Concrete Curing & Protection SWMS

Concrete curing and protection covers the controlled hydration of freshly placed concrete using water cure (ponding, sprinkling, soaker hoses), membrane-forming compounds, or plastic sheet cure, including the critical timing of cure commencement, ongoing moisture maintenance, sheet placement and weighting, joint and edge protection, and surface temperature monitoring. Although curing follows the pour, it remains construction work under the WHS Regulation 2025 because it involves chemical exposure, manual handling of wet sheeting, working on freshly cured slabs with reduced friction, and frequently occurs in confined slab edges, podium decks, or trafficable areas. A Safe Work Method Statement is mandatory whenever the curing task intersects High Risk Construction Work under section 291 — typically through manual handling of wet plastic sheeting and the slip/trip risk created across the protected surface. The SWMS documents hazard identification, hierarchy-based controls, consultation with the curing crew, and the supervisory sign-on required before the first sheet is laid or the first membrane sprayed.

Hazards identified

7 hazards covered, sorted by priority.

Control measures

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

1. 1Elimination — Specify internally-cured concrete or self-curing admixtures during design phase to remove the need for external water or membrane cure entirely on suitable mixes.
2. 2Elimination — Schedule curing sheet placement before slab is trafficable to other trades, eliminating exposure of unrelated workers to the slip hazard zone.
3. 3Substitution — Substitute solvent-based membrane curing compounds with water-based wax-emulsion or resin compounds compliant with AS 3799 to reduce VOC inhalation risk.
4. 4Substitution — Replace heavy continuous polyethylene rolls with pre-cut lightweight curing blankets sized for two-person lift under 16 kg per piece.
5. 5Engineering — Erect physical barricades and high-visibility bunting around the curing zone to exclude other trades, and provide mechanical sheet-laying frames where deck size permits.
6. 6Engineering — Use airless spray equipment with extension wands and local exhaust on enclosed pours to keep membrane aerosols below the breathing zone.
7. 7Administrative — Conduct pre-start SWMS sign-on covering cure method, expected weather, exclusion zone, and emergency eyewash location; rotate crew every 90 minutes during heat.
8. 8Administrative — Implement a permit-style curing zone log noting sheet placement time, re-wetting schedule, temperature readings, and the supervisor authorising trade re-entry.
9. 9PPE — Issue chemical-resistant nitrile gauntlets, indirect-vent chemical splash goggles, P2 vapour respirators during membrane spray, and Class 5 slip-rated safety boots.
10. 10PPE — Provide high-visibility long-sleeve garments, sunscreen, and insulated gloves for winter cure, with cooling vests available for summer re-wetting rounds above 32°C.

Applicable Codes of Practice

High-Risk Construction Work triggered

Worked example

On a four-level commercial podium pour, the concrete foreman opens this SWMS at the 5:30 am pre-start with the three-person curing crew before the final trowel pass is complete. Working through the hazard register, the crew confirms the day's forecast peak of 34°C triggers the heat stress control — a 90-minute rotation and chilled water station at the lift core. The membrane option is ruled out because the architect specified an applied floor finish, so water cure with poly sheeting is selected; the foreman walks the crew through the manual handling control requiring pre-cut 4-metre sheet lengths and two-person carries rather than dragging full rolls. Each worker signs the SWMS against the specific controls they will perform, noting their PPE — Class 5 slip-rated boots, nitrile gauntlets and splash goggles. Barricade bunting and 'Curing Zone — No Entry' signs go up before the first sheet is laid. Mid-morning, an unplanned crane lift requires a dogger to cross the slab; the supervisor pauses work, references the SWMS exclusion-zone clause, and issues a controlled crossing using temporary anti-slip matting, recording the deviation in the curing zone log. At handover, the signed SWMS and log are filed against the project HSE record for the statutory retention period.

Related legislation

• WHS Act 2011 (model)
• WHS Regulation 2025
• AS 3600 — Concrete structures

Frequently asked questions