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The principle of fully supported secret fix roofing is centuries old and is seen on cathedral and church roofs. The materials used were mainly malleable such as lead and copper. Roll-formed self-supporting secret fix originated in Australasia/USA approximately 35-40 years ago. They were introduced into Europe approximately 25-30 years ago and into the UK approximately 15-20 years ago. Self-supporting secret fix roofing systems were introduced to reduce the risk of leakage at fasteners and side and end laps. Their success can be seen in the increasing market share they are taking. Their design features allow metal roofing into new markets such as very low pitch roofing as a competitor to fully sealed membrane roofing. The materials for roll-formed secret fix roofing are primarily steel and aluminium, although other materials are used but to a smaller degree. Most of today's profiles are based on original Australasian/American concepts. |
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Technical Papers 
Recommended Good Practice for Daylighting in Metal Clad Buildings  |
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