HSE warns against dry cutting: control and compliance takeaways for engineers
Reviewed by Joe Ashwell

First reported on The Construction Index
30 Second Briefing
HSE has banned dry cutting of engineered stone in the UK and ordered a shift towards lower-silica materials after two worker deaths from silicosis in the sector. The guidance requires wet cutting or on-tool extraction with high-efficiency local exhaust ventilation for any remaining high-silica products, bringing practice closer to controls already used on tunnelling and concrete cutting. Fabricators and contractors now face mandatory process changes, material substitution reviews, and likely revisions to COSHH risk assessments and respiratory protection programmes.
Technical Brief
- Dry processing of engineered stone now constitutes a prosecutable breach of the Control of Substances Hazardous to Health Regulations.
- HSE’s guidance treats engineered stone fabrication as high-risk silica work, aligning controls with quarrying and tunnelling.
- Employers must evidence “adequate control” of respirable crystalline silica via documented LEV design, maintenance and performance checks.
- COSHH assessments now need explicit justification of material choice where silica content exceeds natural stone alternatives.
- Respiratory protective equipment programmes must verify assigned protection factors are compatible with measured task-specific dust levels.
- HSE expects written cleaning regimes using wet methods or class H vacuums, explicitly prohibiting dry sweeping of dust.
- Health surveillance requirements tighten, with baseline and periodic lung function checks for exposed workers strongly indicated.
- Similar control expectations are likely to extend to high-silica tile cutting, precast finishing and refractory linings.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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