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GREENTERIOR 2026: Sustainable Wall Design and the Future of Interior Design
Sustainability is changing the way we plan, design, and use spaces. That’s why design, material innovation, and the transformation of the construction industry will come together at GREENTERIOR 2026 in Berlin. On November 18 and 19, 2026, STATION Berlin will become a hub for interior design, planning, manufacturers, and everyone concerned with the future of our interior spaces. Wall Rapture will be there—bringing a perspective that plays a crucial role in sustainable interior design: the wall as a durable, unique, and sustainably defining design surface.
What do interior spaces look like that not only inspire us today but will still be functional tomorrow? What materials do we need if we are to integrate design, quality, and the responsible use of resources? And how can surfaces be designed so that spaces develop their own distinct character without chasing after fleeting trends?
Questions like these are exactly what GREENTERIOR 2026 is all about.
Following its debut in 2025, the event launched by BauNetz id is entering its second year. It will take place as part of the Climate Festival for the Construction Transition on November 18 and 19, 2026, at STATION Berlin … The focus is on sustainable interior spaces—an aspect of the construction revolution whose importance is often underestimated.
After all, sustainable construction doesn’t end with the structural framework, insulation, facade, or building systems.
It continues on the inside.
And that is precisely where materials, furniture, finishes, and design concepts determine just how durable, adaptable, and high-quality a space truly is.
What is GREENTERIOR 2026 in Berlin?
GREENTERIOR is an interior design event held as part of the Climate Festival organized by BauNetz and Heinze. While the Climate Festival focuses broadly on the transformation of the construction industry, GREENTERIOR specifically focuses on interior spaces.
The theme for 2026 is:
Sustainable Interior Design: The Construction Revolution Is Also Taking Place Inside
It is explicitly not a matter of viewing design and sustainability as opposites. On the contrary: what is needed are solutions that integrate resource conservation, adaptability, and design excellence.
In the curated exhibition area, companies showcase furniture, materials, and services for sustainable interiors. The focus is on, among other things, modular, repairable, and reusable solutions, as well as products made from non-toxic resources.
The exhibition is complemented by talks, panel discussions, brief project presentations, and various discussion formats.
This means it is not a traditional trade show where products are merely displayed. Rather, GREENTERIOR sees itself as a platform for exploring what sustainable interior design can look like in practice.
It is precisely this approach that we find particularly exciting.
After all, when we talk about the future of interior design, we must also talk about the surfaces that play a key role in defining a space: its walls.
The construction revolution is also taking place indoors
The term “Bauwende” is often associated with major structural issues: energy efficiency, CO₂ emissions, renewable energy, circular construction, the renovation of existing buildings, and new construction methods.
All of these issues are crucial.
But a building is more than just its structure. People experience architecture primarily from the inside. We work indoors. We live there. We eat, sleep, learn, and communicate there. Hotels, restaurants, stores, and offices define a large part of their identity through the design of their interiors. The materials and finishes used there are therefore of great importance.
May-Britt Frank-Grosse, editor-in-chief of BauNetz id, aptly sums up the idea behind GREENTERIOR: Interior design is not a side issue in the construction revolution, but its very heart.
This viewpoint changes one’s perspective.
If sustainability in interior design is to be taken seriously, it is not enough to simply replace individual products with supposedly “greener” alternatives. Rather, we must ask ourselves some fundamental questions.
How long does a design remain relevant?
How flexibly can a space adapt to new requirements?
Which materials are best suited for this purpose?
Which surfaces age gracefully?
What solutions are available that won’t need to be completely replaced after just a few years?
And how does design influence whether people come to appreciate a space over the long term?
Sustainable interior design also means durability
One of the most important discussions in sustainable design concerns product lifespan.
In many areas of interior design, rapid cycles have become the norm over the past few decades. Trends emerge, spread, and then fade away. Spaces are redesigned even though the materials would still be perfectly functional from a technical standpoint.
This cycle can be particularly short, especially for commercial properties.
Restaurants are adopting new concepts. Hotels are being renovated. Stores are updating their look. Companies are transforming their work environments.
This makes one question increasingly important:
How can we design spaces that allow for change without turning design into a disposable product?
Durability does not depend solely on a product’s technical characteristics.
It starts right from the design phase.
A surface that has been specifically developed for a project holds a different significance than an interchangeable, off-the-shelf solution. A material that develops character and whose appearance is not limited to a short-term trend can become a long-term component of an interior design concept.
That is why we view high-quality wall design as more than just a decorative element.
It can be part of a long-term architectural identity.
Sustainable Trade Show Booth Design: More Than Just a One-Time Presentation
The importance of durability for sustainable design is particularly evident in trade show construction. Elaborately designed trade show booths are often planned, built, and then dismantled after just a few days of the event. Especially with custom-built booth designs, high design standards go hand in hand with enormous material and cost expenditures.
But a high-quality trade show booth doesn’t have to be a one-time thing.
We believe that sophisticated trade show design and reusability can go hand in hand. Wall and surface solutions can be designed from the outset not only to work for a single trade show booth, but also to be disassembled, transported, and reused in new booth designs.
This also changes the role of design: Instead of producing a completely new backdrop for every trade show, high-quality surfaces and design elements can become a long-term part of the brand architecture. The booth size, floor plan, and presentation may change—but the distinctive materials and surfaces remain the same.
We were able to demonstrate that this approach works in practice with our own booth. At the Independent Hotel Show Munich 2026 , Wall Rapture’s booth was awarded a gold rating as part of the Better Stands Program . In the evaluation, elements of our booth—including the structure, platform, furniture, lighting, flooring, and graphics—were classified as reused.
For us, this highlights an important aspect of sustainable design: reusability doesn’t have to come at the expense of design.
On the contrary. When materials and systems are designed from the outset to be reused multiple times, it is possible to create custom trade show booths with high design standards, whose design elements retain their value beyond a single event.
This transforms temporary trade show design into a reusable design system—and turns a short-term investment into a design solution that can be used at multiple events and reimagined time and again.
Wall Design: The Wall as an Underestimated Design Surface
Hardly any other surface has as strong an impact on an interior as the wall.
It provides a backdrop, creates contrasts, guides the eye, and influences the effect of light, furniture, and art. At the same time, it occupies an enormous visible area within a room.
Nevertheless, wall design is often planned relatively late in many projects.
The floor plan, lighting, furniture, and flooring are all set—and at some point, the question arises: What are we actually going to do with the walls?
We believe this order should be changed.
After all, a wall is not just leftover space.
It is a design element.
Materiality, texture, color effects, and craftsmanship can fundamentally transform the atmosphere of a room. A surface can appear calm or expressive, understated or dominant, technical or organic.
It becomes particularly interesting when wall surfaces are not viewed in isolation, but rather as part of a holistic material concept.
How does a surface react to daylight?
How does it change under indirect lighting?
What kind of connection is formed with the ground?
What materials are in the immediate vicinity?
What effect does viewing from a distance create—and what effect does viewing up close create?
For us, it is precisely this interplay that holds the key to the future of sophisticated wall design.
A selection of our finishes
From Decoration to Materiality
Wall design is often thought of in terms of color.
White, beige, gray, green, or perhaps a bold accent color.
But surfaces can do much more than that.
They have depth.
They reflect light.
They can appear mineral-like, metallic, smooth, rough, uniform, or deliberately irregular. Depending on the surface, the way they are perceived changes throughout the day and varies based on the viewer’s position.
As a result, wall design is shifting away from purely graphic or color-based decisions and toward an exploration of materiality.
This idea is particularly intriguing in the context of GREENTERIOR.
After all, sustainable interior design doesn’t have to mean that spaces have to be visually understated or minimalist in design.
On the contrary.
The challenge is to combine strong design with a more mindful use of materials and resources.
A room can be emotional.
He’s allowed to surprise us.
It’s okay for it to be unusual.
Sustainability and design quality are not mutually exclusive.
Circular Aesthetics: What Does Sustainable Interior Design Look Like?
One of the topics announced for GREENTERIOR 2026 focuses on circular aesthetics.
Does the circular economy need a new design language?
The question is noteworthy because it goes beyond technical characteristics.
For a long time, sustainable design was associated with a specific look: natural materials, muted colors, exposed wood, a recycled aesthetic, or deliberately rough surfaces.
But can you even tell if a space is sustainable just by looking at it?
Or can a sustainable interior be just as luxurious, minimalist, colorful, or extravagant as any other?
This opens up a vast field of opportunities for designers and planners.
After all, when sustainable materials are no longer limited to a specific aesthetic in design, their range of applications expands significantly.
The crucial question is then no longer:
“What does a sustainable space look like?”
Rather:
“How do we design the space we want using the right materials and systems?”
This change in perspective is crucial.
Color remains a key tool in interior design
Color also plays a role in GREENTERIOR.
Among other things, the program explores which color schemes are relevant in today’s interior design.
That’s not surprising.
Color is one of the most powerful tools in interior design.
It can make spaces appear larger or smaller. It can connect areas or separate them. It can provide a sense of direction and convey brand identities.
But color never exists independently of the material.
The same shade of color can look completely different on a smooth surface than on a heavily textured one. The level of gloss, light reflection, and depth further alter how the color is perceived.
That’s why we always consider color and finish together.
Custom wall finishes, in particular, open up possibilities that go far beyond a traditional coat of paint.
It’s not just the color itself that defines the space.
The way a surface interacts with light gives color a sense of depth.
See you in Berlin
On November 18 and 19, 2026 GREENTERIOR by BauNetz id is entering its second round at STATION Berlin, Luckenwalder Straße 4–6, 10963 Berlin.
The event is part of the 5th Climate Festival organized by BauNetz and Heinze.
Visitors can look forward to curated product and material presentations, Project Insights, lectures, panels, discussion sessions, and various networking events focused on sustainable interiors, among other things.
For us, GREENTERIOR is one thing above all else:
A place for new perspectives.
On materials.
On design.
On interiors.
And in response to the question of how we can design spaces that are both exceptionally creative and designed with the long term in mind.
We look forward to talking with architects, interior designers, designers, contractors, and anyone who wants to rethink wall design.
Or learn more about real surfaces instead of printed illusions
Meet Wall Rapture at GREENTERIOR 2026 in Berlin and discover the role that custom surfaces can play in the interiors of tomorrow.
Immerse yourself in the world of extraordinary surfaces
