Three systems · seven sizes
What size skip do I need?
The most common wrong order is a skip that is too small for light, bulky material, or one that is too big for heavy material. This page tells you which of the seven sizes suits your project — with capacity, accepted waste types and price per size.
Capacity compared
Converted into wheelbarrow loads as a guide — based on a builder’s wheelbarrow of 90 litres. It is an approximation, not a measurement, but it helps with estimating far more than a bare figure in cubic metres.
| Container | System | Volume | ≈ Wheelbarrows | Price |
|---|---|---|---|---|
| 4 m³ skip (Welaki) | Skip | 4 m³ | 44 | from CHF 369 |
| 7 m³ skip (Welaki) | Skip | 7 m³ | 78 | from CHF 491 |
| 10 m³ skip (Welaki) | Skip | 10 m³ | 111 | from CHF 653 |
| 20 m³ roll-off container | Roll-off container | 20 m³ | 222 | from CHF 1329 |
| 36 m³ roll-off container | Roll-off container | 36 m³ | 400 | from CHF 1779 |
| 5 m³ flat skip | Flat skip | 5 m³ | 56 | from CHF 410 |
| 10 m³ flat skip | Flat skip | 10 m³ | 111 | from CHF 653 |
Prices from zone 1, including transport, disposal and VAT.
Which size for which job
4 m³ skip (Welaki)
SkipSmall alterations, single rooms, bathroom renovations and anywhere space in front of the house is tight. In narrow old-town lanes and on narrow driveways, it is often the only size that can be set down neatly.
Bear in mind · With heavy materials such as concrete or excavated soil, the 4 m³ is usually limited by weight rather than by volume — it is full before it looks full.
7 m³ skip (Welaki)
SkipThe size ordered most often, and the right one for most renovations: kitchen and bathroom together, a loft conversion, a larger garden makeover.
Bear in mind · If you are torn between 7 and 10 m³ and the material is bulky and light (wood, furniture, green waste), take the larger one — with these materials, the volume runs out before the weight does.
10 m³ skip (Welaki)
SkipExcavated soil, demolition concrete and heavy building-site materials. The largest skip that is still collected by the standard skip lorry.
Bear in mind · Needs noticeably more ground space and clear height for tipping than the 4 and 7 m³. Check for trees, balconies and overhead lines above the spot beforehand.
20 m³ roll-off container
Roll-off containerHouse clearances, decluttering and bulky waste in quantities where several Welaki runs would not pay. One lift, a lot of volume.
Bear in mind · The hook-lift container needs a straight, firm access route and room to manoeuvre. Where access is steep or narrow, the Welaki is the safe choice.
36 m³ roll-off container
Roll-off containerCommercial quantities, warehouse clearances and large clearances. The largest unit in the range.
Bear in mind · Only worthwhile for light, voluminous waste — with heavy materials, the permitted payload is reached long before the volume.
5 m³ flat skip
Flat skipHeavy, dense materials in small quantities: excavated soil, demolition concrete, inert materials. The low sides make loading by hand or with a mini excavator much easier than with a tall skip.
Bear in mind · Open and flat — for the same volume, it takes less bulky, light material than a Welaki. For furniture, wood or green waste, the Welaki is the better choice.
10 m³ flat skip
Flat skipExcavation and demolition on a building-site scale, when loading straight from the excavator. Same volume as the 10 m³ Welaki, but lower and therefore quicker to fill.
Bear in mind · Delivered as a hook-lift container: the access route must be straight and firm, with enough room to manoeuvre. Where access is narrow or steep, the Welaki is safer.
Which waste type in which size
Not every waste type is accepted in every size — heavy mineral waste, for example, only goes into skips and flat skips, because the roll-off container would exceed its payload.
| Waste type | 4 m³ | 7 m³ | 10 m³ | 20 m³ | 36 m³ | 5 m³ | 10 m³ |
|---|---|---|---|---|---|---|---|
| Mixed rubble | ● | ● | ● | — | — | ● | ● |
| Clean excavated soil | ● | ● | ● | — | — | ● | ● |
| Demolition concrete, class 1 | ● | ● | ● | — | — | ● | ● |
| Demolition concrete, class 2 | ● | ● | ● | — | — | ● | ● |
| Roof tiles and bricks | — | — | — | ● | — | ● | ● |
| Inert materials | ● | ● | ● | — | — | ● | ● |
| Mixed bulky waste | ● | ● | ● | ● | ● | — | — |
| Green waste | ● | ● | ● | ● | ● | ● | ● |
| Waste wood A1–A3 | ● | ● | ● | ● | ● | — | — |
| Waste wood A4 | ● | ● | ● | ● | ● | — | — |
| Combustible waste (incineration) | ● | ● | ● | ● | ● | — | — |
| Flat glass | ● | ● | ● | ● | — | ● | ● |
| Eternit (fibre cement) | ● | ● | ● | ● | — | — | — |
Questions about sizes
What skip sizes are there?
Muldex offers seven sizes in three systems: the skip (Welaki) in 4, 7 and 10 m³, the hook-lift container (roll-off container) in 20 and 36 m³, and the flat skip in 5 and 10 m³. The Welaki is lifted by a skip loader and needs little space; the roll-off container is winched onto the truck with a hook lift and holds considerably more. The flat skip is the low, open version for heavy mineral waste — its low sides make it easy to load by hand or with an excavator.
How much fits in a 7 m³ skip?
Seven cubic metres is roughly 78 wheelbarrow loads of 90 litres. For a typical kitchen or bathroom renovation this size is usually enough; with bulky, light material such as wood or furniture, however, the volume fills up faster than you would think.
What size skip do I need for building rubble?
Mixed rubble and building rubble are accepted in the 4, 7 and 10 m³ Welaki sizes and in the 5 and 10 m³ flat skips. The 7 m³ Welaki is the size ordered most often. What matters more than the size is keeping the material separate: pure demolition concrete costs considerably less to dispose of than mixed demolition waste.
What size skip for a house clearance?
For bulky waste from clearing a flat or a house, the 20 m³ roll-off container is usually the most economical choice — it holds about as much as three 7 m³ Welaki skips but needs only one trip. For very large clearances or commercial quantities, the 36 m³ is an option.
Can I fill the skip to the brim?
Up to the top edge, but not above it. Nothing may stick out over the edge, because otherwise the load cannot be transported securely and the collection has to be refused. With heavy materials such as concrete or excavated soil, the permitted payload is also often reached before the skip looks full.
What is the difference between a Welaki and a roll-off container?
The Welaki is a skip: low, open, set down to the side by a skip loader — ideal when you fill it by hand or with small machines and space is tight. The roll-off container is a hook-lift container: it is winched onto the vehicle, holds considerably more and needs a straight, firm access route. The flat skip also comes on a hook-lift truck, but it is low and open and designed for heavy mineral waste.
How quickly is the skip delivered?
We usually deliver within 24–48 hours of your order. When you order, you choose the delivery date and the half-day (morning or afternoon).
What types of waste can I put in a skip?
We offer skips for building rubble, excavated soil, mixed rubble, concrete, roof tiles and bricks, inert materials, bulky waste, green waste, waste wood, flat glass, Eternit and combustible waste for incineration. Each skip takes one type of waste only, kept separate.
Are the prices all-inclusive?
Yes. The price shown includes transport (delivery and collection), disposal and the statutory VAT of 8.1%. No hidden costs.
Which cantons does Muldex deliver to?
We serve the whole of German-speaking Switzerland and French-speaking Switzerland (Romandie) — Geneva, Vaud, Fribourg, Neuchâtel and Jura included. In Valais, we deliver to the Chablais and the Martigny area from our depot in Bex. Ticino, Graubünden and Uri are not yet served.
How do I pay for my skip?
You can choose: pay straight away with TWINT, or by invoice, payable within 15 days once the job is complete. With TWINT, you receive all the payment details (with your order number as the payment reference) by email and on the confirmation page.
How long can the skip stay?
The first 14 days are included in the price. Each additional day is charged at CHF 5 per day — shown transparently and only billed at collection.
Do I need a permit for the skip?
Not on private ground — a driveway, courtyard or building site. As soon as the skip stands on public ground, that is on the road, the pavement or a public parking space, you need a permit from the municipality or the city police. The person placing the order obtains the permit; on request, we provide the skip’s dimensions and weight.
What happens if I don’t separate the waste properly?
Each skip is filled with a single material — one type of waste per skip. If foreign material is found when the load arrives at the disposal plant, the load has to be reclassified, which causes extra costs. If in doubt, just ask us before you fill the skip.
On to prices
The complete price table by waste type, size and zone is on the Prices page. The order form shows the binding amount for your address once you enter your postcode.