When planning to build an agricultural greenhouse, cost per square meter matters, but covering material choice is more critical. Among all options, greenhouse glass is undoubtedly the optimal choice—excelling in light transmittance, durability, crop adaptability, and long-term value. While PC and sun panels (greenhouse glass substitutes) are cheaper, they have obvious flaws that make them inferior.
It helps you choose rationally based on needs, budget, and long-term goals.
1. All-Glass Greenhouses: Greenhouse Glass as the Optimal Choice
Fully covered with high-quality greenhouse glass, all-glass greenhouses are the gold standard for modern cultivation, with unmatched properties. The top uses 5mm tempered or diffuse greenhouse glass (impact-resistant, shatterproof, weatherproof), and walls use 5+6+5 hollow tempered greenhouse glass (excellent insulation + over 90% light transmittance). Two structural types offer different prices but fully leverage greenhouse glass’s advantages.
1.1 Dutch Venlo Model (High-End Optimal Option)
Combining aluminum alloy components with premium greenhouse glass, it maximizes greenhouse glass’s benefits: long-term intactness, high transparency, and uniform light—advantages PC/sun panels lack. Elegant and ideal for commercial use, it costs about $120 per square meter (5000㎡, including greenhouse glass and installation). Adding a smart system enhances its value, fitting large high-tech operations.
1.2 Galvanized Sheet Gutter Model (Cost-Effective Optimal Option)
Using standard greenhouse glass, it retains core advantages at ~$100 per square meter (greenhouse glass is a major cost). Far superior to substitute materials, it offers 20-30 years of service, over 90% light transmittance, and easy crop monitoring. Its only minor downside—high initial cost—is a worthy investment vs. substitute maintenance costs.
2. PC Greenhouses: Substitute with Obvious Shortcomings
PC glass greenhouses use 8mm UV sun panels (greenhouse glass substitutes) on the top and hollow glass on walls—cheaper but inferior. Costing ~$80 per square meter, PC panels are lightweight but cannot match greenhouse glass’s transmittance and durability.
A major flaw: PC panels yellow and age after 5-8 years, reducing light transmission and requiring full replacement, increasing long-term costs. With lower impact resistance and lifespan than greenhouse glass, they are only for budget-constrained growers who cannot afford greenhouse glass.
3. Full Sun Panel Greenhouses: Budget-Friendly but Deficient
Full sun panel greenhouses use sun panels (low-cost greenhouse glass substitutes) for all surfaces—cheapest ($50-$70 per square meter) but most flawed, a last resort if greenhouse glass is unaffordable.
Sun panels have low transmittance (70-75%), short lifespan (10-15 years), and poor impact resistance, needing frequent replacement. Arched models are cheaper for small, budget-limited growers but unsuitable for light-demanding crops, never matching greenhouse glass’s performance.
