Polycarbonate greenhouse
A polycarbonate greenhouse offers strength, insulation, and low maintenance. Lightweight yet durable, it’s ideal for UK weather—retaining heat in winter and protecting from harsh sun in summer. Shatter-resistant and long-lasting, it’s a smart, safe way to grow year-round.
Glass vs Polycarbonate – A Side-by-Side Comparison
| Feature | Glass Greenhouse | Polycarbonate Greenhouse |
|---|---|---|
| Light Transmission | Very high (90%+), clear visibility | Moderate (70–85%), diffused light reduces scorching |
| Insulation | Low – heat escapes quickly | High – twin-wall traps heat, ideal for cooler climates |
| Durability | Breakable under impact | Impact-resistant and flexible |
| Weight | Heavy – needs stronger frame | Lightweight – easier to install and move |
| UV Protection | High, but can fade over time | Excellent – blocks harmful rays while letting in growth-friendly light |
| Maintenance | Requires cleaning and glass replacement if cracked | Low-maintenance, long lifespan |
Polycarbonate Greenhouse – Sunlight Protection and Heat Retention
One of the greatest benefits of a greenhouse with polycarbonate panels is its natural sunlight diffusion. While glass lets in sharp direct rays, polycarbonate softens the light, distributing it evenly throughout the interior. This helps prevent leaf scorching, especially on hot summer days, and allows for healthier, more even plant growth.
Polycarbonate greenhouse with panels are also treated with UV-resistant coatings that block damaging rays while still supporting photosynthesis. This keeps your plants happier and your panels in better condition longer. At the same time, the twin-wall design creates an insulating air pocket that helps retain heat at night – reducing the need for external heating.
Available in Standard Sizes – 6x4 and 8x6 Greenhouses
To make planning your garden layout easier, we stock polycarbonate greenhouses in popular standard sizes – especially 6x4 and 8x6 models. These sizes are ideal for UK gardens, offering a practical amount of growing space without overwhelming your outdoor area.
A 6x4 greenhouse is perfect for beginners or those with limited space, while 8x6 models provide ample room for growing vegetables, storing tools, and moving around comfortably. Both sizes are available as freestanding or lean-to configurations, so you can make the most of your space, regardless of your garden layout.
4mm Polycarbonate Sheet – Strong, Safe and Efficient
Most of our polycarbonate greenhouses come equipped with 4mm twin-wall polycarbonate sheets – the optimal balance of strength, weight, and insulation. These panels are lightweight enough to make installation simple, yet thick enough to resist wind, weather, and impact.
The 4mm polycarbonate sheet for greenhouse use is specially engineered for horticulture, offering excellent light diffusion and long-term performance. Compared to thinner alternatives or fragile glass, 4mm panels maintain internal temperatures more efficiently and reduce heating costs during colder months. If you're looking for a dependable, high-performance material – this is it.
Why Choose Polycarbonate for Your Greenhouse?
When selecting materials for your greenhouse, polycarbonate consistently ranks as a top performer. It’s light, flexible, and virtually unbreakable – ideal for family gardens, schools, and windy or exposed areas. Unlike glass, polycarbonate doesn’t shatter on impact, making it a safe option for households with children or pets.
Polycarbonate for greenhouse use is also highly efficient: the twin-wall structure traps heat and provides superior thermal insulation, helping you extend the growing season for your greenhouse. The semi-opaque finish diffuses sunlight, reducing plant stress and improving photosynthesis across the entire space. This makes it a favorite among vegetable growers and those cultivating more sensitive species.