Risk Assessments · Mandatory · Pre-Construction

RAMS — Fit-Out and Internal Joinery

A specialist RAMS for fit-out and internal joinery covering wood dust COSHH hazards (hardwood WEL 1 mg/m³, softwood 5 mg/m³), working at height on stepladders and mobile access, power tool safety (circular saws, nail guns, routers), and manual handling of heavy furniture and staircase components. On-tool dust extraction is the primary control, not RPE alone. MDF is treated as hardwood dust for all COSHH purposes.

Last reviewed: 2 April 2026 — This guide reflects UK law as of this date. MHSWR 1999 / COSHH 2002 / WAH Regs 2005 remains current with no amendments enacted as of 2 April 2026. Next scheduled review: 2 April 2027.

1. The Busy Phase That Gets Forgotten

The fit-out phase is typically the busiest, most crowded, and most programme-compressed stage of any construction project. Multiple trades work simultaneously in shared spaces; the programme is under pressure because earlier phases have overrun; and risks are routinely overlooked because the work appears less dramatic than structural or groundworks activities. This is a dangerous combination — the perception that fit-out is ‘low risk’ leads to inadequate RAMS, poor supervision, and preventable injuries.

Wood dust risk is particularly significant during internal joinery. A joiner cutting MDF, hardwood skirting, or oak flooring all day without on-tool extraction or respiratory protective equipment generates airborne dust levels that massively exceed the workplace exposure limit. Hardwood dust is a Group 1 carcinogen — it causes nasal cancer. The workplace exposure limit for hardwood dust is 1 mg/m³ (8-hour TWA), and COSHH Regulation 11 requires respiratory health surveillance (spirometry and symptom questionnaire) for all workers regularly exposed above the action level. This is not optional — it is a legal requirement that many fit-out contractors fail to implement.

On-tool dust extraction is the primary control for wood dust

On-tool dust extraction dramatically reduces wood dust exposure and is practical on most joinery tools. Fit circular saws, routers, and sanders with extraction as the primary control — not RPE alone. On-tool extraction is far more effective than relying on respiratory protective equipment because it captures dust at the point of generation, before it becomes airborne. It also reduces exposure for all workers in the space, not just the operative wearing RPE. Under the COSHH hierarchy, on-tool extraction is required as the primary engineering control; RPE is a supplementary measure for residual exposure.

2. Key Content

The following table sets out the key content areas that a fit-out and internal joinery RAMS must address, and the specific information required in each section.

Section	Content required
Works scope	Full description of fit-out and joinery works: skirting boards, architraves, door linings and hanging, kitchen and bathroom units, built-in furniture, timber flooring, staircase components, shelving, dado and picture rails. Materials specified (softwood, hardwood, MDF, plywood, engineered timber). Location and duration of works.
Wood dust (COSHH) — Species and WEL	Identification of all timber species being cut or machined. Hardwood dust WEL: 1 mg/m³ (8-hour TWA). Softwood dust WEL: 1 mg/m³ (8-hour TWA). MDF classified as hardwood for COSHH purposes (contains hardwood fibres and urea formaldehyde resin). WEL applies to inhalable dust fraction.
Wood dust (COSHH) — Cutting operations	All cutting, sawing, routing, planing, sanding and drilling operations that generate wood dust. Frequency and duration of each operation. Whether work is carried out in enclosed spaces, corridors, or well-ventilated areas. Assessment of likely dust concentrations against WEL.
Wood dust (COSHH) — Controls	On-tool dust extraction as primary control (circular saws, routers, sanders, planers). H-class vacuum cleaner (HEPA filter) for extraction and clean-up. Designated cutting area with local exhaust ventilation where practicable. RPE (FFP3 minimum) as supplementary control for residual exposure. COSHH Reg 11 health surveillance (spirometry) for regularly exposed workers.
Working at height — Tasks	Identify all tasks requiring work above floor level: hanging doors and frames, fixing high-level skirting/dado, installing ceiling-mounted fixtures, fitting kitchen wall units, staircase installation, high-level shelving and storage.
Working at height — Access equipment	Specify access equipment for each task: podium steps, hop-ups, mobile scaffold towers, stepladders (short-duration only). All access equipment inspected before use and at regular intervals. PASMA training for mobile scaffold tower users.
Working at height — WAH hierarchy	Apply the working at height hierarchy for each task: avoid work at height where possible (pre-assemble at ground level); use collective fall prevention (scaffold, podium); use personal fall protection only as last resort. Document the hierarchy assessment for each elevated task.
Working at height — Floor condition	Assessment of floor surface condition: incomplete floors, temporary coverings, openings, wet surfaces, trailing cables, offcuts and debris. Floor must be clear and stable before access equipment is positioned. Edge protection at floor openings and stairwells.
Power tools — Circular saw	Guarding in place and functional. Correct blade for material being cut. On-tool dust extraction connected. RCD-protected power supply. Operator trained and competent. Blade condition checked before use.
Power tools — Nail gun	Sequential trigger mechanism (not bump-fire). Correct nail type and length for substrate. Clear line of fire — check behind and around the workpiece. Hearing protection required. Tool disconnected when not in use and when clearing jams.
Power tools — Router	Correct cutter for material and task. On-tool dust extraction connected. Workpiece clamped or secured. Operator trained in safe routing technique. Guards and guide fences in place.
Power tools — PUWER	All power tools compliant with PUWER 1998: maintained in safe condition, inspected at suitable intervals, CE/UKCA marked, instruction manual available. Defective tools removed from service immediately. Portable appliance testing (PAT) current.
Manual handling	Assessment of manual handling tasks: carrying sheet materials (MDF, plywood), lifting kitchen units, manoeuvring door blanks, transporting timber lengths through restricted spaces. Mechanical aids specified where practicable: trolleys, panel carriers, vacuum lifters.
PPE required	Safety footwear (minimum S3 with penetration-resistant sole). Eye protection for all cutting and routing operations. Hearing protection for power tool use (circular saw, router, nail gun). RPE (FFP3) for wood dust exposure. Dust-rated overalls where prolonged cutting is carried out.
Housekeeping	Continuous housekeeping during fit-out works. Wood dust and offcuts cleared regularly using H-class vacuum — never swept with a broom. Waste timber segregated for disposal. Work area kept clear of trailing cables, packaging, and debris. Fire risk from accumulated wood dust and shavings addressed.
Interface with other trades	Coordination with other trades working in the same space: electricians, plumbers, decorators, flooring contractors. Sequencing of works to avoid simultaneous dust-generating and wet-trade operations. Communication of hazards (e.g. nail gun use, dust generation) to adjacent workers. Shared access routes and material storage areas agreed.

3. Common Mistakes

Sweeping up wood dust instead of vacuuming it

Sweeping wood dust with a broom redistributes fine particles back into the air, re-creating the very inhalation exposure that the cutting controls were designed to prevent. The correct method is to use an H-class vacuum cleaner fitted with a HEPA filter. H-class vacuums are designed to capture fine, hazardous dusts without re-emission. Sweeping is never an acceptable clean-up method for wood dust — it exposes the person sweeping and everyone else in the space to airborne hardwood dust at concentrations that can exceed the WEL.

Using a stepladder for prolonged work above shoulder height

Stepladders are not suitable for tasks that require both hands to be used above shoulder height, for work lasting more than 30 minutes, or for carrying bulky or heavy loads while climbing. Fit-out joinery frequently involves all three of these scenarios — fixing high-level skirting, hanging doors, installing wall units. A mobile scaffold tower or hop-up platform provides a stable working platform with both hands free and is the correct access solution for these tasks. Stepladders should be reserved for brief, light-duty tasks only.

4. Frequently Asked Questions

Does the hardwood dust WEL apply to MDF?▾

Yes. MDF contains hardwood fibres and urea formaldehyde resin. The hardwood workplace exposure limit of 1 mg/m³ (8-hour TWA) applies to MDF dust. In addition, MDF dust contains formaldehyde vapour with a short-term exposure limit of 0.2 ppm. On-tool dust extraction is particularly important when cutting MDF because the combination of fine particulate and formaldehyde vapour makes uncontrolled exposure especially hazardous. MDF should be treated as hardwood for all COSHH assessment and health surveillance purposes.

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