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An overview of AS 4200.2:2017 which sets out requirements for the installation of pliable building membranes (also known as ‘sarking’ or ‘underlay’), when used either independently or as a facing to other materials.
Wednesday, 20th November 2024
AS 4200.2:2017 sets out requirements for the installation of pliable building membranes (also known as ‘sarking’ or ‘underlay’), when used either independently or as a facing to other materials, such as insulation materials, for either water control, thermal control, vapour control or air control purposes.
What's included
AS 4200.2:2017 is broken into four sections:
- Section 1: Deals with what the standard covers, and the terms used in the standard, details on which standards are referenced within this document, guidance on terms and definitions and electrical safety warnings.
- Section 2: Deals with vapour control membranes, air control membranes (air barriers), water control membranes, thermal control membranes and allowable use based on duty classifications.
- Section 3: Details with framed floors, full masonry floors and common requirements for roofs including metal sheet roofing, tiled roofing, solid masonry roofing and ceilings. It also deals with common requirements for walls including framed walls, cavity masonry walls and solid masonry/concrete walls.
- Section 4: Details with thermal control, vapour control, air control, water control, hot flues, recessed luminaries, windows, roof windows, skylights and doors.
The Standard also contains three informative appendices:
- Appendix A provides safety guidance for pliable building membrane installation.
- Appendix B details durability.
- Appendix C outlines protection against condensation.
The Standard is referenced in both NCC Volumes One and Two providing Deemed-to-Satisfy requirements for selection and installation of for the installation of pliable building membranes.
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Who is it for?
Building Professionals
The primary users of this standard are:
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