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AS 3999:2015

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Bulk thermal insulation — Installation

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Sets out requirements on installing insulation in both new dwellings during construction and the retrofitting of insulation in existing buildings. This Standard is intended for residential-type construction; however, the methods may be appropriate to other forms of construction. Includes requirements for electrical safety and guidance on work health and safety.
Published: 23/07/2015
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Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope and general
1.1 Scope
1.2 Application
1.2.1 General
1.2.2 Relationship with regulations
1.3 Normative references
1.4 Definitions
1.5 Ancillary materials
1.5.1 General
1.5.2 Support materials
2 Pre-installation inspection and procedures
2.1 Scope of Section
2.2 General
2.3 Special features
2.4 Treatment required for special features
2.5 Condensation assessment
2.6 Electrical cables and electrical equipment
2.6.1 Electrical cables
2.6.1.1 General
2.6.1.2 Unsurrounded electrical cable
2.6.1.3 Partially surrounded electrical cable
2.6.1.4 Completely surrounded electrical cable
2.6.2 Insulation installation and electrical cables
2.6.2.1 General
2.6.2.2 Dwellings not wired in accordance with AS 3000—1986 or subsequent editions
2.6.2.3 Insulation installations and wiring systems in domestic installations in accordance with AS/NZS 3000:2018
2.6.3 Electrical accessories and equipment
2.7 Built-in appliances
2.8 Control membranes
3 General requirements for insulation installation
3.1 Scope of Section
3.2 Energy efficiency
3.2.1 General
3.2.2 Product description, application and purpose
3.2.3 Insulation selection
3.2.4 Continuity of insulation
3.3 Insulation installation guidance and rules
3.3.1 Insulation gaps, joints and thermal bypass
3.3.2 Thermal bridging
3.4 General insulation method
4 Safety requirements for insulation installation
4.1 Scope of Section
4.2 General safety requirements
4.3 Electrical safety
4.4 Safety requirements when working with insulation products
4.5 Safety requirements for concealed structural members (ceilings)
4.6 Polystyrene contact with electrical cables
5 Thermal envelope detailed installation methods
5.1 Scope of Section
5.2 Installation of roof insulation
5.2.1 Scope
5.2.2 General
5.2.2.1 Roof framing
5.2.2.2 Specific installation issues
5.2.3 Flat roofs
5.2.3.1 Metal clad roofs
5.2.3.2 Concrete roofs
5.2.4 Pitched roofs
5.2.4.1 Metal clad roofs with horizontal ceilings
5.2.4.2 Tiled roofs with horizontal ceilings
5.2.4.3 Sheeted roofs with sloped ceilings
5.2.4.4 Tiled roofs with sloped ceilings
5.3 Installation of ceiling insulation
5.3.1 Scope
5.3.2 General
5.3.2.1 Ceiling framing
5.3.2.2 Specific installation issues
5.3.3 Ceilings below flat roofs
5.3.3.1 Ceilings below metal clad roofs
5.3.3.2 Ceilings below concrete roofs
5.3.4 Horizontal ceilings below pitched roofs
5.3.4.1 General
5.3.4.2 Horizontal ceilings under pitched roofs
5.3.5 Sloped ceiling below pitched roofs
5.3.5.1 General
5.3.5.2 Sloped ceilings under pitched sheeted roofs
5.3.5.3 Sloped ceilings under pitched tiled roofs (Cathedral)
5.4 Installation of wall insulation
5.4.1 Scope
5.4.2 General
5.4.3 Metal and timber-framed walls
5.4.3.1 Insulation installed within the frame
5.4.3.2 Internally insulated
5.4.3.3 Externally insulated frame
5.4.3.4 Condensation
5.4.4 Cavity masonry insulation
5.4.5 Solid masonry, stone and concrete
5.4.6 Bulkheads
5.5 Installation of floor insulation
5.5.1 Scope
5.5.2 General
5.5.2.1 Suspended floors
5.5.2.2 Suspended concrete slabs
5.5.2.3 Concrete slab on ground
5.5.2.4 Floating floors
5.5.2.5 Termite management
5.5.3 Suspended floors
5.5.3.1 Metal and timber-framed floors
5.5.3.2 Suspended concrete floors
5.5.4 Concrete slab on ground
5.5.4.1 Insulation of stiffened raft slabs and footing slabs
5.5.4.2 Slab edge insulation
5.5.4.3 Insulation of stiffened slab with deep edge beams
5.5.4.4 Strip footing systems
5.5.5 Floor discontinuities
6 Installation statement
Appendix A
A1 Requirements
A2 Warning sign
A3 Precautions around recessed luminaires
A4 A4 Classification and marking of recessed luminaires
Appendix B
Appendix C
C1 Criterion
C2 Preparation and preconditioning
C3 Procedure
Appendix D
Appendix E
Appendix F
F1 General
F2 Perimeter edge batts or semi rigid board
F3 Loose fill with stepped restraints
F4 Loose fill with retaining board
Appendix G
G1 General
G2 Moisture issues
G3 Internal and external moisture
G4 Mechanisms of moisture movement
G4.1 General
G4.2 Surface moisture transfer
G4.3 Diffusion
G4.4 Air transfer
G5 Condensation risk assessments
Appendix H
H1 Truss types
H2 Supplementary noggins and strapping
Appendix I
Appendix J
J1 Scope
J2 General
J3 Moisture
J4 Ceiling retrofit details
J5 Roof retrofit details
J6 Wall retrofit details
J6.1 General
J6.2 Retrofitting timber-framed walls
J7 Floors
Appendix K
K1 General
K2 Electrical safety inspection and assessment
K3 For approved safety switch or permanent marking for electrical circuits
K4 Installation requirements for unprotected circuits
Amendment control sheet
Bibliography
Cited references in this standard
[Superseded]
Pliable building membranes and underlays, Part 1: Materials
[Current]
Waterproofing membranes for external above-ground use, Part 2: Design and installation
[Current]
Masonry in small buildings, Part 1: Design
[Current]
Masonry in small buildings, Part 2: Construction
[Current]
Methods for fire tests on building materials, components and structures, Part 3: Simultaneous determination of ignitability, flame propagation, heat release and smoke release
Content history
[Superseded]
DR AS 3999