Dual-Layer Built-Up Warm Roofing System

Warm roofs, with insulation placed above the structural deck, provide benefits such as improved thermal performance, better condensation control, and design flexibility. They are also known for their long-term durability and weather resistance, making them a reliable choice.

Metalcraft Roofing’s Espan 340 profile is now available as part of the ESPAN-THERM built-up warm roofing system, which features a single layer of PIR insulation to meet the latest H1 Energy Efficiency standards.

Choose from Metcom 7 or Kāhu for the internal steel layer, with Espan 340 as the external layer. Architects can also select different PIR thicknesses to meet specific R-value requirements for commercial roofing projects.

Looking for additional options? Explore Met-Therm, our screw-fixed Built-Up Warm Roofing System, available in:

Metcom 7
MC965
Kāhu
Metcom 930

Espan 340 Deep Trough Roofing and Cladding System

Metalcraft Roofing

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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 Roofing supply the Espan® 340 as a vertical wall cladding, and for 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

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

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

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.

Metcom 7 Roofing and Wall Cladding System

Metalcraft Roofing

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Metcom 7 Roofing and External Wall Cladding system is comprised of a long run steel sheet with a trapezoidal profile, along with associated design and installation information.

Metalcraft Roofing supply the Metcom 7 system as a horizontal and vertical external wall cladding, and for roofs with a defined minimum pitch for 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

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

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

If designed, installed and maintained in accordance with all Metalcraft Roofing requirements, the Metcom 7 Roofing and External Cladding system will comply with or contribute to compliance with the following provisions of the New Zealand 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.

Kāhu Roofing and Cladding System

Metalcraft Roofing

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Kāhu® is a steel roofing and external wall cladding system comprised of a long run steel sheet with a symmetrical profile, along with associated design and installation information.

Metalcraft Roofing supply the Kāhu® system as a horizontal and vertical external wall cladding, and for 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

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

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

If designed, installed and maintained in accordance with all Metalcraft Roofing requirements, the Kāhu® Roofing and External Cladding system will comply with or contribute to compliance with the following provisions of the New Zealand 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.

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