This wide span glass greenhouse uses a hot-dip galvanized steel frame and 4mm tempered glass. The wide bay keeps the floor clear of internal posts, so tractors and trolleys move freely between the crop rows. Roof and side vents control heat and humidity, and span, length and height are set to the site. It suits commercial vegetable, fruit and flower growers who want long service life and steady light.
This wide span glass greenhouse covers a large growing area under a tempered glass roof. The frame is built from hot-dip galvanized steel pipe, and the glazing is 4mm tempered glass. The wide bay lowers the number of internal posts, which leaves a clear floor for crop rows, trolleys and light machinery. Spans run from 8m to 12m and total height from 3m to 8m, so the house can be sized to a commercial vegetable, fruit or flower operation.
The frame uses hot-dip galvanized steel pipe. The zinc coating protects the steel in the humid air of a working greenhouse, which keeps the structure sound through years of service. Trusses tie each wide bay together, and the whole frame is bolted together on site from a knockdown kit.
The covering is 4mm tempered glass. Tempered glass is heat treated so it breaks into small granules rather than long shards, and it holds light transmission of 90% to 95% across the crop. Glass does not yellow or sag the way some plastic covers do, so the light reaching the plants stays steady over the life of the house.
| Structure material | Hot-dip galvanized steel pipe |
| Covering material | 4mm tempered glass |
| Span | 8m / 9m / 10m / 11m / 12m |
| Length | 10m to 100m, or to client demand |
| Total height | 3m to 8m |
| Light transmission | 90% to 95% |
| Ventilation | Roof vents, side vents or automated systems |
| Wind / snow load | 0.35 kN/m2 each |
| Service life | 15 to 20 years under normal growing conditions |
| Applications | Vegetable, fruit and flower cultivation |
A wide bay glass house keeps more of the floor in production. Fewer internal posts mean more clear space for crop rows, and the tall glass walls give the light and headroom that trellised crops need. FAO notes that protected cultivation of this kind extends the growing season and raises yield per square metre in many climates.
Glass also outlasts film and rigid plastic sheet. It does not lose light transmission through yellowing, and a broken pane can be replaced on its own without touching the frame. For a grower planning a long asset life, that counts.
Roof vents and side vents move hot air out and pull cooler air in. On a wide bay house the vent area can be set to the crop and the local climate, and the vents can be tied to an automated system so the house holds its target temperature through the day. HortiDaily covers how commercial growers plan this type of structure.
The frame ships as a knockdown kit of galvanized pipe and connectors, and the glass is supplied in crates. Assembly follows a set sequence: set the foundation, raise the trusses and bays, then fit the glazing and seals. Our engineers can travel to site to guide installation when required.
Routine work is limited. Check the glazing clips and seals after storm season, wash the glass if dust builds up enough to cut light, and inspect the pipe joints for movement. The galvanized frame is rated for 15 to 20 years under normal growing conditions.
This wide span glass greenhouse suits commercial vegetable and fruit production, flower growing and general horticultural cover work. Because span, length and height are all set to demand, the same frame system fits a small holding or a large estate. Browse the full range on our glass greenhouse page, or compare it against the polycarbonate greenhouse and film greenhouse ranges.
The tempered glass holds its light transmission for many years, and the hot-dip galvanized steel frame is rated for 15 to 20 years under normal growing conditions.
The covering is 4mm tempered glass. Tempered glass is heat treated so it breaks into small granules rather than long shards, which is safer around workers and crops.
Span is available in 8m, 9m, 10m, 11m and 12m. Total height runs from 3m to 8m, and length from 10m to 100m or to your site requirement.
Roof vents and side vents move hot air out and pull cooler air in. The vent area is set to the crop and the climate, and the vents can be tied to an automated system to hold a target temperature.
The frame ships as a knockdown kit of galvanized pipe and connectors, with the glass in crates. Our engineers can travel to your site to guide installation when required.
