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Espan 340 Deep Trough Roofing and Cladding System
Description

Espan® 340 is a Roofing and External Wall Cladding system comprised of a 49mm deep trough profiled steel sheet, along with associated design and installation information.

Metalcraft fabricates the Espan 340 sheets from steel manufactured by New Zealand Steel. This steel is supplied with different protective coatings which are designed to withstand conditions in specific New Zealand Corrosion Zones.

Key Features
  • High ribs for strong defined shadow lines 
  • Suitable for roofing, and vertical cladding
  • Ideal for low pitch roofs (3° minimum)
  • The sheet profile is available as a flat pan or with one or two swages incorporated into the pan
  • Hidden clips attach directly to purlins
  • Clip-on solar panels may also be installed
  • Espan 340 sheets are available in Colorsteel® Endura® and Colorsteel® Maxx®
  • Espan 340 sheets are available in the following sizes:
    • Thickness: 0.55mm
    • Width: Cover = 340mm, Sheet = 354mm
Scope of Use

Metalcraft Roofing supply the Espan® 340 as a vertical wall cladding, and on roofs with a defined minimum pitch of 3 degrees for use on commercial and residential buildings within the following scope:

Location:

  • In wind zones:
    • Up to and including Extra High as defined by NZS-3604:2011.
    • Subject to specific engineering, if the engineer has satisfied themselves that the product, pitch and fixings will meet the conditions
  • In all climate zones as defined by NZS-3604:2011, subject to the limitations set out below
  • On buildings located within 1m of the relevant boundary, in respect of fire spread only

Building:

  • On new buildings that have been designed and constructed to comply with the NZ Building Code (NZBC) using timber or steel framing
  • On existing buildings using timber and steel framing where the designer and installer have satisfied themselves that the building is suitable for the intended building work
  • In conjunction with a vapour permeable building wrap that has a permeability of 36g/m2/day of a vapour resistance of no more than 500MNs/g
  • Can be used in conjunction with a potable water collection system
Limitations on Use

Location:

  • Espan® 340 may be used as a roof cladding system in exposure zones B, C & D as defined in Sec 4, NZS3604:2011. For use in 'Microclimatic considerations,' (as defined in Sec 4.2.4) refer to Metalcraft Roofing
  • Espan® 340 may be used as a wall cladding system in exposure zones B & C
  • Where Espan® 340 is to be used in exposure Zone D, then only Colorsteel Endura or Colorsteel Maxx may be used

Building:

  • Where Espan® 340 is used in an insulated building in conjunction with steel framing, a thermal break is required. This will depend on the location of the insulation layer. Timber thermal breaks are recommended
  • Contact with other materials must be in accordance with Table 21 (E2/AS1), or compatible with the The New Zealand Metal Roofing Manufacturers Association Inc (NZMRM) Code Of Practice
  • Building height and design wind speed is limited by the Espan 340 design load span tables
  • Where it is used as a roof cladding system, Espan 340 sheet lengths of ≤40m must be installed on a roof with a minimum pitch of 3°. Espan 340 sheet lengths of >40m but less than <60m must be installed on a roof with a minimum pitch of 4°
  • Espan 340 must always be installed in conjunction with a drained cavity
3° Minimum Roof Pitch Required
NZS 3604 Corrosion Zone D suitable
Corrosion Exposure Zone D
NZS 3604 Wind Zone Extra High suitable
Extra High Wind Zone
NZS 3604 Wind Zone Specific Design suitable
Specific Design Wind Zone
Statement of Building Code Compliance

If designed, installed and maintained in accordance with all Metalcraft Roofing requirements, the Espan® 340 Roofing and External Cladding system will comply with or contribute to compliance with the following provisions of the NZ Building Code:

  • B1 Structure: B1.3.1, B1.3.2, B1.3.3 (a, b, c, d, g, i) 
  • B2 Durability: B2.3.1 (b)
  • C3 Fire Affecting Areas Beyond the Fire Source: C3.4(a), C3.5, C3.7 (a)
  • E2 External Moisture: E2.3.1, E2.3.2, E2.3.7 (a-c)
  • F2 Hazardous Building Materials: F2.3.1

See product technical statement for full information.

Other Performance Attributes
  • Espan® 340 Roofing and External Cladding system will not contaminate potable water — AS/NZS 4020:2005
B1 Structure compliant
Structure
B2 Durability compliant
Durability
C Protection from Fire compliant
Protection from Fire
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
Documents
CAD/PDF Link
Loadspan Graph and Fixing Table
Fire Testing Document
Environmental Category Brochure
Product Technical Statement

02/2022

Product Brochure
Colour Range
CAD/PDF Details
Commercial Roof Details
Commercial Roof Details DWG

2018

Commercial Roof Details DXF

2018

Commercial Vertical Cladding Details
Commercial Vertical Cladding Details DWG

2018

Commercial Vertical Cladding Details DXF

2018

Residential Roof Details
Residential Roof Details DWG

2018

Residential Roof Details DXF

2018

Residential Vertical Cladding
Residential Vertical Cladding Details DWG

2018

Residential Vertical Cladding Details DXF

2018

BIM
Commercial Roof Details RVT
Commercial Vertical Cladding Details RVT
Residential Roof Details RVT
Residential Vertical Cladding Details RVT

Metalcraft Roofing are a privately owned building product rollformer and installer with an extensive range of longrun roofing profiles, lightweight metal tiles and rainwater system solutions.

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