Wintergardenz 6mm Polycarbonate Greenhouse | 10ft Wide

Polycarbonate is lighter, far more impact resistant and holds warmth better than a single pane of glass, so it suits growers who want a durable, low-maintenance structure in an exposed yard. Our glasshouse range, glazed in 4mm toughened glass, is the better choice if the clearest possible view and a more traditional look matter more to you than impact resistance.

The twin-wall polycarbonate is UV-stabilised with UV coating on both sides, backed by a 10-year warranty against breakage and discolouration. UV-stabilised polycarbonate of this kind is widely reported across the industry to resist yellowing well beyond a decade, considerably longer than untreated sheet, though the 10-year warranty is the figure to rely on for this specific product.

Yes. Multiwall polycarbonate is independently reported to be around 200 times more impact resistant than glass of the same size, so it flexes under a hail strike rather than shattering. It's one of the real practical reasons growers in hail-prone areas choose polycarbonate over a traditional glasshouse.

The twin-wall structure traps a layer of air between the two polycarbonate skins, which insulates noticeably better than a single pane of glass, so it holds warmth longer on cold nights. Polycarbonate can show more condensation on the inner surface in humid conditions than smooth glass, but it won't fog badly enough to block the light your plants need, and the roof vents help keep that moisture moving.

Yes, for most home growing. Diffused light through twin-wall polycarbonate spreads more evenly across the growing space and can help reduce leaf scorch compared with direct sun through clear glass, though glass remains the clearest option if maximum visibility matters most to you.

Yes. Every size in this range includes adjustable, lockable opening roof vents, with automatic vent openers available as an accessory if you want the vents to respond to temperature on their own.

Yes. The frame and glazing system carries a 150 km/h wind rating, well above the 90-100 km/h ratings published on the closest big-box polycarbonate greenhouse alternatives we could find, with a rubber bead seal designed to keep panels locked into the frame rather than lifting out in gusts.

The 10-year warranty covers breakage, so a damaged panel within that period is covered. If you ever need a replacement panel outside the warranty period, contact us and we'll check availability with Wintergardenz for your exact size before you commit to anything.

Both ranges share the same aluminium frame, 150 km/h wind rating, sliding doors and guttering. The difference is the glazing: this range uses 6mm twin-wall polycarbonate, which is lighter, safer around kids and pets and more impact resistant. The glasshouse range uses 4mm toughened glass, for the clearest view and a more traditional look. Choose polycarbonate if durability and safety come first, or glass if visual clarity matters most to you.