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Certified Structures
Each structure is rated against NBCC & ASCE snow load standards. See how our greenhouses perform at every PSF range — from mild coastal winters to extreme mountain snow.
What does PSF mean for your structure?
<10 PSF — Light as a dusting. Minimal load; virtually any structure handles this. 10–20 PSF — Moderate snowfall. Standard structural steel manages comfortably. 20–35 PSF — Heavy accumulation. Reinforced framing becomes important. 35–50 PSF — Serious load. Commercial-grade steel & closer purlin spacing required. 50–80 PSF — Near-mountain conditions. Heavy-duty trusses essential. 80+ PSF — Extreme alpine zones. Engineering sign-off recommended.
At 25 PSF, this structure handles moderate seasonal snowfall — climates where winter shows up but doesn't overstay its welcome. A solid all-around choice for growers who see regular snow but not the heavy sustained loads of colder inland regions.
At 70 PSF, this is built for serious winters — sustained, heavy, and unforgiving. Thicker steel throughout, arches set tighter together, and two extra purlin runs give it nearly triple the capacity of the Standard.
At 15 PSF, this structure is designed for mild climates where winter is light and snow is rare or fleeting. It's not built to carry a load — it's built to be economical, fast to erect, and effective where the weather cooperates.
At 50 PSF, this is the hoop tunnel built for real winters. Thicker steel, tighter arch spacing, and two extra purlin runs transform the same semicircular footprint into a structure that handles serious seasonal snow with confidence.
Built for growers who need full photoperiod control with blackout capability. Same arch geometry and wall height as the high tunnel lineup — engineered for moderate snow loads with light deprivation built in.
At 80 PSF, the most capable light deprivation structure we offer. Tighter arch spacing than any other model delivers full blackout control with heavy-winter capability built in.
At 69 PSF, this is an AISC 360 LRFD-engineered commercial multi-span — Fink truss with X-bracing, gutter-connect ready, and available in custom run lengths. Built for serious commercial growers in very high snow regions who need scale and structural certainty.
At 90 PSF, the highest-rated structure in the lineup. All structural members at 2.5mm wall — 25% more section capacity than the Standard. AISC 360 LRFD-engineered with Fink truss, X-bracing, and gutter-connect ready for commercial-scale operations in extreme winter environments.
At 35 PSF, the Mini Standard is a compact 10ft-wide trussed greenhouse with a genuine bottom cord, W-diagonal, and return pipe — not a bare hoop. All structural members in Ø48mm galvanized steel. The right choice for smaller operations, market gardens, and growers who want proven steel at a compact footprint.
At 45 PSF, the Mini Heavy tightens the arch spacing to 4ft on centre, adding 29% more structural capacity in the same compact 10ft-wide footprint. Ø48mm galvanized steel throughout with a full W-truss system. Handles real winters without needing a full-width structure.