Roof Extensions

Sidewall roof extensions extend beyond the defined building width and are generally a continuation of the main building roof slope.
Endwall roof extensions extend beyond the defined building length and are constructed by extending the end bay purlins and eave struts of the main building past the endwall rafter.
Standard widths for roof extensions range from 900 mm to 1500 mm. Wider roof extensions are possible but may require heavier or additional framing. Soffit panels for roof extensions are optional.
Main building eave gutters are normally relocated to the edge of the roof extensions. Gutter drainage is by downspouts located at the building sidewall.

Canopies

Sidewall canopies are cantilevered rafters attached to the sidewall columns at any point below the eave and support 200 mm deep by-pass "Z" purlins supporting the canopy roof panels.
Endwall canopies are cantilevered rafters along a uniform elevation attached to the endwall posts below the roof line and support by-passed 200 mm deep "Z" purlins supporting the canopy roof panels.
Optional canopy soffits conceal only the canopy purlins, leaving rafters exposed, unless otherwise specified.
Unless otherwise specified, the roof panels of the canopies will match the color and profile of the main building roof
The width of a canopy depends on the size of the sidewall column or endwall post supporting it. Practical widths range from 1500 mm to 3000 mm. Wider canopies are possible but require heavier sidewall columns or endwall posts.
The length of a canopy is ideally a multiple of bay lengths of the sidewall or a multiple of column spacings of the endwall.

Fascias and Parapets

Vertical fascias consist of 200 mm deep vertical posts supported by brackets from sidewall columns or endwall posts.
Cold-formed 200 mm deep "C" section top and bottom girts are flush-framed to the vertical fascia posts. An intermediate"C" girt positioned vertically is supplied to support a valley gutter, when required.
Standard vertical fascias project 600 mm from the building sidewall or endwall steel lines. Projections exceeding 600 mm are possible but may require heavier sidewall columns and endwall posts. The height of the fascia varies depending on actual requirements. Practical heights range between 1000 mm to 1600 mm.
Fascia sheeting is 0.5 mm (nominal) thick pre-painted panels matching the sidewall profile. Soffit panels and back-up panels are provided only when specified.
Curveline fascias are of the same type of construction as vertical fascias but are sheeted with curved profiled panels and are available in three types:
Bottom curved fascia that has a curved panel at the bottom of the fascia only. Top and bottom curved fascia
that has a curved panel at the top and bottom of the fascia.
Center curved fascia that has a single panel curved at the mid height of the fascia.
A parapet fascia is an extension of the sidewall and endwall above the roof line. The wall sheeting of the building will continue to the top of the parapet.
Standard eave gutters and downspouts are used in buildings with sidewall vertical fascias. Valley gutters are used in buildings having sidewall parapet fascias.