Double Roofs is defined as a roof framing system in which the rafters rest on purlins.

The Basic elements of the double or purlin roof are rafters and purlins. In Double Roofs, if the length of the span is larger than it required an intermediate support. This support is usually a beam which is protected under the rafters at a point between the ridge and the wall plate. This beam is known as purlin. Purlin is used to reduce the size of the rafters and to make a structure in economical range.

In This Roof, Each Rafter is Supported at Three Points:
- At the bottom; on the wall through wall plate

  • - At the top; by the ridge
  • - At the centre by a purlin.

    At AMAC Roofing Sheeting Cladding Ltd our double skin roofing services are in no way limited, please contact us

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