4mm — Best Value
A great all-round choice for most UK gardens. Excellent light transmission and the most economical option.
Choose 4mm if: you want the best balance of performance and price.
4mm or 6mm Polycarbonate?
Both options use the same heavy-duty Polyeco Classic steel frame. The main difference is insulation and price.
6mm — Better Insulation
The thicker polycarbonate provides improved insulation and heat retention, making it a good choice for customers wanting a little more protection from colder temperatures.
Choose 6mm if: insulation and extending the growing season are more important to you.
Still unsure? For most customers, 4mm is perfectly suitable. Choose 6mm if you specifically want the additional insulation.
Why Choose the Dome?
The Polyeco Dome is designed for gardeners who want a spacious, durable polycarbonate greenhouse without paying for complexity.
Practical 3m-Wide Growing Space
A spacious 3m-wide interior gives you plenty of room for plants, beds and shelving without making the greenhouse feel cramped.
Panels That Stay Put
Durable polycarbonate sheets are securely fixed to the frame, creating a strong and practical greenhouse cover.
No Base Required
The Dome can normally be installed directly onto suitable soil or grass using its ground anchoring system.
Simple, But Strong Design
A streamlined structure with fewer components and no separate base frame keeps the Dome practical, uncomplicated and at a lower price point within the Polyeco range.
Simple by Design. Practical in Use.
The Polyeco Dome is designed for growers who want a spacious, dependable greenhouse without complexity.
Its 3m-wide interior gives you plenty of usable growing space, while the streamlined galvanised steel structure keeps installation and ownership straightforward.
With the ground anchoring system included, the Dome can usually be installed directly onto suitable soil or grass, making it a practical choice for gardens, allotments and everyday growing.
Dimensions & Specifications
| Width | 3 metres |
|---|---|
| Available lengths | 2m, 4m, 6m, 8m, 10m and 12m and longer* |
| Ridge height | Approximately 2.1 metres |
| Frame | Galvanised steel |
| Cover | 4mm or 6mm twin-wall polycarbonate |
| Arch spacing | 1m |
| Door | Stable-style door |
| Rear ventilation | Included |
| Ground anchoring system | Included |
| Concrete base required | No, when installed on suitable soil or grass |
Need a longer greenhouse? Please contact us — longer Classic models are available.
What’s Included
- Galvanised steel greenhouse frame
- 4mm or 6mm twin-wall polycarbonate cover, depending on selected option
- Stable-style door
- Rear ventilation window
- Ground anchoring system
- All required greenhouse fixings and fittings
- Assembly instructions
Optional extras such as automatic roof vents, shelving, raised beds and additional doors are available separately.
Complete Your Dome
A few useful extras can make your greenhouse even more practical. Add them now or upgrade your Dome later.
Automated roof vent The Classic
£129.00
Helps regulate temperature and ventilation automatically.
View accessory
Hanging Shelf Polyeco 0,75m x 0,42m
£45.00
Add useful growing and storage space without taking up valuable floor area.
View accessory
Raised Galvanised Steel Flowerbed, 0,75m x 1,5m x 0,3m Silver (not painted)
£89.00
Create a tidy, practical growing area inside your greenhouse.
View accessory
The Classic Rear Doors
£55.00
Add easier access from both ends of longer greenhouses.
View accessory
Accessories are optional extras and are not included with the standard greenhouse unless stated otherwise. Please check compatibility with your chosen Classic size before ordering.