Risk Assessments · Mandatory · Pre-Construction

RAMS — Plastering and Drylining

This RAMS covers wet plastering, dry lining, and boarding operations. It addresses manual handling of plasterboard sheets, dust from cutting and sanding, stilts and platform use for high-level work, and skin irritation from gypsum-based products. Dust control measures including LEV or RPE are required when cutting board materials.

Last reviewed: 29 March 2026 — This guide reflects UK law as of this date. MHSWR 1999 remains current with no amendments enacted as of 29 March 2026. Next scheduled review: 29 March 2027.

Legal basis	MHSWR 1999 Regulation 3 + COSHH 2002 + Manual Handling Operations Regulations 1992 + CDM 2015
RAMS category	B17 Plastering & Drylining
Who	Plastering and drylining contractors
Key COSHH substances	Gypsum dust, respirable crystallite silica (RCS), lime (calcium hydroxide)
Manual handling focus	Plasterboard sheets (standard 12.5mm board weighs approximately 22kg per sheet)
Service strike risk	Fixing through walls and ceilings into concealed cables, pipes, and gas lines
Enforcing authority	Health and Safety Executive (HSE)

1. What It Covers

A RAMS for plastering and drylining must address the full range of activities within this work scope — from wet plastering with gypsum and lime-based products through to dry lining with plasterboard, metal framing systems, and jointing compounds. Despite being perceived as a lower-risk trade, plastering and drylining presents significant COSHH, manual handling, and service strike hazards that are frequently underestimated.

The RAMS should cover skim plastering, multi-coat plasterwork, dot and dab, metal stud partitioning, ceiling lining, drylining to masonry walls, taping and jointing, and any associated cutting, chasing, or fixing operations. Each activity generates distinct dust exposures and manual handling demands that must be individually assessed — a single generic statement will not satisfy the COSHH Regulations or the Manual Handling Operations Regulations.

Service strikes are a leading cause of serious injury in this trade

Plasterers and dry liners routinely fix into walls and ceilings without knowing the exact position of concealed electrical cables, water pipes, or gas lines. Every fixing operation carries a service strike risk. The RAMS must require cable detection (CAT scan or equivalent) before any mechanical fixing, and all operatives must be trained in safe fixing techniques and the emergency procedure if a service is struck.

2. Dust Workplace Exposure Limits

Plastering and drylining generates significant airborne dust. The COSHH Regulations 2002 require the employer to prevent or adequately control exposure to hazardous substances. The following table sets out the workplace exposure limits (WELs) for the dust types most commonly encountered in this trade. All values are 8-hour time-weighted averages (TWA) as published in EH40/2005 (Fourth Edition, 2020).

Substance	Inhalable WEL (mg/m3)	Respirable WEL (mg/m3)	Notes
Gypsum dust (calcium sulphate)	10	4	Generated during mixing, sanding, and cutting plasterboard. Classified as a nuisance dust but WELs still apply.
Respirable crystalline silica (RCS)	N/A	0.1	Generated when cutting, chasing, or grinding masonry, concrete, or sand-based renders. A Category 1A carcinogen under CLP. Health surveillance required where exposure is significant.
Lime dust (calcium hydroxide)	Caustic	Caustic	Lime is a strong alkite. No numeric WEL — exposure must be prevented. Causes severe burns to skin, eyes, and respiratory tract. RPE and skin protection mandatory.
General inhalable dust (PNOC)	10	4	Applies to mixed construction dust where no substance-specific WEL exists. Not a safe level — exposure should still be reduced to as low as reasonably practicable.

RCS at 0.1 mg/m3 is one of the lowest WELs in construction

Respirable crystalline silica has a WEL of just 0.1 mg/m3 — one hundred times lower than general inhalable dust. This limit can be exceeded within minutes of dry cutting or chasing masonry without dust suppression. Where plasterers chase into blockwork or concrete for services, a COSHH assessment specific to RCS must be in place and controls (water suppression, on-tool extraction, RPE) must be provided and enforced.

3. Manual Handling

Plasterboard handling is one of the most physically demanding activities in drylining. A standard 2400 x 1200mm board at 12.5mm thickness weighs approximately 22kg, and boards are frequently handled overhead or in awkward positions. The Manual Handling Operations Regulations 1992 require the employer to avoid hazardous manual handling so far as reasonably practicable, and where it cannot be avoided, to assess the risk and reduce it to the lowest level reasonably practicable.

Task	Load	Risk factors	Control measures
Delivery to floor / work area	22kg per board (standard 12.5mm)	Distance from vehicle to work area, stairways, narrow corridors, multiple trips	Mechanical handling where practicable (board trolley, hoist); delivery to closest point; two-person carry for long distances
Carrying boards through building	22kg per board	Awkward grip, obstruction by doorways and corners, uneven floors, stairs	Board carriers (handles); clear access routes; remove obstructions; two-person lift; limit carry distance
Fixing boards to walls	22kg per board held vertically	Holding board in position while fixing, sustained grip, working from steps or platforms	Board lifter or foot lever to position board; two-person fix where practicable; task rotation to limit sustained holding
Fixing boards to ceilings	22kg held overhead	Overhead work, sustained arm elevation, board weight above head height, risk of board falling	Drywall lift (board hoist) mandatory for ceiling boards; eliminates manual overhead holding; lone working on ceiling boards must be prohibited without mechanical aid
Storage and stacking	Multiple boards (pallets 750kg+)	Stack collapse, floor loading, access for extraction, manual extraction from stack	Stack on level surface; limit stack height; ensure floor can support load; boards stored flat or on edge in purpose-built rack; mechanical handling for pallets

Ceiling board fixing without a drywall lift is one of the highest MSD risks in fit-out

Manually holding a 22kg plasterboard overhead while fixing it to a ceiling is one of the most physically demanding tasks in construction. It places extreme load on the shoulders, neck, and upper back and is a leading cause of musculoskeletal disorders (MSDs) in the drylining trade. A drywall lift (board hoist) eliminates this risk entirely and should be specified as mandatory in the RAMS for all ceiling work.

4. Key Hazards

The following table sets out the principal hazards associated with plastering and drylining, who is at risk, and the control measures that should be addressed in the RAMS.

Hazard	Who at risk	Control measures
Dust inhalation (gypsum, jointing compound)	Plasterers, dry liners, adjacent trades	On-tool dust extraction for sanding and cutting; damping down; FFP2 RPE minimum; LEV where enclosed; COSHH assessment
Respirable crystalline silica (RCS)	Operatives chasing or cutting masonry, concrete, or sand-based render	Water suppression for cutting; on-tool extraction; FFP3 RPE; health surveillance programme; COSHH assessment specific to RCS
Service strike (electrical, gas, water)	Operatives fixing into walls and ceilings	Cable detector (CAT scan) before every fixing operation; isolation of circuits where practicable; safe fixing zones; emergency procedure briefed to all operatives
Musculoskeletal disorders (MSDs)	All drylining and plastering operatives	Drywall lift for ceiling boards; board trolleys and carriers; two-person handling; task rotation; manual handling assessment; early reporting of symptoms
Falls from height	Operatives working from steps, trestles, hop-ups, or scaffolding	Platform stepladders or hop-ups for low-level work; mobile scaffold tower for work above 2m; edge protection; WAH assessment; prohibition of makeshift platforms
Skin burns (lime, cement)	Wet plasterers handling lime putty, cement render, or bonding agents	Chemical-resistant gloves; barrier cream; long sleeves; eye protection; immediate washing if skin contact occurs; COSHH assessment for alkaline products
Slips, trips, and falls	All operatives in the work area	Good housekeeping; removal of offcuts and packaging; management of wet plaster spillage; adequate lighting; clear access routes
Noise	Operatives using power tools (saws, screw guns, sanders)	Noise assessment; low-noise tools where available; hearing protection (SNR-rated); signage for hearing protection zones; health surveillance where daily exposure exceeds 85 dB(A)

5. Competence Requirements

Plastering and drylining operatives require trade-specific qualifications and a valid CSCS card to work on most UK construction sites. The RAMS must confirm that all operatives hold the required competence and that evidence has been verified before work begins.

Qualification / Card	Scope	Status / Notes
NVQ Level 2 Plastering (Solid)	Wet plastering — skimming, rendering, multi-coat plasterwork	Required for CSCS Blue Skilled Worker card for plastering
NVQ Level 2 Interior Systems (Dry Lining)	Metal stud partitioning, board fixing, taping and jointing, ceiling lining	Required for CSCS Blue Skilled Worker card for interior systems / dry lining
CSCS Blue Skilled Worker card	Confirms NVQ achievement and valid CITB Health, Safety and Environment test	Valid for 5 years. Must be renewed before expiry. Required for site access on most projects.
CSCS Industry Accreditation (IA) card	Previously issued to operatives with employer-assessed competence but no NVQ	Expired January 2025. No longer valid for site access. Holders must achieve an NVQ to obtain a Blue Skilled Worker card.
CSCS Provisional card	Issued to operatives registered for an NVQ but not yet completed	Valid for limited period. Operative must complete NVQ within the card validity window.

CSCS Industry Accreditation (IA) cards expired January 2025

The CSCS IA card was a transitional card issued to experienced operatives who had not achieved an NVQ. All IA cards expired on 31 January 2025 and are no longer valid for site access. Any plastering or drylining operative still presenting an IA card must not be permitted to work until they have obtained a valid CSCS card underpinned by an NVQ or are registered on a qualifying pathway with a valid Provisional card.

6. Common Mistakes

No COSHH assessment for dust exposure

Gypsum dust is frequently dismissed as harmless because it is not classified as a hazardous substance. However, the workplace exposure limit for inhalable dust (10 mg/m3) and respirable dust (4 mg/m3) still applies. Sanding jointing compound in an enclosed room without extraction can exceed the WEL within minutes. A COSHH assessment must be completed for every dust-generating activity in the plastering and drylining work scope.

No cable detection before fixing

Fixing plasterboard to walls and ceilings with screw guns is one of the most common ways concealed cables and pipes are struck. Every fixing operation must be preceded by a cable detection scan. The RAMS must mandate the use of a cable detector (CAT scan or equivalent) and specify the procedure for identifying and avoiding concealed services. Reliance on visual inspection alone is not adequate.

Manual ceiling board fixing without a drywall lift

Holding a 22kg plasterboard overhead while fixing it to ceiling joists or a metal grid is one of the highest musculoskeletal disorder risks in the fit-out trades. A drywall lift eliminates the overhead holding hazard entirely. The RAMS must specify that a drywall lift is used for all ceiling board fixing and that manual overhead fixing is prohibited.

Accepting expired CSCS IA cards

CSCS Industry Accreditation cards expired on 31 January 2025. Any operative presenting an IA card no longer holds a valid CSCS card and must not be permitted on site. Principal contractors and site managers must check card validity at induction and reject expired IA cards. Operatives should be directed to obtain an NVQ-backed Blue Skilled Worker card or register for a Provisional card.

Ignoring RCS exposure from chasing and cutting

Where plasterers chase into blockwork or concrete for services, or cut masonry with a disc cutter, respirable crystalline silica is released. RCS has a WEL of just 0.1 mg/m3 and is a Category 1A carcinogen. A separate COSHH assessment for RCS must be in place, water suppression or on-tool extraction must be used, FFP3 RPE must be provided, and health surveillance must be implemented for operatives with regular exposure.

7. Frequently Asked Questions

Is gypsum dust a hazardous substance under COSHH?▾

Gypsum (calcium sulphate dihydrate) is not classified as a hazardous substance under CLP. However, the COSHH Regulations still apply because the workplace exposure limits for inhalable dust (10 mg/m3) and respirable dust (4 mg/m3) must not be exceeded. Sanding, cutting, and mixing gypsum-based products generates significant airborne dust that can exceed these limits in enclosed or poorly ventilated areas. A COSHH assessment is required for all dust-generating activities.

When is health surveillance required for plastering and drylining operatives?▾

Health surveillance is required where operatives are regularly exposed to respirable crystalline silica (RCS) — for example, from chasing into blockwork or cutting masonry. The surveillance programme should include a baseline health questionnaire and lung function testing, with periodic reviews. For gypsum dust alone, health surveillance is not typically required unless exposure levels are consistently near or above the WEL, but the COSHH assessment must document the rationale for the decision either way.

Are CSCS IA cards still valid for plastering and drylining operatives?▾

No. All CSCS Industry Accreditation (IA) cards expired on 31 January 2025. Operatives who previously held IA cards must now obtain an NVQ Level 2 in their trade (Plastering or Interior Systems) and apply for a Blue Skilled Worker card. In the interim, operatives who are registered for an NVQ may be eligible for a Provisional card, which provides temporary site access while the qualification is being completed.

What RPE is required for plasterboard sanding?▾

For general gypsum dust from sanding jointing compound or plasterboard, an FFP2 disposable mask or equivalent half-face respirator with P2 filter is the minimum standard. Where the task involves sanding in an enclosed space or for prolonged periods, powered air-purifying respirator (PAPR) equipment should be considered to reduce respiratory fatigue. Where RCS may be present (e.g. sanding sand-based render), FFP3 or equivalent is required. The COSHH assessment must specify the RPE standard for each task.

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