Vented roof designs

The Redpath pitch roof ridge vented designs are the top of the line greenhouse models from Redpath. They are fully NZ building code compliant design engineered structures, utilising strong RHS steel, HDG poles, 12mm fully bolted 4mm plate connections, and cold rolled ‘walk-through’ wide steel gutters as standard.  These greenhouses  are used for year-round production of vegetables, flowers and nursery crops that require accurate environmental control.

These designs may be twinskin or singleskin clad with Duratough 215 micron film. The cosecant rafter “A” frame truss design is a unique Redpath feature and it allows superior light transmission through to the crop via reduced overhead structural shading. 

The ridge ventilation system can be either single facing or double ridge “gull wing”. The roof ventilator also includes aluminium draft strip upstands along the full length of roof vent closure points which provide a superior weather flashing and vents are fully automatic operating or available with a manual option.
A full length side wall rack & pinion tilting 1m width window vent can also be fitted, in either Auto or manual form, these have the advantage of being extremely reliable and may be opened even when raining.

Gutters are a solid long-life 250mm wide structural part, and are a ‘walkthrough’ design. All gutters have a powder coated exterior and include a 100% rust-proof rain head at gutter ends. The gutters are included standard on outside pole lines also.

Redpath operates 16 construction teams, we manage the building permit application and can help with resource consents if they arise. We then build on your site using local builders that then continue to offer local after sales service. Redpath have supplied and erected 1000s of these designs throughout our nearly 40 year history. A full set of registered engineers drawings and Producers statement for council building permit processing are included as standard.

Redpaths 5 Year gold series warranty applies

Basic Specifications: NZ Design registration, PS1 form included for building permit
Span / Bay Widths: 6, 8, 9.6, 10.65, 11.2, 12.6, 13, 14, & 15m spans (you can connect multiple spans side-by-side)
Post spacing lengthways: 3 metres between posts (spacer beam for 6m centres is an option)
Height to top edge of gutter: 3m, 3.5m, 4metres
Gutter design: V type steel, Walk-through, Powder coated exterior, drip tray included, Overlap sealed joints, Duralock & Rainheads included
Apex height: Up to 7 metres
Roof Ventilation Design: Optional Double ridge or Single ridge vent system (or can be non-vented)
Vent drive systems: High quality European design and equipment, with manual option.
Roof vent upstand flashings & end weather flashings: Yes included as standard
Side manual ventilation: Roll up wall, manual or optional automatic.
Side automatic ventilation: Rack & pinion tilting window vent, full auto operation, operates in rain or shine
Sidewall Fans:  A forced air fan extraction system or add matching cooling pad inlet pad system.
Vent mechanism: Durable geared rack and pinion system, European quality
Roof cladding: Double or Singleskin Duratough 215micron or white heat reflective film
Wall cladding: Double or Singleskin
Greenhouse film anti-fog package: Included anti drip feature within the cladding
Greenhouse film tensioning system: Included on Singleskin designs for wide sheet areas of roof.
Frame Guard Tape: All roof members that touch the cladding include Polyguard felt frame protection for longer cover life
Doors: Sliding door with aluminium framed, aluminium base sheet with clear acrylic top section panels, doors may be in end or sidewall
Footings: Typically 1.3 metre deep x 0.450 diameter (soil type dependent), Poles are sleeved for superior anti-corrosion
Wind load: 120kph, greater if required
Crop loading: 30kg m2, greater if required, crop kit system included on request. (overhead wire location by client)
Snow load: Yes, snowload compliant up to 50kg m2
Installation: Yes nationwide including building permit application/processing. Kitset only is also an option.
Main assembly: All bolted design, HDG or Zinc + Powder coated surfaces
Warranty: Yes, manufacturer’s warranty & maintenance schedule included (conditions apply)

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