How much does rubble weigh? Weights, volumes and how many bags you need

Updated 6 November 2026 · By the Rubble Removal team

Short answer: As a rough UK guide, loose broken brick and concrete rubble weighs about 1.3 to 1.6 tonnes per cubic metre, dry soil about 1.2 to 1.4 tonnes and wet clay up to around 2 tonnes. A one-tonne bulk bag holds roughly 0.6 to 0.7 cubic metres of rubble before reaching its weight limit, and a standard builders' rubble bag holds around 20 to 25 kg.

How much does rubble weigh? Weights, volumes and how many bags you need

Why weight matters more than volume

With most household waste, volume is what fills a skip or a van. Rubble is different: it reaches the weight limit of a skip, a bag or a vehicle long before it is full. Disposal sites also charge heavy waste by the tonne, so weight drives the cost of getting rid of it.

This is why skip companies restrict rubble to small skips, why bulk bags should not be filled to the brim with concrete, and why a pile that looks modest can need more than one vehicle trip.

Typical weights by material

Material	Approximate weight per cubic metre
Solid concrete, before breaking	About 2.4 tonnes
Broken concrete rubble, loose	About 1.4 to 1.6 tonnes
Broken brick rubble, loose	About 1.2 to 1.5 tonnes
Hardcore and crushed sub-base	About 1.5 to 1.8 tonnes
Dry topsoil, loose	About 1.2 to 1.4 tonnes
Wet clay or subsoil	About 1.6 to 2.0 tonnes
Mixed building waste	About 0.4 to 0.8 tonnes

These are approximate figures. Moisture, how tightly the pile is packed and the size of the pieces all change the real weight.

How many bags and skips

Container	Typical capacity for rubble
Builders' rubble bag	About 20 to 25 kg, roughly 40 to 50 bags per tonne
One-tonne bulk bag	About 0.6 to 0.7 m³ of rubble or soil, filled level at most
Mini skip, 2 to 3 cubic yards	About 2 to 3 tonnes of rubble
Midi skip, 4 to 5 cubic yards	About 4 to 5 tonnes of rubble
Builders' skip, 6 to 8 cubic yards	Often the largest allowed for heavy waste, filled level
Grab lorry	Usually around 8 to 16 tonnes depending on the lorry

Builders' rubble bags are often sold as able to carry more, but around 20 to 25 kg is what one person can lift and carry safely. Skip limits vary between hire companies, so always check.

How to estimate your pile

Measure the pile's length, width and average height in metres and multiply them together. Piles are roughly mound-shaped rather than box-shaped, so halve the answer for a reasonable estimate of the volume. Multiply by the weight per cubic metre for the material.

For a hole you are about to dig, measure the hole instead and add 20 to 30 percent, because soil and broken material bulk up once they are dug and loosened.

Pile 2 m long, 1.5 m wide, 0.8 m high: 2 x 1.5 x 0.8 = 2.4, halved to about 1.2 m³
Broken brick at about 1.4 tonnes per m³ gives roughly 1.7 tonnes
That is about two one-tonne bulk bags, or a small van load

Common items and what they weigh

A standard UK house brick weighs about 2.5 to 3.5 kg
A 600 x 600 mm concrete paving slab is typically around 25 to 35 kg
A cubic metre of bricks is roughly 500 to 600 bricks
A typical chimney breast removal can produce one to two tonnes of rubble
An old 20 m² patio with sub-base can be three to six tonnes

Vehicle and trailer limits

Weight also limits what you can move yourself. A typical medium panel van has a payload of around one tonne, and many small vans and car-derived vans carry far less, so a single cubic metre of broken concrete can overload them. A domestic car trailer is limited by its own rating and by the towing limit of the car. Overloading is dangerous, affects braking and steering, and is an offence.

Household waste recycling centres often restrict vans and trailers, and many limit the number of rubble bags you can bring per visit. If you are thinking of doing several trips yourself, check the site rules first, and weigh up fuel, time and the risk of being turned away against the cost of a single collection.

Getting a quote by weight

You do not need to work out the exact weight to get a price. A few photos with something for scale, plus the type of material, is usually enough for an experienced collector to estimate the load. The estimate above is useful for checking that a quote, a skip size or a number of bags makes sense before you commit. If two quotes assume very different amounts of waste, ask each company how much they think is there, as one of them has probably misjudged the pile.