The versatile space champion for the ultimate garden experience
Ready to both grow and live in a single greenhouse? The Helios is Janssens’ most spacious base model: a greenhouse with tall 201 cm side walls and a gentle roof pitch that makes every square metre fully usable. Equally suited to the passionate kitchen gardener and those who see the greenhouse as a second garden room.
This greenhouse is the volume model in the Janssens range. The low roof pitch and high side walls give the Helios its distinctive appearance, while the generous interior creates a versatile garden room, ideal as a growing space, a light-filled workspace or the perfect combination of both.
Every Helios is unique, because you shape it to your vision. You choose the length that suits your garden and the colour that complements your home or planting. For the configuration type, you can opt for a freestanding unit, a lean-to against the wall or a wall-mounted installation on top of a dwarf wall. You also choose the glazing in toughened safety glass, and decide on the position of side windows/top-hung windows, roof windows and ventilation elements. Finally, there are the decorative finishing touches: from elegant ridge ornaments to decorative panels.
The Helios adapts effortlessly to your garden, style and sense of class.
Explore the different options below and create a greenhouse that is perfectly yours.
The Helios is a detached greenhouse that can be placed completely independently of your home. Ideal as additional living space, a studio or a relaxation area in the heart of the garden.
The Helios can be placed directly against your home, forming a seamless extension of your living space. Perfect for adding extra light, space and comfort to your house.
A T-shaped greenhouse combines multiple roof directions to create a unique, spacious extension. Ideal for integrating different living zones with maximum natural light and extra square footage.
The Helios can be mounted on a dwarf wall of 20, 40 or 60 cm, giving the greenhouse an even more exclusive appearance, ideal when used as a garden room.
Drawing on 80 years of expertise and experience in professional greenhouse construction, Janssens has developed its own proprietary profile system, the foundation of our current range of garden greenhouses.
Five core principles guide everything we do: craftsmanship, the best price-to-quality ratio, durable and low-maintenance materials, modular construction and a product that is hassle-free for life.
Key features:
Fully adaptable to your space: choose the ideal length, width, and height yourself. With flexible glass layouts and various placement options, this greenhouse fits your home perfectly.
Dimensions
Optional
Personalise your greenhouse down to the finest detail. From frame colours to glass type and decorative finishes, configure a specification that perfectly matches your style and preferences.
Frame
Seals
Glazing type
Decorative elements
Add-ons
Accessories
Janssens offers a wide range of optional accessories: from seedtrays, tablers and shelves to hanging systems.
The high side walls and gentle roof pitch not only create a contemporary appearance, they give plants and people plenty of room. You harvest standing fully upright right into the corners, slide mature tomato plants in and out with ease, and make full use of every metre. Inside, the Helios feels like a generous garden room where plants and people have all the space they could want.
A Helios is built to outlast generations, even at wide span. The self-supporting structure holds its shape right to the furthest corners, the aluminium never rusts and never needs painting, and the well-engineered gutter and drainage system channels rainwater away efficiently at all times. A greenhouse that simply keeps standing, year after year, harvest after harvest.
A Janssens can be recognized by three things: the choice of materials that last for decades, a range that adapts to every garden instead of the other way around, and a level of finish that convinces even the most demanding gardener. These three pillars form the foundation of every model.
Materials and design focused on weather resistance, ease of maintenance, and timeless design. You buy a Janssens once.
From 'action models' (ready-made standard models) to fully customizable greenhouses, with a choice of dimensions, doors, windows, glazing, and finishes.
Maintenance-free aluminium, safety glass, durable rubber seals, and stainless steel fasteners. Every component is chosen for the long term.
Custom Models, the range of fully customizable greenhouses by Janssens. Each model has its own character: from the spacious Helios to the massive Gigant and the minimalist Modern.
Choose the model that suits your garden, style, and ambition.
Every greenhouse we make helps not only your garden grow, but the world too.
For every greenhouse sold, we plant a tree together with Go Forest in Peru or the Congo.
This way, we contribute to global reforestation and a better future for our planet.
Janssens sells exclusively through authorised dealers. Our international network provides personalised advice, local expertise and professional installation guidance, across Europe, Scandinavia and the United States.
