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Steel and aluminium roofing sheets are produced by MCRMA members in a wide variety of profile shapes, coatings and colours. The details below are for general guidance and full details of products should be obtained from the individual manufacturers. Component and system durability is discussed in Section 9.0. 2.1 Profiled sheets
INTRODUCTION. The roof substructure is an integral part of the roof system. It lies just beneath the metal roof panels and serves two primary functions. First, it acts as a base to which the metal roof material is attached. For metal roofs, the roof substructure secures the fasteners and clips used to hold the panel.
Steelscape's metal roofing and siding design guide library gives you the information you need to select the right colors for your project.
Figure 1. Material Specifications: ZINCALUME® steel resin coated, minimum metallic coating mass is AZ150 (150g/m2), minimum yield strengths of G550 (550MPa) complies with AS1397 or IS15961. COLORBOND® XRW is pre-painted steel for exterior roofing and walling.
The designated fastener is selected based on such factors as the material and thickness of the roof panel, insulation, substrate, and structural members of the roof system. Other factors like wind resistance and roof load are also used in determining the correct fastener for the installation.
Sheets generally give 1m width cover after lapping and can be cut to any length up to 5m for tile sheets, 6m for 13/3 corrugated and 32/1000 profile sheets and 8m for 34/1000 profile sheets. Flashings are available in standard lengths of 3m.
This manual follows the “architectural” or “steep slope” installation method which applies a point of fixity at the high end of the panels (i.e. ridge, hip, high wall, and peak). Expansion and contraction is accommodated at the low end of panels (i.e. eaves and valleys). c. Oil-Canning.
