Dust Control Methods

Silica, wood, lead, concrete and other dusts cause lung disease, cancer and asthma, and some dusts burn or explode. Dust can't be “mostly” controlled with a paper mask. The best programs stop dust at the source with water, ventilation and vacuums, then use respirators as backup.

• Construction Workers
• Remodelers
• Woodworkers
• Manufacturing Workers

Controls in order of preference

1. Eliminate or substitute: use a method or material that makes less dust, such as pre-cut parts, a different tool, or a less dusty product.
2. Engineering controls: water, local exhaust ventilation and shrouds, enclosures, and vacuums that capture dust where it's made.
3. Administrative controls: schedule dusty work when fewer people are near, limit time, restrict areas and clean up properly.
4. PPE: respirators and protective clothing, used with the controls above, not instead of them. See Respiratory Protection.

This is the hierarchy of controls. See Exposure Limits and Silica.

Wet methods

• Apply water at the point of cutting, grinding, drilling or chipping using integrated water feed, a hose or a pressurized sprayer. The water must keep the dust from becoming airborne, not just wet the surface after the fact.
• Keep enough water flowing so the dust is wet at the cut. Check for dry spots and dust clouds.
• Manage the slurry: don't let it dry and turn back into dust. Collect, contain and dispose of it according to rules, and keep it out of storm drains. See Micro-Trenching for Fiber.
• Don't use water near live electrical equipment unless the tool and circuit are designed for it, with GFCI protection. See GFCI Protection.
• Wetting isn't appropriate for every dust, such as combustible metals or water-reactive products. Check the SDS.

Local exhaust and vacuums

• Use tools with dust shrouds connected to a vacuum with an appropriate filter. For silica and fine dust, that usually means a HEPA-filtered vacuum with enough airflow for the tool, following the tool maker's specification. See Dust Extractors.
• Keep hoses short and straight, clear of kinks, and empty the container before it's full. Clean or change filters following the maker's directions, carefully, without shaking dust out.
• Use fixed ventilation hoods or booths for shop work, sized for the process, and keep the air moving toward the hood. See Ventilation.
• Use enclosures and barriers with negative air pressure for renovation work, to keep dust from spreading. See Lead.

Housekeeping that works

• Vacuum with HEPA filtration or wet-wipe surfaces. Don't dry sweep or use compressed air to clean off clothes or surfaces, since it puts dust back in the air. OSHA's silica rule restricts both. See Combustible Dust for dusty plants.
• Clean up regularly so dust doesn't pile up on ledges and beams.
• Bag and seal dust and waste. Label it if it contains hazardous material.
• Don't eat, drink or smoke in dusty areas. Wash hands and face before breaks.

Check that controls work

• Walk the job and look for dust clouds, dust on surfaces and workers' clothes. Visible dust means the controls are failing.
• Inspect shrouds, hoses, filters and water flow before each shift.
• Use air monitoring where required or when you aren't sure, and compare results with exposure limits. OSHA's construction silica rule has a Table 1 listing tasks with required controls and respirator levels. See Concrete Cutting.
• Train workers on the controls and why they matter, and stop work if controls fail.

Dust control checklist

• I looked for a way to make less dust or remove the task
• Water or shrouded tools with a HEPA vacuum are running at the point of the cut
• Hoses, filters and water flow have been checked this shift
• I clean with HEPA vacuum or wet methods, not dry sweeping or compressed air
• Respirators are fit-tested and used as backup for the controls

Last updated: October 5, 2026