Janssens 5x8 ft Helios Urban Victorian Glass Greenhouse Kit With 4mm Tempered Glass Glazing - CUSTOM-HELIOS-URBAN-BLACK
This high quality classic Janssens 5ft 3.9in x 7ft 8.9in x 7ft 1in Helios Urban Victorian Glass Greenhouse Kit with 4mm Tempered Glass Glazing provides the optimum environment for gardening year round while adding a delightful presence to any backyard setting.
The compact Janssens Helios Urban Victorian is a traditionally styled design with a modern twist, the sliding door is unusually placed on the length of the greenhouse making it an excellent choice when this orientation is required.
Made in Belgium to perform in any environment, it is made from ultra strong box section aluminum and is supplied with 4mm Toughened Safety Glass, Fir Green or Jet Black powder coating, and comes with roof crests and finials as standard.
Although we do not stock this model in the warehouse, the Helios Urban Victorian is a pre-packaged Janssens "Action Model" which can be supplied with an expedited lead time compared with custom-configured models. It can be ordered at any time, please see the estimated arrival time below. And of course like all the Janssens greenhouses this model can also be heavily customized - give us a call at 888-648-5333 to discuss customization and costs.
FEATURES
- Compact Hobby greenhouse: 41.3 sq ft
- Strong heavy duty "square" hollow tube framing with thick gauge
- 4mm tempered glass glazing for safety and good insulation value. Glass is secured in place with heavy rubber sealing
- 5ft 11in full height side walls provide excellent headroom along the interior sides, with an 7ft 1in overall height at peak
- Decorative roof ridge adds a touch of English sophistication and to deter birds perching on the roof
- 1 sliding door, can be installed on long side only. Slides on the outside of the greenhouse. Can be installed to slide in either direction.
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Optional low threshold kit can be ordered for the sliding door.
- Large gutters with downspouts
- 4 inch high foundation base can anchor to bare level ground, a wood platform, or a concrete slab
- Made in Belgium
- Financing Available
SPECIFICATIONS
- Assembled Size: 5ft 3.9in x 7ft 8.9in x 7ft 1in
- Peak Height: 7ft 1in
- Side Wall Height: 5ft 11in
- Footage: 41.3 sq ft
- Frame: Aluminum
- Color: Jet Black or Fir Green
- Glazing: 4mm Tempered (Toughened) Safety Glass
What Our Experts Think
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Compact Urban Victorian Design: Perfectly sized for small gardens, patios, and urban spaces without compromising greenhouse performance.
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Efficient 5x8 ft Footprint: Ideal for hobby growers focusing on herbs, seedlings, and compact plant collections.
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4mm Tempered Glass Glazing: Provides excellent light transmission, durability, and a clean premium finish for healthy plant growth.
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Year-Round Growing Capability: Helps maintain a stable microclimate, extending growing seasons and protecting delicate plants.
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Strong Aluminium Frame: Built for outdoor stability and long-term resistance to weather exposure with minimal maintenance.
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Stylish Black Finish: Adds a modern, high-end aesthetic that blends well with contemporary garden designs.
Q&A
Q: What are the dimensions of the Janssens Helios Urban Greenhouse?
A: This compact greenhouse measures approximately 5 ft x 8 ft with a peak height of around 8.5 ft, making it ideal for patios, urban gardens, and smaller outdoor spaces.
Q: What glazing material is included?
A: The greenhouse features premium 4mm tempered safety glass, providing exceptional clarity, durability, and maximum light transmission for healthy plant growth.
Q: Why choose tempered glass over polycarbonate?
A: Tempered glass offers a more elegant appearance, superior visibility, excellent light penetration, and enhanced scratch resistance while maintaining long-term durability.
Q: Is this greenhouse suitable for urban gardens?
A: Yes. The Helios Urban series is specifically designed for homeowners with limited space who want a high-quality greenhouse without sacrificing growing capacity.
Q: What is the frame made from?
A: The greenhouse features a heavy-duty powder-coated black aluminum frame that is rust-resistant, low-maintenance, and engineered for long-lasting outdoor performance.
Q: Does the greenhouse include ventilation?
A: Yes. Integrated roof vents help improve airflow, regulate temperature, and reduce excess humidity for a healthier growing environment.
Q: What can I grow inside this greenhouse?
A: It is ideal for starting seedlings, growing herbs, vegetables, flowers, succulents, and protecting delicate plants throughout the growing season.
Q: Is the greenhouse suitable for year-round use?
A: Yes. The durable frame and tempered glass construction provide reliable protection from wind, rain, and seasonal weather, helping extend the growing season.
Q: Is assembly difficult?
A: The greenhouse is supplied as a DIY kit with detailed instructions and pre-engineered components for easier installation. A level foundation is recommended for optimal stability.
Q: Who is this greenhouse best suited for?
A: The Helios Urban 5x8 is perfect for hobby gardeners, urban homeowners, patio growers, and anyone seeking a compact, stylish greenhouse with premium European craftsmanship.
Maintenance Tips
- Clean tempered glass panels regularly with a soft cloth and non-abrasive glass cleaner to maintain clarity and light transmission.
- Inspect glazing seals, clips, and gaskets periodically to ensure all panels remain secure and weather-tight.
- Remove dirt, algae, and organic buildup from the frame and base to prevent corrosion and staining.
- Check doors, vents, and hinges seasonally and lubricate moving parts for smooth operation.
- Ensure proper drainage around the base to avoid water pooling and structural stress.
- Tighten bolts and structural fittings regularly, especially after strong winds or seasonal changes.
- Keep ventilation systems clean and fully functional to maintain stable temperature and humidity levels.
- Inspect the aluminum frame for scratches or corrosion and treat exposed areas promptly.
Damage 
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