PPE is the last line of defence. Relying on masks to solve a dust problem leaves workers exposed if the seal fails, the wrong filter is used, or fatigue sets in. Effective sites apply the hierarchy of control to stop dust at source, limit spread and then support with PPE.

Eliminate and substitute first

Remove dusty steps where possible: order pre-cut materials, use factory-finished components, and switch to wet-mix or pre-bagged products to minimise manual handling of powder.

Use engineering controls

Engineering controls, such as on-tool extraction, LEV and mobile air scrubbers, prevent dust leaving the process. Fit shrouds, connect to suitable M/H-Class vacuums, and verify airflow under load. Establish negative air in small rooms to pull dust away from occupants and out through high-efficiency filters.

Administrative controls that actually work

Plan the sequence so dusty tasks happen when fewer people are present. Zone work areas, set up clean and dirty routes, and post simple door rules for rooms under negative pressure. Train supervisors to challenge non-compliant methods early.

PPE as the final layer

Once controls are in place, issue RPE matched to the hazard and task duration, and fit-test tight-fitting masks. Keep spares, storage and maintenance routines so PPE is clean, dry and available. Record checks under COSHH.

Practical takeaways

• Remove or substitute dusty processes before work starts.
• Fit extraction and verify performance under load.
• Use negative air and zoning to stop dust migration.
• Schedule dusty work to reduce occupancy.
• Use PPE as a backup, with fit-testing and maintenance.

PPE matters, but controls that stop dust being created or escaping make the real difference to health and compliance.