Kasconstructies

Kasconstructies are structures designed for growing crops under protected and controllable environmental conditions. They range from traditional glasshouses to modern plastic greenhouses and polytunnels, and are used in horticulture, floriculture, and research. The goal is to optimize light, temperature, humidity, and ventilation while protecting crops from adverse weather, pests, and diseases.

Common variants include glasshouses, glass houses with metal or aluminum frames, and plastic greenhouses with coverings such as polyethylene film or polycarbonate sheets. Polytunnels are lighter and often have curved roof profiles. Glazing and covering choices influence light transmission, insulation, and durability, while the frame material affects weight, strength, and corrosion resistance.

Construction and systems typically entail a modular frame, climate-control equipment, and ventilation. Frames are usually aluminum for lightness and corrosion resistance or galvanized steel for higher stiffness. Coverings differ in rigidity and thermal performance: glass provides durability and optical quality; plastics offer lower cost and better insulation. Integrated systems for ventilation (roof and side vents), shading, heating, cooling, irrigation, and fertigation are common, often guided by automation and sensors.

Structural and safety considerations address wind and snow loads, foundation type, and anchoring. Foundations may include concrete or anchored piles, designed to meet local building codes and agricultural standards. Maintenance focuses on frame integrity, glazing condition, and the proper functioning of climate-control equipment.

Kasconstructies support year-round production, extended growing seasons, and energy-efficient farming. They reflect a mature sector in Dutch horticulture, characterized by modular designs, continuous improvement in materials, and increasingly automated climate and crop-management systems.