When carrying out tasks such as grinding, cutting, or drilling hardwood and softwood, a P3 filter is required to protect against fine wood dust. According to the UK Health and Safety Executive (HSE) document WIS14, this type of work necessitates a protection level of APF20 (Assigned Protection Factor 20). This level of protection ensures the effective reduction of airborne dust inhalation risks.
When working with Medium-Density Fibreboard (MDF), additional protection is required. MDF is composed of recycled wood particles bonded with adhesives, solvents, and binders, all of which are compressed under high temperature and pressure. When cutting or shaping MDF using power tools, not only is fine dust released, but vapours and gases from the adhesives and binders can also be emitted.
In these cases, you will require:
- A P3 filter for protection against fine dust particles.
- A gas and vapour filter capable of filtering organic and inorganic vapours for full respiratory protection.
Always ensure your respiratory protective equipment (RPE) is compatible and provides the correct level of protection for the task at hand.
Key points:
- Use a P3 filter for dust generated from hardwood and softwood.
- A minimum APF20 protection level is required when grinding, cutting or drilling wood.
- MDF work releases both dust and harmful vapours due to its adhesive and binder content.
- MDF applications require both P3 dust protection and gas/vapour filters.
- Always refer to the HSE website should guidance, compliance and best practice be sought.