COS/Specific Substances/TBT-COS-008

Solvents and Degreasers

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Solvents and Degreasers

Toolbox Talk Record

Ref: TBT-COS-008  |  Issue: 1  |  Date: March 2026
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What?

  • Solvents and degreasers are widely used on construction sites for cleaning and preparation.
  • Common types include white spirit, acetone, thinners, trichloroethylene, and citrus degreasers.
  • Solvents enter the body through inhalation of vapours, skin absorption, and accidental ingestion.
  • Short-term exposure causes dizziness, headaches, nausea, and loss of coordination.
  • Long-term exposure can cause permanent liver, kidney, and nervous system damage.
  • Most solvents are highly flammable — vapours are heavier than air and collect in low areas.
  • COSHH 2002 requires a specific assessment for every solvent used on the construction site.
  • Safety data sheets must be available on site for every solvent product in use.
  • Skin contact must be minimised — many solvents cause occupational dermatitis.
  • Solvent-soaked rags are a serious fire hazard and must be stored in closed metal containers.

Why?

Health protectionSolvent vapours damage the brain, liver, kidneys, and nervous system.
Fire riskFlammable vapours in confined areas create explosive atmospheres.
Skin diseaseRepeated skin contact causes dermatitis — the most common occupational skin disease.
Legal complianceCOSHH requires assessment, controls, and health surveillance for solvent exposure.
Do Don't
  • Read the safety data sheet before using any solvent product.
  • Use solvents in well-ventilated areas or with local exhaust ventilation.
  • Wear chemical-resistant gloves appropriate for the specific solvent in use.
  • Store solvents in original labelled containers in a designated COSHH store.
  • Use the minimum quantity needed to reduce vapour generation.
  • Dispose of solvent-soaked rags in a closed metal container, not open skips.
  • Wash hands thoroughly after handling solvents before eating or drinking.
  • Use water-based alternatives where they can achieve the same result.
  • Report any dizziness, headaches, or skin irritation to your supervisor.
  • Keep ignition sources away from solvent use and storage areas.
  • DON'T use solvents in unventilated or enclosed spaces without extraction.
  • DON'T use solvents to clean your hands or skin — use proper cleaners.
  • DON'T smoke or use naked flames near solvents or their vapours.
  • DON'T decant solvents into unmarked or food-type containers.
  • DON'T mix different solvent products unless specified in the SDS.
  • DON'T leave solvent containers open when not actively in use.
  • DON'T dispose of solvents down drains or with general waste.
  • DON'T store solvent-soaked rags in open containers or near heat sources.
  • DON'T ignore skin redness, cracking, or irritation — report it early.
  • DON'T use solvents without completing the COSHH assessment first.

See also: COSHH Awareness | Reading Safety Data Sheets
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