Product Overview

Summary: This Underfloor Heating Installation Safe Operating Procedure sets out a safe, consistent method for planning, installing, testing and commissioning underfloor heating systems in Australian workplaces and residential projects. It helps your team manage electrical, thermal and construction-related risks while delivering high-quality installations that comply with WHS duties and relevant Australian Standards.

Underfloor heating combines electrical, plumbing and flooring trades, often working in tight timeframes and shared workspaces. Without a structured procedure, it’s easy for critical safety steps to be missed—such as insulation checks, continuity tests, isolation procedures, or coordination with other trades—leading to electric shock risks, overheating, damage to floor finishes, and costly rework. This Underfloor Heating Installation SOP provides a clear, end‑to‑end framework for planning, installing and commissioning both electric and hydronic underfloor heating systems in a way that is safe, compliant and repeatable across all your projects.

Developed for Australian conditions and regulatory expectations, this SOP guides workers through pre‑start risk assessment, verification of electrical supply and controls, safe routing of cables and pipework, management of hot works and adhesives, and final testing and documentation. It supports PCBUs to demonstrate due diligence under WHS legislation by documenting how hazards such as electric shock, thermal burns, trip hazards, and damage to embedded services are identified and controlled. By standardising the process, businesses can reduce installation errors, protect workers and occupants, and maintain a consistent standard of workmanship that supports warranties and client confidence.

Key Benefits

• Ensure compliance with Australian WHS legislation and key electrical and plumbing standards during underfloor heating installations.
• Reduce the risk of electric shock, fire, and overheating through defined testing, isolation and verification steps.
• Standardise installation quality across teams and subcontractors, minimising defects, callbacks and warranty claims.
• Streamline coordination between electricians, plumbers, flooring installers and builders to prevent clashes and damage to heating elements.
• Provide clear documentation to support client handover, maintenance planning and regulatory inspections.

Who is this for?

• Licensed Electricians
• Plumbers and Hydronic Heating Installers
• Flooring Contractors
• Site Supervisors
• Construction Project Managers
• WHS Managers and Advisors
• Residential Builders
• Maintenance and Facilities Managers

Hazards Addressed

• Electric shock from live or incorrectly isolated circuits
• Electrical fires caused by damaged heating cables or incorrect installation
• Thermal burns from exposed or unshielded heating elements during testing or commissioning
• Damage to embedded services (electrical conduits, plumbing, gas lines) when fixing heating mats or pipework
• Slips, trips and falls on uneven subfloors, loose cables, tools and materials
• Manual handling injuries from lifting and positioning insulation boards, manifolds and control units
• Exposure to dust, adhesives, sealants and other hazardous chemicals used in floor preparation
• Heat stress for workers installing systems in confined or poorly ventilated areas
• Trip and impact hazards from temporary power leads and testing equipment
• Cut injuries from sharp tools, trims and fixing hardware

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and System Types (Electric vs Hydronic)
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Applicable Legislation, Standards and Codes of Practice
• 5.0 Pre‑Start Planning and Risk Assessment
• 6.0 Tools, Equipment and Materials Requirements
• 7.0 Personal Protective Equipment (PPE) Requirements
• 8.0 Site Preparation and Subfloor Inspection
• 9.0 Service Location and Protection of Existing Services
• 10.0 Installation Procedure – Electric Underfloor Heating
• 11.0 Installation Procedure – Hydronic Underfloor Heating
• 12.0 Electrical Isolation, Lock‑Out/Tag‑Out and Testing
• 13.0 Integration with Floor Finishes (Tiling, Timber, Carpet etc.)
• 14.0 Commissioning, Functional Testing and Temperature Calibration
• 15.0 Documentation, Labelling and Client Handover
• 16.0 Hazard Identification and Control Measures
• 17.0 Housekeeping and Waste Management
• 18.0 Emergency Procedures (Electric Shock, Fire, Injury)
• 19.0 Inspection, Maintenance and Periodic Re‑Testing
• 20.0 Training, Supervision and Review of this SOP

Legislation & References

• Work Health and Safety Act 2011 (Cth) and equivalent state and territory WHS Acts
• Work Health and Safety Regulations 2011 (Cth) and equivalent state and territory WHS Regulations
• AS/NZS 3000:2018 Electrical installations (Wiring Rules)
• AS/NZS 60335.2.96: Particular requirements for flexible sheet heating elements for room heating
• AS/NZS 3500 Plumbing and drainage series (for hydronic and associated plumbing connections)
• AS/NZS 4859.1: Materials for the thermal insulation of buildings
• Safe Work Australia – Code of Practice: Managing Electrical Risks in the Workplace
• Safe Work Australia – Code of Practice: Managing the Risk of Falls at Workplaces
• Safe Work Australia – Code of Practice: Hazardous Manual Tasks
• AS/NZS ISO 45001:2018 Occupational health and safety management systems – Requirements with guidance for use