. That’s why 8 yards is usually the largest skip allowed for soil, rubble or hardcore: 8 cubic yards of muck at ~1.2–1.5 tonnes per yard already hits the lorry’s limit.
Why can’t I put soil in a 12-yard skip?
Because full, it would weigh 14–18 tonnes — nearly double what the lorry can legally lift. Large skips are for volume, not weight: furniture, wood, packaging. For serious quantities of soil or hardcore, a grab lorry is built for exactly that job and is cheaper per tonne.
What happens if my skip is overweight?
The driver can refuse to lift it — legally they must. You’ll then pay for a wasted journey and have to unload the excess before a re-collection, or pay a surcharge where the firm can split the load. If in doubt about heavy waste, tell the firm what’s going in when you book.
How heavy is a cubic yard of soil or rubble?
Soil runs about 1.2–1.5 tonnes per cubic yard (more when wet); broken concrete and brick rubble are similar. As a rule of thumb, ten filled rubble sacks weigh roughly a quarter of a tonne.
Related: skip size guide ·grab vs skip for muck ·RoRo skips (weighed per tonne) ·find local firms