Product Overview

Summary: This SOP provides a clear, step‑by‑step process for safely preparing masonry surfaces prior to coating, repair or refurbishment works. It helps Australian businesses control dust, noise, chemical and manual handling risks while achieving a consistent, high‑quality finish that supports long‑term durability and compliance with WHS obligations.

Surface preparation for masonry is a critical stage that directly affects the performance of coatings, renders, sealants and structural repair systems. Poorly prepared brick, block or concrete surfaces can lead to premature coating failure, moisture ingress, spalling, and costly rework. At the same time, common preparation activities such as grinding, scabbling, acid etching and high‑pressure cleaning introduce significant WHS risks including silica dust exposure, hazardous chemicals, noise, vibration and manual handling injuries.

This Safe Operating Procedure sets out a practical, WHS‑aligned method for planning and carrying out masonry surface preparation on Australian sites. It covers pre‑start inspections, identification of substrate condition, selection of appropriate preparation methods, control of dust and slurry, safe use of tools and equipment, and verification of surface readiness before work proceeds. By implementing this SOP, businesses can demonstrate due diligence, standardise work quality across teams and subcontractors, and provide workers with clear, easy‑to‑follow instructions that reduce incidents, rework and disputes with clients and principal contractors.

Key Benefits

• Ensure masonry surfaces are prepared to a consistent, specification‑compliant standard, improving coating adhesion and durability.
• Reduce worker exposure to respirable crystalline silica, hazardous chemicals and noise through clearly defined control measures.
• Minimise rework, defects and warranty claims by standardising inspection and surface acceptance criteria before follow‑on trades commence.
• Streamline onsite coordination between supervisors, trades and subcontractors with a clear, documented sequence of preparation tasks.
• Demonstrate compliance with Australian WHS legislation and relevant Codes of Practice, supporting audits, tenders and client requirements.

Who is this for?

• Site Supervisors
• Construction Project Managers
• Bricklayers and Blocklayers
• Concrete Repair Technicians
• Painters and Decorators
• Rendering and Plastering Trades
• Facilities and Maintenance Managers
• WHS Advisors and Safety Officers
• Small Construction Business Owners

Hazards Addressed

• Exposure to respirable crystalline silica from cutting, grinding or scabbling masonry surfaces
• Inhalation or skin/eye contact with acids, alkalis, detergents and other surface treatment chemicals
• High‑pressure water jet injuries and contact with contaminated slurry
• Noise‑induced hearing loss from powered tools and machinery
• Hand‑arm vibration from prolonged use of grinders, scabblers and breakers
• Manual handling strains and sprains when moving tools, materials and waste
• Slips, trips and falls on wet, uneven or debris‑covered work areas
• Flying particles and projectiles from impact tools and grinding operations
• Electrical risks when using powered equipment in wet environments
• Environmental contamination from uncontrolled wash‑water, slurry and debris

Included Sections

• 1.0 Purpose and Scope
• 2.0 References, Definitions and Abbreviations
• 3.0 Roles and Responsibilities
• 4.0 Required Competencies and Training
• 5.0 Tools, Equipment and Materials
• 6.0 Personal Protective Equipment (PPE) Requirements
• 7.0 Pre‑Start Planning and Site Assessment
• 8.0 Masonry Substrate Inspection and Documentation
• 9.0 Selection of Surface Preparation Method (mechanical, chemical, water‑based, manual)
• 10.0 Hazard Identification and Risk Controls (Silica, Chemicals, Noise, Vibration, Manual Tasks)
• 11.0 Step‑by‑Step Surface Preparation Procedure
• 12.0 Dust, Slurry and Waste Management Procedures
• 13.0 Working at Heights and Access Considerations (if applicable)
• 14.0 Environmental Protection and Run‑off Control
• 15.0 Quality Criteria and Surface Acceptance Checks
• 16.0 Emergency Procedures and Incident Response
• 17.0 Post‑Task Clean‑up and Equipment Maintenance
• 18.0 Recordkeeping, Sign‑off and Continuous Improvement

Legislation & References

• Model Work Health and Safety Act 2011 (Cth)
• Model Work Health and Safety Regulations 2011 (Cth)
• Safe Work Australia – Managing the Risk of Respirable Crystalline Silica from Engineered Stone in the Workplace: Code of Practice (principles applied to masonry work)
• Safe Work Australia – Managing Risks of Hazardous Chemicals in the Workplace: Code of Practice
• Safe Work Australia – Managing Noise and Preventing Hearing Loss at Work: Code of Practice
• Safe Work Australia – Hazardous Manual Tasks: Code of Practice
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 1716: Respiratory protective devices
• AS/NZS 2161 series: Occupational protective gloves
• AS/NZS 1270: Acoustics – Hearing protectors
• AS/NZS 1337.1: Personal eye protection
• AS/NZS 4501.2: Occupational protective clothing
• AS/NZS 3000: Electrical installations (Wiring Rules) – for safe use of electrical equipment on site