Product Overview

Summary: This Weatherproofing Masonry Structures Safe Operating Procedure sets out a clear, step‑by‑step method for safely preparing, treating and sealing masonry in Australian conditions. It helps construction and maintenance teams protect buildings from water ingress while controlling WHS risks such as work at height, chemical exposure and manual handling.

Masonry structures in Australia are exposed to intense UV, driving rain, coastal conditions and significant temperature fluctuations, all of which can rapidly accelerate deterioration if weatherproofing is not done correctly. This SOP provides a structured, repeatable process for assessing masonry substrates, selecting compatible weatherproofing systems, and applying them safely and effectively. It addresses common Australian building scenarios, including cavity brickwork, concrete block walls, retaining walls and parapets, with a focus on long‑term performance and compliance with WHS obligations.

Beyond product selection and application technique, the procedure focuses on the real‑world risks involved in weatherproofing work: working at height on scaffolds and EWPs, handling and applying chemical sealers and membranes, managing silica dust during surface preparation, and controlling environmental impacts such as runoff and overspray. By implementing this SOP, organisations can reduce defects, leaks and callbacks, while demonstrating due diligence under Australian WHS law and relevant building and waterproofing standards. It becomes a practical tool for training workers, coordinating subcontractors and evidencing a systematic approach to both quality and safety on site.

Key Benefits

• Ensure consistent, high‑quality weatherproofing of masonry structures that extends building service life.
• Reduce safety risks associated with working at height, chemical exposure and manual handling during weatherproofing tasks.
• Minimise costly water ingress, structural damage, mould growth and tenant complaints through a preventative approach.
• Standardise training and supervision so that employees and subcontractors follow the same, compliant method every time.
• Demonstrate compliance with Australian WHS legislation, waterproofing standards and client specifications.

Who is this for?

• Site Supervisors
• Construction Project Managers
• Bricklayers and Blocklayers
• Waterproofing Technicians
• Maintenance Managers
• Facilities Managers
• WHS Advisors and Safety Officers
• Building Inspectors
• Strata and Property Managers

Hazards Addressed

• Falls from height when working on scaffolds, ladders, roofs and elevated work platforms
• Chemical exposure from sealers, primers, membranes, solvents and cleaning agents
• Inhalation of dust, including silica, during grinding, cutting or surface preparation of masonry
• Skin and eye irritation or burns from alkaline or solvent‑based products
• Manual handling injuries from handling heavy pails, rolls, equipment and access gear
• Slip and trip hazards from wet surfaces, hoses, leads and overspray
• Noise exposure from mechanical surface preparation equipment
• Environmental contamination from uncontrolled wash‑water, chemical spills or overspray
• Contact with live services (electrical, plumbing) embedded in or behind masonry walls

Included Sections

• 1.0 Purpose and Scope
• 2.0 References, Standards and Definitions
• 3.0 Roles and Responsibilities
• 4.0 Required Licences, 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 Hazard Identification and Risk Controls (WHS)
• 9.0 Access, Scaffolding and Work at Height Controls
• 10.0 Masonry Inspection and Substrate Assessment
• 11.0 Surface Preparation Procedures
• 12.0 Selection of Weatherproofing Systems and Compatibility Checks
• 13.0 Application of Sealers, Membranes and Coatings – Step‑by‑Step
• 14.0 Curing, Protection and Quality Control Checks
• 15.0 Management of Hazardous Chemicals and SDS Requirements
• 16.0 Environmental Controls (Runoff, Overspray and Waste Management)
• 17.0 Emergency Procedures and Incident Response
• 18.0 Post‑Completion Inspection, Testing and Sign‑Off
• 19.0 Documentation, Records and Continuous Improvement

Legislation & References

• Model Work Health and Safety Act and Regulations (as implemented in each State and Territory)
• Safe Work Australia – Code of Practice: Construction Work
• Safe Work Australia – Code of Practice: Managing the Risk of Falls at Workplaces
• Safe Work Australia – Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace
• AS 4654.2: Waterproofing membranes for external above‑ground use – Design and installation
• AS 3700: Masonry structures
• AS/NZS 1891 series: Industrial fall‑arrest systems and devices
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 2161 series: Occupational protective gloves
• AS/NZS 4576: Guidelines for scaffolding
• National Construction Code (NCC) – Performance requirements for weatherproofing of external walls