Carpet & Upholstery Cleaning SWMS

Carpet and upholstery cleaning across domestic and commercial premises combines hazardous chemical application, hot water extraction under pressure, manual handling of heavy portable extractors or truck-mount hoses, and the creation of wet, slippery surfaces during the drying phase. Pre-sprays containing alkaline builders, solvents, enzymes and quaternary ammonium compounds present inhalation, dermal and splash risks under WHS Regulation 2025 Chapter 7 (Hazardous Chemicals). Truck-mount systems generate carbon monoxide exhaust, high-temperature solution lines (above 90°C) and high-pressure hose connections that can fail catastrophically. A Safe Work Method Statement is mandatory under WHS Regulation 2025 because the work involves use of hazardous chemicals listed under High Risk Construction Work under section 291 criteria, and the PCBU must document hazard identification, risk assessment, control selection per the hierarchy of control, and worker consultation before commencement. The SWMS must be available at the workplace, reviewed when conditions change, and retained for the duration of the work plus two years (or longer if a notifiable incident occurs).

Hazards identified

7 hazards covered, sorted by priority.

Control measures

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

1. 1Elimination — Eliminate use of solvent-based spotters containing perchloroethylene or butyl cellosolve by specifying water-based alternatives during chemical procurement and SDS review
2. 2Elimination — Position truck-mount exhaust stacks to discharge into open air at least 6 metres from any building air intake, window or doorway
3. 3Substitution — Substitute high-pH alkaline pre-sprays (pH >11) with neutral or low-alkaline enzymatic products where soiling permits, reducing dermal and inhalation severity
4. 4Substitution — Replace petrol-fuelled portable units with electric or battery extraction equipment for indoor and basement work to remove CO exposure entirely
5. 5Engineering — Install in-line CO monitors with audible alarm at 30 ppm inside the cleaning zone and continuous exhaust monitoring at the truck-mount per AS/NZS 1715
6. 6Engineering — Use HEPA-filtered low-pressure pre-spray applicators and pressure-rated hoses tested to AS 2554 with whip-check restraints on every coupling
7. 7Administrative — Conduct pre-start SWMS sign-on identifying CO sources, slip zones and chemical inventory; review SDS for every product per WHS Reg 2025 Chapter 7 Part 7.1
8. 8Administrative — Erect compliant wet floor signage (AS 1319) at all access points, restrict public access until moisture meter reads below 16%, and log drying times
9. 9PPE — Wear nitrile chemical-resistant gloves (AS/NZS 2161.10), splash goggles (AS/NZS 1337.1) and P2 respirator (AS/NZS 1716) during decanting and pre-spray application
10. 10PPE — Use slip-resistant footwear rated SRC under AS/NZS 2210.3 and high-visibility vest where working in commercial loading zones or near vehicular movement

Applicable Codes of Practice

Worked example

A two-person crew arrives at a suburban medical centre for an after-hours carpet clean using a truck-mounted hot water extraction unit. Before unloading, the lead technician opens the SWMS on a tablet at the rear of the vehicle and runs the pre-start brief with the offsider. They walk the site together, identifying the loading dock proximity to the HVAC intake (CO hazard), the polished vinyl reception trAS/NZStion (slip hazard), and the chemical storage cupboard where the alkaline pre-spray and acidic rinse will be decanted. Using the hazard register in the SWMS, they select controls: relocating the truck-mount discharge to face the open carpark, deploying four AS 1319 wet floor signs, fitting a portable CO monitor inside the building, and donning nitrile gloves and P2 respirators before dilution. Both workers sign the SWMS sign-on sheet acknowledging the controls. Midway through the job, the offsider notices the CO monitor reading climbing toward 25 ppm because wind direction has shifted. Following the SWMS dynamic-review clause, work is paused, the truck is repositioned, ventilation is increased by propping the loading door, and the change is recorded on the SWMS amendment log before extraction resumes. The drying phase is monitored with a moisture meter until readings fall below 16% before signage is removed and the site handed back.

Related legislation

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

Frequently asked questions