Pool Painting & Coating SWMS

Pool painting and coating involves preparing concrete or rendered pool shells and applying epoxy, chlorinated rubber, or two-pack polyurethane coating systems inside an empty pool basin. The work environment combines confined space characteristics (restricted access, accumulation of solvent vapours, limited natural ventilation), elevated solvent and isocyanate exposure, abrasive blasting or acid etching during surface preparation, and ladder/scaffold access into and out of the shell. Under WHS Regulation 2011 r291 and the harmonised 2025 framework, this work meets multiple High Risk Construction Work (HRCW) triggers including work in a confined space, work involving hazardous chemicals, and work performed from a ladder or temporary platform at height. A Safe Work Method Statement is mandatory before any worker enters the pool shell, must be prepared in consultation with workers under s47, signed on by every person performing the task, and kept available for the duration of the work and for two years following any notifiable incident.

Hazards identified

8 hazards covered, sorted by priority.

Control measures

Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.

1. 1Elimination — Where feasible, specify factory-cured fibreglass or pre-coated pool liner systems removing on-site solvent coating application and confined space entry entirely from the scope.
2. 2Elimination — Drain, dry and fully ventilate pool shell for a minimum 24 hours before entry to eliminate residual chlorine and hydrogen sulphide accumulation.
3. 3Substitution — Substitute high-VOC solvent epoxies with low-VOC waterborne epoxy or chlorinated rubber alternatives compliant with AS/NZS 4548 to reduce solvent vapour load.
4. 4Substitution — Replace open-nozzle dry abrasive blasting with wet-head vacuum blasting or diamond grinding with on-tool HEPA extraction to suppress respirable silica.
5. 5Engineering — Install forced mechanical ventilation delivering minimum 20 air changes per hour with intrinsically safe extraction fan positioned at deep-end floor level per AS 2865 confined space requirements.
6. 6Engineering — Continuous atmospheric monitoring with calibrated 4-gas detector (O2, LEL, CO, H2S) and dedicated solvent vapour PID monitor with audible alarms at 10% LEL.
7. 7Administrative — Issue confined space entry permit per AS 2865 with nominated standby person, communications, rescue plan and retrieval equipment in place before any entry.
8. 8Administrative — Rotate applicators on 45-minute maximum work cycles with documented stand-down and conduct health monitoring per WHS Reg Schedule 14 for isocyanate workers.
9. 9PPE — Supplied-air respirator (continuous-flow airline, AS/NZS 1716) for all coating application; half-face P2/A2 only permitted during dry surface prep with monitoring confirming exposure below WES.
10. 10PPE — Chemical-resistant nitrile gauntlets, AS/NZS 2210.3 anti-slip safety footwear, AS/NZS 1337 sealed goggles, Type 5/6 coverall, and antistatic clothing where flammable solvents are decanted.

Applicable Codes of Practice

High-Risk Construction Work triggered

Worked example

On a 25m commercial hotel pool resurfacing project, the leading hand opens the pre-start toolbox at 6:30am with three applicators and a confined space standby attendant present. Using this SWMS as the structured agenda, the leading hand walks through each hazard line — starting with solvent vapour accumulation — and confirms the forced ventilation fan has been positioned at the deep end, the 4-gas monitor is calibrated and reading 20.9% O2 and 0% LEL, and that the PID is bumped against an isobutylene standard. The team reviews the SDS for the chlorinated rubber primer being applied that morning, confirms airline compressor breathing-air certification is current, and each applicator signs on against the document acknowledging they have been fit-tested for the supplied-air half-mask. The confined space entry permit is filled out, attached to the SWMS, and the standby attendant takes position at the shallow-end ladder with the rescue tripod rigged. Mid-morning, ambient temperature rises and the PID alarms at 12% LEL near the deep-end wall; the leading hand halts work as per the documented trigger, escalates ventilation to a secondary fan, and amends the SWMS on-site in the changes log before reauthorising entry. All workers initial the amendment before resuming, demonstrating the document functioning as a live field control rather than a filed compliance artefact.

Related legislation

• WHS Act 2011 (model)
• WHS Regulation 2025
• Hazardous Manual Tasks CoP; Managing Risks of Hazardous Chemicals CoP

Frequently asked questions