In Queensland, roof construction standards and codes are governed by the Queensland Development Code (QDC) and the National Construction Code (NCC). The QDC consolidates Queensland’s building codes into one location, covering mandatory and non-mandatory parts [3]. The NCC is a performance-based code that sets minimum requirements for the design, construction, and performance of buildings in Australia [5].
One specific aspect of roof construction standards refers to the attachment of asphalt strip shingles. According to the International Residential Code, asphalt strip shingles should have a minimum of six fasteners per shingle [8]. For more detailed and specific information on roof construction standards and codes in Queensland, refer to the Queensland Development Code [3] and the National Construction Code [5].
National Roofing Construction Code
In addition to the Queensland Development Code (QDC) and the National Construction Code (NCC), other codes and regulations that may impact roof construction standards in Queensland include the Australian Standards, such as AS/NZS 1170.2:2021, which covers structural design actions and wind actions [17]. This standard provides guidance on wind resistance and climate change multipliers for different wind regions, accounting for potential changes in climate affecting extreme winds over a building’s design life.
Managing Water Flow
Another aspect to consider in roof construction is the management of water flow. The NCC provides information on gutter, downpipe, and overflow requirements for housing, ensuring proper water drainage and avoiding potential damage [11]. The Australian Building Codes Board (ABCB) also offers an online calculator to help determine the appropriate gutter types, downpipe sizes, and overflow measures based on location, roof design, and other factors [13].
In summary, roof construction standards and codes in Queensland are governed by a combination of the Queensland Development Code, National Construction Code, and Australian Standards. These codes and regulations ensure that roofs are built to withstand local climate conditions, provide proper drainage, and meet minimum safety requirements. For further information on these codes and their specific provisions, refer to the relevant documents and resources [3, 5, 17, 11].