Product Overview

Summary: This SOP sets out a clear, WHS-aligned process for planning, mixing, applying and curing acoustic plaster systems in Australian workplaces. It helps your team deliver high‑performance acoustic finishes safely, consistently and in line with manufacturer specifications and regulatory requirements.

Acoustic plaster systems are increasingly specified in Australian commercial, education, health and hospitality projects to control reverberation and improve occupant comfort. However, these specialist systems often involve fine particulates, proprietary binders, overhead work and multi-stage application processes that can introduce significant safety, quality and coordination risks if not managed correctly. This Acoustic Plaster Solutions Safe Operating Procedure provides a structured, step‑by‑step method for safely preparing substrates, handling materials, mixing, spraying or trowel application, curing and finishing acoustic plaster systems on site.

Developed for the Australian regulatory environment, the SOP helps businesses integrate acoustic plaster works into their broader WHS management system and construction methodologies. It clarifies roles and responsibilities between builders, subcontractors and designers, embeds risk controls for dust, manual handling and work at height, and standardises how acoustic performance and finish quality are verified. By implementing this SOP, organisations can reduce rework, protect workers’ health, safeguard design intent, and demonstrate due diligence to clients, certifiers and regulators across a wide range of fit‑out and refurbishment projects.

Key Benefits

• Ensure safe planning, handling and application of acoustic plaster systems in line with Australian WHS obligations.
• Reduce defects, rework and acoustic performance failures through a consistent, documented installation process.
• Standardise training for applicators and supervisors, improving workmanship and on‑site coordination.
• Minimise worker exposure to airborne dusts, wet materials and repetitive overhead tasks.
• Support compliance documentation for principal contractors, certifiers and client handover requirements.

Who is this for?

• Site Supervisors
• Construction Project Managers
• Interior Fit-out Contractors
• Acoustic Plaster Applicators
• Ceiling and Wall Lining Installers
• WHS Managers and Advisors
• Architects and Acoustic Consultants
• Building Maintenance Managers

Hazards Addressed

• Inhalation of fine dusts from acoustic plaster products and substrate preparation
• Skin and eye contact with wet plaster mixes, primers and bonding agents
• Manual handling injuries from lifting and moving bags, buckets, scaffolds and spraying equipment
• Falls from height when working on scaffolds, elevated work platforms or ladders
• Slips, trips and falls due to wet, uneven or obstructed work areas
• Noise exposure from mixing, spraying and associated construction activities
• Ergonomic strain from repetitive overhead application and awkward postures
• Electrical hazards from powered mixers, spray pumps and extension leads in wet environments
• Air quality and ventilation issues in enclosed spaces during spraying and curing

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Terminology (Acoustic Plaster Systems)
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and Manufacturer Specifications
• 5.0 Pre-Start Planning and Risk Assessment (SWMS/JSA Integration)
• 6.0 Site and Substrate Preparation Requirements
• 7.0 Plant, Tools, Materials and Personal Protective Equipment (PPE)
• 8.0 Material Handling, Storage and Mixing Procedures
• 9.0 Application Methods (Spray and Trowel) – Step-by-Step Process
• 10.0 Work at Height Controls for Ceilings and High Walls
• 11.0 Ventilation, Dust Control and Housekeeping Measures
• 12.0 Quality Assurance, Acoustic Performance and Finish Inspection
• 13.0 Curing, Protection of Finished Surfaces and Defect Management
• 14.0 Waste Management, Environmental Considerations and Cleanup
• 15.0 Emergency Procedures, First Aid and Incident Reporting
• 16.0 Training, Induction and Competency Verification
• 17.0 Document Control, Review and Continuous Improvement

Legislation & References

• Work Health and Safety Act 2011 (Cth) and corresponding state and territory WHS legislation
• Work Health and Safety Regulations 2011 (Cth) and state/territory equivalents
• Safe Work Australia – Code of Practice: Managing the Work Environment and Facilities
• Safe Work Australia – Code of Practice: Managing Risks of Falls at Workplaces
• Safe Work Australia – Code of Practice: Hazardous Manual Tasks
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 1716: Respiratory protective devices
• AS/NZS 1891 series: Industrial fall-arrest systems and devices
• AS/NZS 3012: Electrical installations – Construction and demolition sites
• AS/NZS ISO 45001: Occupational health and safety management systems
• NCC (National Construction Code) – Acoustic performance and internal environment provisions (as applicable to project design intent)