CROSS SECTIONAL LINE DRAWING
ESPAN-THERM® Espan® 340 / Kāhu®
ESPAN-THERM® / Espan 340 - Kāhu®
- About
- The Met-Therm® built-up warm roof system offers optimal thermal performance with a single layer of PIR insulation board. A key component of its design is a vapour barrier created by sealing the internal steel skin from the internal environment. This barrier is crucial for minimising the passage of internal moisture, which can compromise the system’s integrity and durability.
- Profile Cover Width (Nominal)
- 340 mm
- Sheet Width (Nominal)
- 354 mm
- Minimum Pitch
- 3° (minimum pitch will increase depending on sheet lengths - please refer to information sheet.)
- Application
- Commercial Roofing Only (Apartments, offices, schools etc with mechanically ventilated spaces) please contact technical support.
- Availability
- Available from all Metalcraft Roofing branches.
- Material Options
- Colorsteel® Maxam®. For other materials consult Metalcraft.
Downloads
Download AllInstallation details available for download in PDF, DWG, DXF & RVT files
BPIS Building Product Information Sheet
Redco Engineering Report Warm Roof
Branz Group Number Classification ReportFI17952-01-C1
Branz Assessment Report FC18786-01-1-C1
Met-Therm Batten Details
Met-Therm Batten Fixing Pattern
Eco Choice Certificates
Commercial Roof Details
Metalcraft Roofing Company Profile
Colorsteel Colour Brochure
INNOVATIVE CLIP ELIMINATES NEED FOR A SUBSTRATE
Espan® has a unique clip system that allows for concealed fixings. The Espan® roofing simply locks onto the clip and allows for superior weather performance as it eliminates the need for fixing penetrations through the pan.
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COLORSTEEL® Colours
All colours are available in COLORSTEEL® MAXAM®. Please note colours below are indicative and we recommend you request a steel colour sample from your nearest Metalcraft Roofing branch. The homeowner should be aware that temperatures of dark colours are higher than those of lighter colours. Darker colours will thermally expand more. Thermal expansion of metal roofs is covered in the MRM Code of Practice. The MBIE document on roof cladding advises that noise from thermal expansion is normal and should be expected. Refer to MBIE -Guide to tolerances, materials and workmanship in new residential construction 2015.
Cloud
Titania
Gull Grey
Sandstone Grey
New Denim Blue
Grey Friars
Windsor Grey
FlaxPod®
Thunder Grey
Slate
Ironsand
Ebony
Lichen
Mist Green
Permanent Green
Karaka
Desert Sand
Scoria
Pioneer Red
Lignite
OIL CANNING
Oil canning is an inherent characteristic of gauge cold formed metal products, particularly products with broad flat areas like Espan®. It is seen as waviness or distortion in the flat surfaces. Oil canning does not affect the products strength or performance . The architect, builder and homeowner needs to be aware that oil canning may affect the overall aesthetic outcome. Oil canning may occur during the roll-forming process and or during installation and where thermal expansion occurs. Please refer to MRM NZ Metal Roof and Wall Cladding Code Of Practice - Section 2.3.5 for more information. (www.metalroofing.org.nz). Refer also to MBIE -Guide to tolerances, materials and workmanship in new residential construction 2015 which advises oil canning is a common occurrence with products which have standing seams or wider profile patterns. This is not considered a defect and will become less apparent with weathering. The end result of the profile is dependent upon the quality of the timber substructure that supports it so it is critical that the roof purlins be square and level for optimum results.