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Waterproofing Risk Assessment

Waterproofing Risk Assessment

  • • 100% Compliant with Australian WHS Acts & Regulations
  • • Fully Editable MS Word & PDF Formats Included
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  • • Includes 2 Years of Free Compliance Updates

Waterproofing Risk Assessment

Product Overview

Identify and control organisational risks associated with Waterproofing activities using this management-level Waterproofing Risk Assessment, focused on planning, governance, procurement, and systems control rather than task-by-task work instructions. This document supports executive Due Diligence, aligns with WHS legislation, and helps protect your business from compliance breaches and operational liability arising from defective or unsafe waterproofing works.

Risk Categories & Hazards Covered

This document assesses risks and outlines management controls for:

  • WHS Governance & Consultation: Assessment of safety leadership, allocation of WHS roles, consultation with workers and contractors, and integration of waterproofing risks into the broader safety management system.
  • Design, Specification & Procurement: Management of risks associated with selecting waterproofing systems, design documentation, compatibility with substrates and adjoining trades, and procurement of compliant products and materials.
  • Contractor Selection & Competency: Evaluation of pre-qualification processes, licences, training, supervision, and competency verification for contractors undertaking waterproofing works.
  • Hazardous Chemicals & Materials Management: Controls for storage, handling, labelling and use of resins, primers, membranes, solvents and other hazardous substances used in waterproofing systems, including SDS and exposure minimisation.
  • Planning of Interfaces & Work Sequencing: Assessment of coordination with other trades, construction staging, curing times, traffic management over waterproofed areas, and prevention of damage or compromise to installed systems.
  • Work at Height, Access & Egress: Management of fall risks, roof access systems, edge protection, safe access routes, and emergency egress for elevated waterproofing works.
  • Water Ingress & Building Health: Evaluation of risks associated with leaks, moisture ingress, mould growth, structural deterioration, and impacts on occupant health and building performance.
  • Quality Assurance, Inspection & Testing: Protocols for inspection hold points, adhesion and flood testing, documentation of installation records, and verification that works comply with design and manufacturer requirements.
  • Emergency Preparedness & Incident Response: Planning for spills, fire, chemical exposure, medical emergencies and severe weather events affecting waterproofing activities or materials.
  • Ongoing Maintenance & Lifecycle Management: Assessment of long-term maintenance strategies, inspection schedules, asset registers, and handover documentation to ensure the ongoing performance of waterproofing systems.
  • Documentation & Record Keeping: Management of policies, procedures, risk registers, training records, inspection reports and contractor documentation to demonstrate organisational compliance.
  • Environmental & Waste Management: Controls for disposal of surplus product, contaminated materials, wash water and packaging, and prevention of environmental contamination from waterproofing activities.

Who is this for?

This Risk Assessment is designed for Business Owners, Construction Managers, Project Managers, Facility Managers and Safety Officers responsible for planning, procuring and overseeing Waterproofing works across new builds, refurbishments and maintenance projects.

Hazards & Risks Covered

Hazard Risk Description
1. WHS Governance, Roles and Consultation for Waterproofing Activities
  • • Lack of a documented WHS management framework for waterproofing activities leading to inconsistent risk controls across projects
  • • Unclear allocation of WHS responsibilities between PCBU, principal contractor, waterproofing subcontractor, supervisors and workers
  • • Insufficient consultation with workers and Health and Safety Representatives (HSRs) on specific waterproofing hazards (e.g. torch-on membrane, solvent use, work at height, confined floor spaces)
  • • Failure to integrate waterproofing-specific risks into the overall construction Project WHS Management Plan
  • • Inadequate processes for reporting, investigating and learning from waterproofing-related incidents, near misses and defects (e.g. water ingress, membrane failures, chemical exposure)
  • • No formal review of WHS performance of waterproofing subcontractors, leading to repeated systemic issues
2. Design, Specification and Procurement of Waterproofing Systems
  • • Inadequate or ambiguous design documentation for waterproofing leading to inappropriate selection of systems, substrates and materials
  • • Failure to consider compatibility between waterproofing products and different substrates when creating isolation barriers (e.g. between concrete, masonry, metal, timber and existing membranes)
  • • Under-specification or omission of vapour barriers, sealing layers or elastomeric systems in design for roofs, wet areas and lower wall portions
  • • Selection of products that do not meet Australian Standards, manufacturer’s requirements or NCC/BCA performance provisions for waterproofing
  • • Procurement of cheaper, untested or counterfeit materials (membranes, sealants, primers, elastomerics, vapour barriers) that degrade prematurely or emit higher levels of hazardous vapours
  • • Lack of design coordination between architectural, structural and services disciplines resulting in unplanned penetrations and junctions that compromise waterproofing and increase rework risk
  • • No systematic design assessment of penetrations, joints, interfaces at walls and floors, high surfaces and parapets for water ingress pathways
  • • Inadequate specification of torch-on membrane systems (e.g. base sheet, cap sheet, fire protection measures, substrate preparation requirements)
3. Contractor Selection, Competency and Training for Waterproofing Works
  • • Engagement of waterproofing contractors without verification of competency, licensing and experience with specified systems (e.g. torch-on, large scale elastomeric, vapour barriers, wet area waterproofing)
  • • Insufficient training of workers in safe handling of waterproofing chemicals (solvents, primers, adhesives, curing agents, penetrating damp treatments)
  • • Lack of competency in installation practices that ensure long-term water tightness (e.g. correct laps, sealing at joins adjacent to walls, detailing high surfaces, floor-to-wall junctions)
  • • Inadequate training in fire risk and emergency response for torch-on membrane systems and heat-based curing systems
  • • Supervisors not adequately trained in identifying systemic waterproofing quality issues that may translate into WHS risks (e.g. mould growth, structural damage from water ingress)
  • • No formal induction on project-specific waterproofing hazards such as working on high roofs, slippery surfaces, confined floor areas or restricted access wet areas
4. Hazardous Chemicals and Materials Management for Waterproofing Systems
  • • Use of hazardous waterproofing chemicals (solvent-based primers, adhesives, sealants, elastomeric coatings, penetrating damp treatments) without a structured management system
  • • Incomplete or outdated Safety Data Sheets (SDS) for products used in sealing, gluing rubber seals, silicon application and membrane installation
  • • Inappropriate storage, labelling or segregation of flammable and corrosive chemicals used in waterproofing, increasing risk of fire, explosion or harmful reactions
  • • Lack of formal risk assessments and safe systems of work for handling, mixing and disposing of waterproofing chemicals
  • • Inadequate ventilation plans when applying products in wet areas, enclosed roof spaces or areas with limited airflow leading to inhalation exposure
  • • No consistent process for PPE selection, issue and enforcement across different waterproofing chemical products
  • • Inappropriate or environmentally unsafe disposal of waste chemicals, containers and contaminated materials leading to regulatory non-compliance and environmental incidents
5. Planning and Coordination of Waterproofing Interfaces and Sequencing
  • • Poor coordination of trades leading to damage or compromise of installed waterproofing membranes, seals and vapour barriers
  • • Inadequate planning for penetrations and fixings after waterproofing is installed, requiring ad hoc cutting and patching with increased leak risk
  • • Lack of a system for protecting finished waterproofing (e.g. floor membranes, roof membranes, isolation barriers) from subsequent construction activities and weather
  • • Insufficient planning for weather exposure during critical stages such as implementing sealing layers, laying waterproofing membranes or applying elastomeric coatings
  • • No systematic approach to managing interfaces at walls, joins, high surfaces, parapets and floor-to-wall junctions, resulting in inconsistent detailing and water ingress paths
  • • Failure to sequence wet area works with sufficient curing times, inspection windows and testing before covering membranes with finishes
  • • Uncontrolled variation or product substitutions impacting the compatibility and integrity of the overall waterproofing system
6. Work at Height, Access and Egress for Roof and Elevated Waterproofing
  • • Inadequate systems for managing work at height risks during waterproofing for commercial construction on roofs and other high surfaces
  • • Poorly planned access and egress routes for transporting waterproofing materials, membranes and equipment to elevated work areas
  • • Absence of engineered fall protection systems (edge protection, guardrails, anchor points) integrated with the roof waterproofing design and installation
  • • Use of temporary access equipment (ladders, scaffolds, EWP) without consistent inspection, tagging or competence verification processes
  • • Slips and trips on wet, partially waterproofed or uneven surfaces, particularly where water ingress or ponding occurs during works
  • • Insufficient control over weather conditions (wind, rain, heat) affecting safety of workers on exposed roofs during application of torch-on membranes, elastomerics and sealing layers
7. Water Ingress, Moisture Management and Building Health
  • • Systemic failure to manage water ingress during and after construction leading to structural damage, mould growth and unhealthy work environments
  • • Lack of monitoring and verification processes to confirm performance of isolation barriers, vapour barriers, sealing layers and membranes
  • • Inadequate planning for temporary water management during construction (e.g. unsealed roof penetrations, incomplete parapet detailing, open joints adjacent to walls)
  • • Failure to integrate penetrating damp treatments and weatherproofing strategies into an overall moisture management plan, resulting in trapped moisture or condensation
  • • No clear process to respond to, investigate and rectify leaks identified during the construction phase or defect liability period
  • • Incomplete documentation of as-built waterproofing systems, complicating future maintenance and increasing the risk of uncoordinated penetrations and modifications
8. Quality Assurance, Inspection and Testing of Waterproofing Works
  • • Absence of a structured quality assurance (QA) system for waterproofing leading to inconsistent installation and undetected defects
  • • Insufficient inspection hold points for critical stages such as substrate preparation, isolation barrier installation, vapour barrier placement, membrane laps and sealing of joints
  • • Reliance on visual checks only without functional testing of wet area waterproofing or roofs where appropriate and practicable
  • • Poor documentation of inspections, test results and non-conformances, limiting traceability and continuous improvement
  • • Inadequate supervision ratios for complex waterproofing works such as large scale elastomeric layers, torch-on membrane systems and multi-layer roofing assemblies
  • • Lack of integration between QA findings and WHS management, resulting in missed opportunities to address systemic risks
9. Emergency Preparedness, Incident Response and Fire Safety
  • • Lack of emergency planning specific to torch-on membrane systems and other hot work associated with waterproofing
  • • Inadequate preparedness for chemical spills, fumes or acute exposures related to waterproofing products in wet areas, roofs and confined zones
  • • No clear process for responding to sudden water ingress events during construction (e.g. storm damage to partially waterproofed roofs, failed temporary seals)
  • • Poor communication and training on emergency procedures for subcontractors and short-term workers involved in waterproofing activities
  • • Insufficient emergency equipment (spill kits, fire extinguishers, respiratory protection) at or near waterproofing work fronts
  • • Failure to investigate and learn from waterproofing-related emergencies, leading to repeated incidents
10. Ongoing Maintenance, Handover and Lifecycle Management of Waterproofing
  • • Insufficient information provided to building owners and facility managers on the maintenance needs and limitations of installed waterproofing systems
  • • Lack of documented procedures for safe inspection and maintenance of roofs, high surfaces, wet areas and lower wall portions, leading to ad hoc and unsafe practices
  • • Uncontrolled penetrations, fixings or repairs carried out post-handover that compromise waterproofing and introduce water ingress risks
  • • Failure to conduct routine inspections of high-risk areas (roofs, balconies, wet areas) resulting in gradual deterioration, leaks and building health issues
  • • No systematic process for recording and assessing recurring leaks or damp issues over the building life, limiting the ability to address root causes
  • • Use of incompatible repair materials during lifecycle works that react adversely with existing membranes, isolation layers or vapour barriers

Need to add specific hazards for your workplace?

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Legislation & References

This document was researched and developed to align with:

  • Work Health and Safety Act 2011
  • Work Health and Safety Regulations 2017
  • AS/NZS ISO 31000:2018: Risk management — Guidelines
  • Safe Work Australia – Managing Risks of Hazardous Chemicals in the Workplace Code of Practice: Guidance on storage, handling and risk control for chemical products used in waterproofing.
  • Safe Work Australia – Managing the Risk of Falls in Housing Construction Code of Practice: Requirements for managing work at height associated with roof and balcony waterproofing.
  • Safe Work Australia – How to Manage Work Health and Safety Risks Code of Practice: Framework for identifying, assessing and controlling WHS risks in waterproofing activities.
  • Safe Work Australia – Managing the Work Environment and Facilities Code of Practice: Guidance on safe access, egress, amenities and environmental conditions for waterproofing works.
  • AS 3740: Waterproofing of domestic wet areas – Requirements for design and installation of internal waterproofing systems.
  • AS 4654.1 & AS 4654.2: Waterproofing membranes for external above-ground use – Materials, design and installation requirements.
  • AS 1884: Floor coverings – Resilient sheet and tiles – Installation, including substrate moisture considerations relevant to waterproofing.
  • AS/NZS 4801 / ISO 45001: Occupational health and safety management systems – Principles for integrating waterproofing risks into organisational WHS management.
Standard Risk Assessment Features (Click to Expand)
  • Comprehensive hazard identification for all activities
  • Risk rating matrix with likelihood and consequence analysis
  • Existing control measures evaluation
  • Residual risk assessment after controls
  • Hierarchy of controls recommendations
  • Action priority rankings
  • Review and monitoring requirements
  • Consultation and communication records
  • Legal compliance references
  • Sign-off and approval sections

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Safe Work Australia Aligned