Dust Extraction for Engineered Stone & Silica Dust | V-TUF

Dust Extraction for Engineered Stone, Silica & Stone Fabrication

Engineered stone, quartz worktops, natural stone and concrete all contain respirable crystalline silica (RCS). Cutting, grinding, drilling and polishing these materials generates RCS dust — a Category 1A carcinogen under COSHH with a workplace exposure limit (WEL) of just 0.1 mg/m³ under HSE EH40. The HSE has banned dry cutting of engineered stone and government inspectors are actively visiting fabrication workshops and construction sites across Great Britain to enforce compliance. Non-compliance risks an immediate site shutdown.

HSE enforcement is active now. Government inspectors are visiting more than 1,000 fabrication workshops and construction sites across England, Scotland and Wales. On-tool water suppression or compliant H-Class extraction is a mandatory legal requirement under COSHH for all engineered stone work. Dry cutting is banned.

Why H-Class is mandatory for engineered stone

Respirable crystalline silica WEL is 0.1 mg/m³ under HSE EH40. Engineered stone (quartz composite) typically contains 90-95% crystalline silica by weight. Cutting, trimming and polishing operations generate sub-micron RCS particles that standard M-Class filtration (99.9% at 1 micron) cannot reliably capture at the concentrations generated in fabrication environments.

H-Class extraction (H14 HEPA, 99.995% at 0.3 micron) with sealed system containment is the correct specification for:

Engineered stone and quartz worktop cutting, trimming and polishing
Natural stone grinding and fabrication
Concrete grinding and surface preparation
On-site adjustment of quartz tiles, hearths and composite surfaces
Masonry drilling and chasing in silica-containing materials

M-Class is not adequate for sustained engineered stone work. H-Class with auto-clean filter is the industry specification — auto-clean is essential because fine silica dust clogs filters rapidly and manual-only filter cleaning degrades airflow below the level needed for effective extraction.

Equipment specification for stone fabrication

H-Class extraction with auto-shaker — fabrication workshops

V-TUF GRINDEX1100LPS — 25L H-Class, 110V and 240V

Compact H-Class extraction for worktop fabrication workshops — angle grinder dust extraction, trimmer extraction, polisher integration. H14 HEPA sealed system, auto-shaker filter cleaning for continuous operation during fabrication cycles. Available in 110V for workshop ring main and 240V for standard supply.

View GRINDEX1100LPS 240V → View GRINDEX1100LPS 110V →

V-TUF GRINDEX1200LPS — H-Class twin-motor, IP54, 240V and 110V

High-volume H-Class extraction for busy fabrication workshops with multiple stations or sustained high-output cutting. IP54 rated for dusty fabrication environments. Twin-motor for higher airflow maintaining extraction performance even as filters load with fine silica dust.

View GRINDEX1200LPS 240V → View GRINDEX1200LPS 110V →

V-TUF GRINDEX1300LPS — H-Class three-motor, 3300W

Three-motor H-Class for the largest fabrication operations — multi-station CNC, large slab cutting and sustained production environments where extraction volume demand is highest.

View GRINDEX1300LPS 240V → View GRINDEX1300LPS 110V →

H-Class extraction — on-site adjustment and installation

V-TUF MIDI HSV — 21L H-Class, 110V and 240V

Compact H-Class extraction for kitchen fitters, bathroom fitters and stonemasons making on-site adjustments to quartz worktops, composite hearths and engineered stone tiles. Sealed H14 HEPA, lightweight for transit between sites, available in 110V for construction site power supply.

View MIDI HSV →

AEROMAX air scrubbers — ambient RCS control

Air scrubbers with HEPA filtration for maintaining ambient air quality in fabrication workshops where fine RCS dust becomes airborne despite point-of-source extraction. Particularly relevant for larger workshops or where multiple cutting operations run simultaneously.

View AEROMAX range →

Who this applies to

Worktop fabricators — quartz, engineered stone and composite worktop cutting and polishing
Kitchen fitters — on-site adjustment, sink cutouts and scribing of quartz worktops
Bathroom fitters — quartz shower trays, composite panels, stone tiles
Stonemasons — natural stone cutting, dressing and carving
Tilers — porcelain, ceramic and natural stone tile cutting on construction sites
Construction contractors — concrete grinding, surface preparation, masonry drilling
Flooring contractors — stone and porcelain floor grinding and preparation

LEV examination — COSHH Regulation 9

H-Class extraction equipment used for RCS control is Local Exhaust Ventilation (LEV) under COSHH. COSHH Regulation 9 requires LEV to be thoroughly examined and tested at least every 14 months by a competent person, with records kept for five years. This applies to every H-Class extractor used for silica dust control in a workshop or on site.

V-TUF can provide technical data sheets and filter specifications to support LEV examination records.

Legislation that applies

COSHH Regulations 2002 — RCS is a COSHH-controlled substance. H-Class extraction is the primary engineering control for silica dust. Dry cutting of engineered stone is banned. On-tool water suppression or H-Class compliant extraction is mandatory.

HSE EH40 — RCS WEL 0.1 mg/m³ respirable. This is one of the most stringent WELs in UK occupational health law. Standard M-Class filtration is not adequate for sustained engineered stone fabrication.

CDM 2015 — applies to stone fabrication work on construction sites and refurbishment projects where notifiable works include stone cutting.

PUWER 1998 — extraction equipment is work equipment. Suitable for purpose, maintained and inspected.

H-Class dust extraction — full specification guide → M-Class vs H-Class →

Trade accounts — fabricators and fitters

V-TUF operates trade account terms for worktop fabricators, kitchen and bathroom fitters, stonemasons, tilers and construction contractors working with silica-containing materials. UK stock, next-day delivery, technical documentation for COSHH and LEV records.

Telephone: 01522 787978 | Email: enquiries@v-tuf.com