Quality multi-span greenhouses to suit all needs

Gutter connected greenhouses from basic crop cover through to vented structures

Multi-span or gutter connected greenhouses have developed from basic crop cover, ie. “ECONOSPAN” to top vented structures including “VENTMASTER” and “SUPER-VENTMASTER” designs. Multi-span greenhouses are available with variable wall height, span width, vent location and orientation. The Multi-span greenhouse today offers low cost, effective, well ventilated coverage for all growing applications.

  • Low cost
  • Effective
  • Well-ventilated

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The “Ventmaster” is a tall airy multi-span greenhouse with continuous roof venting. The rack and pinion operated vents can be opened manually or automatically allowing excellent ventilation, particularly for dense foliage hydroponic crops. The “Ventmaster” utilises twin skin inflated polythene which provides extra insulation, reduces condensation and maximises stability of the greenhouses.

The 3.3m or 4m high walls, 6.4m wide spans, post spacing 4m apart to enable efficient crop layout.

The galvanised steel frame is robust enough to support a heavy crop, irrigation booms or thermal screens. The “Ventmaster” multi-span greenhouse is built to Terrain Category 2 wind loads. The “Ventmaster” system is easily containerised for shipment to any destination. Croft can supply building crews or supervision to enable quick & efficient construction of your greenhouse.

Features Specifications
Continuous roof venting Span: 6.4m
Rack and pinion operated Post spacing: 4m
Computer controlled for temperature, humidity, wind speed and wind direction Wall height: 3.3m or 4m
Single- or twin-skin polythene 180um covers Overall height: 4.8m or 5.5m
Heavy duty gutters
Built to terrain category 2 wind loadings

sventmaster-logoThe “Super-Ventmaster” is the latest release from Croft. This 9.6m span greenhouse has a gothic shaped roof line which not only maximises light, but allows efficient run-off condensation.

The Super-Ventmaster” multi-span greenhouse is top vented with both a wall height and post spacing of 4m and an overall height of 7m, which provides plenty of atmosphere above the crop.

The Super-Ventmaster multi-span greenhouses is ideal for hydroponic installations as the structure confirms to a Terrain Category 2, which is robust enough to support a full crop, incorporating a hanging gutter system.

The twin rack and pinion roof vents supply adequate ventilation providing an excellent multi-span greenhouse growing environment for all crops.

Features Specifications
Wide-span allows for improved crop layout Span: 9.6m
Twin vents maximise air movement Post spacing: 4m
Increased height, provides greater ‘atmosphere’ over crop Wall height: 3.3m or 4m
Single- or twin-skin polythene Overall height: approximately 7m
Internal structure allows for easy installation of thermal or shade screens
Structure will support heavy crops and hanging gutters
Side vents manual or automatic if required

The “Econospan” multi-span greenhouse design allows for fully welded truss hoop frames at an economical price. 2.4m or 3m high walls, 6.4m or 9.9m wide spans and lengths available in any 2.1m modules.

The Econospan is designed to a Terrain Category 2 wind rating and can be clad either with single or double layer polythene or shade cloth. Wall cladding can be either fixed polythene or shade cloth with solar weave winch operated roll up curtains.

Ends can be fitted with butterfly vents. The Econospan multi-span greenhouse has full internal bracing, strong galvanised guttering which allows for quick and secure polythene fixing and easy installation of thermal/shade screens.

The Econospan multi-span greenhouse is available in kit form or can be erected by our experienced construction team.

Features Specifications
Budget multi-span Span: 6.4m up to 10m
Ventilation walls Wall height: 2.4m or 3m
Available in ‘crop cover’ only
Can be adapted to pine posts
Single or twin skin covers
Easy walking galvanised gutters
Built to terrain category wind loadings

The “Sawtooth” design allows for ventilation to run the full length of the greenhouse.

The Sawtooth multi-span greenhouse is designed to a Terrain Category 2 wind ratings and can be clad either with single or double layer polythene or shade cloth. Wall and roof vent cladding can be either fixed polythene or shade cloth with manual winch operated roll up solarweave curtains or rack & pinion operated vents.

The Sawtooth is a strong, sturdy and fully engineered unit with safe easy walk guttering. The Sawtooth is available in kit form or can be erected by our experienced construction team.

Features Specifications
Design allows for ventilation through roof and wall vents Span: 6.4m up to 10m
Manual or automatic vent curtains Wall height: 2.4m or 3m
Most croft designs can be adapted to quarantine standard
Croft Polythene greenhouses P/L is a registered builder
All work is covered by insurance
All construction performed by experienced croft personnel