How to match a greenhouse door

As a critical access point and environmental control node, greenhouse doors vary in requirements depending on the type of greenhouse. Therefore, factors such as size, material, opening mechanism, appearance design, construction, and maintenance must be considered during selection. Many farmers often face issues like heat leakage, frequent repairs, and poor wind resistance due to incorrect door choices. Today, we will help you accurately match the right door for different types of greenhouses, ensuring every investment is spent wisely!

1. Sunlight Greenhouses/ Seasonal Sheds: Prioritize Thermal Insulation and Sealing

These greenhouses rely on natural sunlight for heating, so the door's insulation directly affects the day-night temperature difference. Double-layer composite insulated doors are recommended, with an inner layer of high-density thermal cotton and an outer layer of anti-aging PVC-coated fabric, edged with EPDM sealing strips. In winter, they can reduce heat loss by over 30% and withstand cold northern winds. For those on a budget, roller shutters with added insulation blankets are a cost-effective alternative—rolled up during the day to avoid blocking light and lowered at night to lock in heat tightly.

2. Multi-Span Greenhouses/ Smart Greenhouses: Focus on Convenience and Intelligence

With large areas and frequent access, electric sliding doors are the ideal partner! Remote control allows one-touch operation without manual pushing or pulling. Equipped with infrared sensors, they avoid collisions with crops or machinery. For logistics transport, customized wider and taller versions can accommodate forklifts and trucks. Farmers seeking advanced intelligence can opt for electric doors integrated with the greenhouse control system, automatically adjusting opening duration based on indoor temperature and humidity for unmanned management.

3. Seedling Sheds/ Special Crop Sheds: Emphasize Ventilation and Protection

Precise ventilation control is crucial during the seedling stage, and mesh composite doors are perfect for this! The outer layer features a 60-mesh insect-proof net to prevent aphids and whiteflies, while the inner layer is a retractable film curtain. On sunny days, the mesh is opened for ventilation and cooling; on rainy days, the film is lowered to block rain. This keeps pests out while maintaining air circulation, protecting seedlings from diseases. Farmers growing high-value crops (e.g., strawberries, grapes) can also choose anti-theft doors with code locks to safeguard their harvest.

Choose the Right Material for a Decade of Use: In northern regions, opt for galvanized steel frames with cold-resistant Oxford fabric to withstand snow load and prevent freezing cracks. In southern areas, aluminum alloy frames with waterproof canvas are recommended for their lightweight, corrosion-resistant properties and ability to resist typhoons.

Don’t Overlook Sealing Details: Add rubber strips at the door bottom to prevent cold drafts from gaps. Use Velcro or zipper designs on the door frame sides for easy operation and tight sealing, helping maintain constant temperature and humidity inside.

Match Load-Bearing Capacity: If the door frequently accommodates agricultural machinery, the frame should support over 500kg, with stainless steel pulleys for smooth sliding and reduced maintenance issues.

High-quality greenhouse doors, with their meticulous sealing design, effectively block air convection between inside and outside. In winter, they reduce heat loss and lower heating energy consumption; in summer, they isolate external high temperatures and reduce the operation frequency of cooling systems, cutting energy costs at the root.

Additionally, excellent airtightness prevents insects carrying pathogens and dust from entering, reducing the spread of pests and diseases, lowering the risk of crop infection, and decreasing pesticide use. This not only improves crop quality but also reduces planting costs.

Clearly, choosing the right greenhouse door is a key step towards energy-efficient and healthy production in greenhouse farming, offering significant economic and ecological benefits for growers.