Poly Greenhouses (Multi-Span & Tunnel)
A poly greenhouse is a commercial protected-cropping structure covered in PE film or polycarbonate sheet, ranging from single-span tunnels to fully engineered multi-span structures with climate control, delivering mid-tech performance at 30–60% of Venlo CAPEX.
Independent, supplier-neutral guidance. Vendor identities, price bands and shortlists are released only through the RFQ flow.
Role in the project
Poly greenhouses are the workhorse of mid-tech commercial horticulture — profitable for berries, herbs, leafy greens and vine crops in warm and moderate climates.
Typical applications
- Strawberry and blueberry commercial production
- Mid-tech tomato, cucumber and pepper in warm climates
- Herbs and leafy greens
- Nursery propagation
Selection criteria
Multi-year PE film (3–5 seasons) vs. twin-wall polycarbonate (10+ years) chosen on climate and hail exposure.
8–12 m spans, 4–6 m gutter for commercial cropping.
Continuous roof vents essential above 25 °C ambient.
Engineering considerations
Poly structures are wind-sensitive — regional load class critical.
Concrete piers or driven ground screws by soil condition.
Commercial considerations
USD 40–120/m² for engineered multi-span; USD 15–40/m² for tunnels.
Budget film change every 3–5 seasons.
Procurement considerations
Compare like-for-like: span, gutter, film grade, vent ratio and screen package.
Common mistakes
- •Choosing tunnel scope for a year-round export crop
- •Undersizing roof vents in hot climates
- •No thermal screen where night radiation losses are significant
FAQ
- Are poly greenhouses bankable?
- Yes, when engineered to code and paired with credible off-take. Development banks routinely finance multi-span polycarbonate projects.
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Financing & procurement tools
Scope a poly greenhouses (multi-span & tunnel) RFQ
Share crop, scale and country. A specialist scopes suppliers, engineering and financing.
Sourced through vetted breeding partners worldwide.