Green roof or hinged lid? How to choose the right roof for your garbage bin box
In short: The hinged lid wins for everyday use, while the planted roof wins on appearance. If you often throw your waste in from above, choose the lid. If the box is in view from your patio or window, the planted roof has a lot going for it. The hard difference is measurable: With a planted roof, the box is exactly 5.5 cm higher across all models and sizes. And a planted roof remains ornamental greenery, not a green roof compliant with standards.
Planted roof or hinged lid: the short answer
Both roof options protect your bins equally well from rain, wind and curious animals. They differ in only one respect: how you use the box and what it looks like.
| Hinged lid | Green roof | |
|---|---|---|
| Top filling | Yes, open the lid | No, only through the front door |
| Visual effect | Functional, flat, unobtrusive | Planted, blends into the garden |
| Construction height (Dagobert) | 114 cm (120 l) / 126.5 cm (240 l) | 119.5 cm (120 l) / 132 cm (240 l) |
| Maintenance required | Virtually none | Watering, occasional replanting |
| Well suited for | Driveway, house wall, side entrance | Front garden, sightlines, courtyard |
If you cannot decide, one simple question helps: Do you usually throw your residual waste in as you walk past, or do you open the door anyway to pull out the bin? If you throw the bag in as you walk past, you will find a planted roof inconvenient in everyday use.
How the two roof options differ technically
The most important difference is rarely mentioned in a product description: A planted roof costs you height.
And it is surprisingly consistent. We compared the models' dimension tables: The difference is exactly 5.5 cm for every model and every set size.
| Model (240 l) | Height with lid | Height with planted roof | Difference |
|---|---|---|---|
| Dagobert | 126.5 cm | 132 cm | + 5.5 cm |
| Stahlfred | 120 cm | 125.5 cm | + 5.5 cm |
| Holzmichl | 118 cm | 123.5 cm | + 5.5 cm |
Dagobert in the 120-liter version measures 114 cm with a lid compared with 119.5 cm with a planted roof, so that is also 5.5 cm. You can therefore plan with this value regardless of which model you choose.
That may not sound like much, but it matters in three places:
- Under a window sill or porch roof. Measure before ordering. Here, 5.5 cm often make all the difference.
- Next to a low wall or hedge. If the box is meant to align with the edge, the planted roof visibly shifts the line.
- When planting it yourself. At a total height of 132 cm, you can no longer comfortably reach the planter tray of a 240-liter box while standing.
The second technical difference is the weight. A planted roof carries substrate, and substrate absorbs water. The German Green Building Association calculates 60 to 180 kg/m² for thin-layer extensive assemblies in a water-saturated state (60 to 180 kg/m² in a water-saturated state) (BuGG). That is precisely why a green roof is generally permanently mounted and cannot be opened: A water-saturated planting tray can no longer be meaningfully opened as a lid.
The hinged lid: when everyday life matters
The hinged lid is the pragmatic choice. You open it, throw the bag into the bin, and close it. The door remains closed.
This matters especially where the box is used every day: in larger households, apartment buildings and anywhere the bins are located in a thoroughfare. Anyone operating four bins for four waste categories opens the box several times a week.
There is also no maintenance involved - more precisely: none. A metal lid needs nothing but occasional rinsing over the years. With Dagobert, for example, it sits on Z225 hot-dip galvanized sheet metal with a 35 µm organic coating, meaning the same construction as the body. We have broken down the other material differences in the material comparison for garbage bin boxes.
One point many people overlook: The closed hinged lid covers the bins from above. Together with the closed front door, this is the most effective barrier against other people's waste and curious animals. If this aspect is particularly important to you, you can find the details in the guide to the lockable lid for garbage bin boxes.
You can find all models with this roof variant in the overview garbage bin box with hinged lid.
The green roof: when the box remains visible
A green roof solves a problem that a lid cannot: It turns the garbage bin box into something other than a garbage bin box.
If the box is in the front garden, next to the entrance or within view of the terrace, the greenery completely changes how it is perceived. Instead of a grey box, there is a low bed. That is why green roofs are almost always chosen where guests pass by.
Technically, the planter tray is the critical part. It must retain water but reliably drain excess water, otherwise the roots will rot. In the Dagobert boxes, this is handled by a drainage system for the planted roof: an 8 mm thick dimpled membrane that drains up to 4.5 l/m²/s, combined with a galvanized perforated sheet with 3 mm hole diameters to distribute the water. Without this layer, water collects in the tray.
When planting, choose shallow-rooted, drought-tolerant plants. Sedum, houseleek, and saxifrage need little substrate and survive hot periods when no one thinks about watering. The specific varieties that have proven effective are listed in the guide which plants are suitable for a planted roof.
The models that can be planted are grouped in the garbage bin box with planted roof category.
What a planted roof really does - and what it does not
Honesty is worthwhile here because there is a lot of nonsense circulating online.
You will read online that a planted roof improves the microclimate, retains rainwater, and provides a habitat for insects. These effects are well documented for green roofs on buildings. Depending on their structure, extensive green roofs retain around 50 to 60% of annual precipitation and store 25 to 40 l/m² (Stadt+Grün, 2025). The German Environment Agency puts the potential reduction in a building's cooling energy demand at up to 10% (German Environment Agency).
But these figures do not apply to your garbage bin box.
They refer to roof surfaces with a structure that a box roof does not have. The new Austrian ÖNORM B 1131, in force since April 15, 2026, specifies a minimum structure of 10 cm with at least 8 cm of substrate for extensive green roofs (GRÜNSTATTGRAU). The City of Vienna also specifies at least 8 cm of soil structure for eligibility for funding (City of Vienna, MA 22).
A planter on a garbage bin box is smaller than that, and depending on the set size, its area is only a few square meters. By comparison: In Germany, around 9 million m² of roof area were newly greened in 2024 (BuGG Market Report 2025). Compared with that scale, a box roof is a rounding error.
What this means in practice:
- Realistic: The green roof is ornamental greenery. It looks good, adds greenery to a place where there otherwise would be none, and provides food for a few insects. Roofs planted close to nature can indeed measurably increase biodiversity, as shown by a survey by ZHAW, in which the number of wild bee species rose from 41 to 69 after a redesign (ZHAW).
- Not realistic: Noticeable cooling of your house, significant rainwater retention, or a contribution to flood protection. Anyone who promises you that for a box roof is selling you a story.
So buy the green roof because it is beautiful. The ecological added benefit is a nice bonus, not an argument.
Five questions to make your decision
Go through this list. It will get you to the result faster than any comparison text:
- Do you throw garbage in from above? Yes, regularly → hinged lid. No, you open the door anyway → green roof is possible.
- Is the box in your line of sight? Front garden, entrance, view from the terrace → green roof. Driveway, rear of the house, side entrance → hinged lid.
- Is there anything in the way above the box? Canopy, windowsill, roof overhang → measure whether the additional 5.5 cm will fit.
- How often are you there? Second home or frequently away → hinged lid. Unwatered substrate is a problem after two weeks in midsummer.
- How high do the bins stand? With a 240-liter box with a green roof, at a total height of 132 cm you can no longer reach comfortably into the planter. Bear this in mind if you want to replant regularly.
If you are still unsure about the bin size, the comparison 120- or 240-liter garbage bin can help.
Which models offer which roof option
Not every model lets you choose. The current status at BIO Stefan:
| Model | Hinged lid | Green roof |
|---|---|---|
| Dagobert | Yes | Yes |
| Stahlfred | Yes | Yes |
| Holzmichl | Yes | Yes |
| Alubert | Fixed configuration, no roof option to choose |
With Dagobert, Stahlfred, and Holzmichl, you choose the roof option directly during configuration, along with the set size, bin size, and color. Alubert is delivered in a fixed configuration and does not offer this choice.
You can find an overview of all models and sizes in the garbage bin box overview.
Frequently asked questions
Which roof is better for the garbage bin box?
There is no better roof, only a more suitable one. The hinged lid is more convenient in everyday use because you can throw things in from above and it requires no maintenance at all. The planted roof is the better choice wherever the box is visible. Decide based on the location, not the catalog.
Can I retrofit a planted roof?
The roof variant is selected during configuration because the design and overall height differ. Therefore, plan this decision before ordering. If you are unsure, ask customer service in advance what is possible for your specific model.
How much higher is a box with a planted roof?
Exactly 5.5 cm, and this value is the same for all models and set sizes. A Dagobert for 240 liters measures 126.5 cm with the lid and 132 cm with the planted roof, a Stahlfred measures 120 cm versus 125.5 cm, and a Holzmichl 118 cm versus 123.5 cm.
Does rainwater drain properly from the planted roof?
Only with a functioning drainage system. On the Dagobert planted roof, this is provided by an 8 mm-thick dimpled membrane mat with a drainage capacity of up to 4.5 l/m²/s, plus a galvanized perforated sheet for water distribution. Without this layer, waterlogging occurs and the roots rot.
Which plants survive on a planted roof?
Shallow-rooted, drought-tolerant species such as sedum, houseleek and saxifrage. They need little substrate and forgive you if you forget to water them in summer. Perennials with high water requirements do not work at this build-up height.
Is a planted roof on the garbage bin box a real green roof?
No. A green roof in accordance with ÖNORM B 1131 requires a build-up of at least 10 cm with 8 cm of substrate. A planting tray on a garbage bin box is below this and should be understood as ornamental planting, not as structural green roofing with measurable climate or retention effects.
Does the planted roof need a special base?
Not because of the roof itself, but the additional weight of water-saturated substrate increases the requirement for a level, load-bearing surface. What works and what does not is explained in the guide to the right base for the garbage bin box.
