Smart aluminium greenhouse construction with high light transmission

Since its introduction, the Lumenex^® Venlo roof system has been further developed in many aspects in order to meet with the needs of modern horticultural businesses. The potential of aluminium achieves high strength, light transmission and energy efficiency. BOAL offers a range of gutters, bars, ventilators, glass support systems and PVC cappings to adjust the roof system. Also connection profiles are delivered to create smooth transitions to surrounding buildings and sidewalls.

Much of the strength in the Lumenex^® roof system is obtained from the gutter-post connection, the bar-gutter connection and the moment tight roof bracing. In all connections a broad support base is created and slack is minimized.

The Lumenex^® roof system is designed smart:

• The profiles are tapered to optimize the direct entry, absorption and reflection of light
• PVC cappings are available with insulators between the aluminium and the glass and a threefold sealing
• The gutter has an insulation chamber to prevent the convection of heat and has an additional gutter for the drainage of condensation water
• Flat transitions between the glass and the bars avoid dirt accumulation and ensure a smooth watercourse during rainstorms.

To increase the light transmission the grower can choose for very low roofbars, narrow gutters, large span widths, large glass sizes and tempered glass ventilators. To optimize the energy efficiency and water tightness of the system, the grower can choose to use narrow gutters with insulation chambers, the Double PVC system on the bars and cover strips on the ventilators.

The standard Lumenex^® roof system is available in span widths of 3.20, 4.00, 4.27 and 4.80 meters and can be fitted with 4 or 16 mm cover material.