AS 3740 is an Australian Building Standard which defines the scope of waterproofing and identifies the areas that require waterproofing in buildings. These areas include roofs, balconies, external walls, wet areas such as bathrooms, and planter boxes. The document provides detailed information on the materials and methods used for waterproofing these areas, including surface preparation, membrane selection, and application methods.
AS 3740 is regularly updated, with the most current version being released in 2021. It outlines the requirements for design and installation of waterproofing systems, including drainage systems and penetrations. It emphasizes the need for appropriate design and installation to prevent water ingress and the potential for damage and deterioration of the building structure.
Additionally, AS 3740 provides guidance on the maintenance and repair of waterproofing systems. It stresses the importance of regular inspections and maintenance to ensure the continued effectiveness of the waterproofing system, and outlines the recommended procedures for repair and replacement of damaged or deteriorated components.
AS 3740 also includes information on the roles and responsibilities of building practitioners involved in waterproofing, including architects, engineers, builders, and waterproofing contractors. It highlights the importance of ensuring that all parties involved in the building process have a clear understanding of their responsibilities and obligations with respect to waterproofing.
In summary, the AS3740-2021 standard provides comprehensive guidance on waterproofing in buildings, covering areas such as design, installation, maintenance, and repair of waterproofing systems. It emphasizes the importance of appropriate design and installation to prevent water ingress and the potential for damage and deterioration of the building structure, and outlines the roles and responsibilities of building practitioners involved in waterproofing.