Metal Roof Structural Details

Specifying a metal roof requires an understanding of all the parts structural system.

Metal roof structural details.

Steel is heavier than other metal options but as a result is sturdier and can be coated with a range of finishes to provide protection against rust and corrosion as well as to provide colour. There are numerous panel configurations thicknesses coatings and detailing that are available. Structural steel the structural elements that make up the frame that are essential to supporting the design loads e g. When a metal roofing sheet must be installed on a curved roof.

Structural metal roofing panels. Structural panels are either mechanically seamed or snapped together depending on the design. Aluminum roofing and siding sheets are rollformed from hard ened tempered metal for maximum strength. Metal roofing materials are primarily manufactured from aluminium and steel as they are economical relatively easy to work are durable and able to receive a number of different finishes.

Structural roofing panels are designed to span across open purlins and can carry snow and wind loads without a solid deck. Structural metal roofing panels have higher seams typically between 1 and 3 inches tall. Single ply roofs metal standing seam green roofs asphalt and bitumen roofs. The spacer system in a double skin metal roof is used to create a cavity between the liner and weather sheet for the layer of insulation.

Beams columns braces plate trusses and fasteners. It does not include for example cables ladders chutes grating stairs catwalks handrails or ornamental metal. Steel 0 75mm 0 88mm 1 25mm interior liner white finish. Structural metal roof panels can be installed on slopes as moderate as 1 4 12.

The spacers are structural items which support the weather sheet and they are always positioned over purlins or other structural members and must be fixed securely to them. A hot roof is a roof designed not to have any ventilation and has enough air impermeable insulation in contact with the sheathing to prevent condensation 10 such as when spray foam insulation is applied directly to the under side or top side of the roof deck or in some cathedral ceilings. 4 5 to 7m long spanning capability eliminating purlin requirements. Ideal for low deflection design on large scale buildings.

A rugged structural platform for all roof types. A warm roof is a roof that is not ventilated where the insulation is placed in line with the roof pitch. If a sheet must be bent a gentle 90 degree bend is the maximum recommended.