A practical guide for lab managers, safety officers, and facilities teams across the UK.
Planning a laboratory fit out involves far more than installing benches and equipment. Safety, compliance, and ventilation design must come first — and at the centre of all three is local exhaust ventilation (LEV).
What Is a Laboratory Fit Out?
A laboratory fit out is the complete design and build process of creating a safe, functional, and compliant laboratory environment. A professional fit out covers space planning, fume cupboard installation, electrical and plumbing services, specialist finishes, and — critically — a fully designed local exhaust ventilation system. Every element must work together. A poorly designed space raises contamination risks, reduces productivity, and — most importantly — puts people's health at risk.
Why Local Exhaust Ventilation Is Essential
Local exhaust ventilation (LEV) captures and removes airborne contaminants — fumes, dust, vapours, and gases — at the point of generation, before they reach workers' breathing zones. In the UK, LEV is a legal requirement under the Control of Substances Hazardous to Health (COSHH) Regulations 2002. The HSE mandates that employers must control exposure to hazardous substances, and LEV is the most effective engineering solution available.
A standard LEV system consists of four components:
- Hood or capture device — positioned close to the contaminant source
- Ducting — transports contaminated air away from the workspace
- Air cleaning device — filters or treats air before discharge
- Fan unit — drives airflow through the system
Key Considerations for Your Laboratory Fit Out
1. Fume Cupboard Selection
Fume cupboards are the primary source of local exhaust ventilation in most laboratories. When choosing cupboards for your laboratory fit out, consider face velocity (typically 0.3–0.5 m/s per BS EN 14175), sash type, and whether a VAV (variable air volume) model will reduce your energy costs. Ducted cupboards are always preferred for highly hazardous substances.
2. Variable Air Volume (VAV) Systems
VAV systems automatically adjust airflow based on fume cupboard sash position, delivering energy savings of 30–60% compared to traditional constant-volume systems. For any laboratory fit out where long-term running costs matter, VAV technology is strongly recommended.
3. UK Compliance Standards
Your laboratory fit out must comply with:
- BS EN 14175 — fume cupboard performance
- DW154 — plastic ductwork specification
- COSHH Regulations 2002 — hazardous substance control
- HSE EH40 — workplace exposure limits
⚠️ Common Mistakes to Avoid
- Underestimating airflow needs — always design for peak demand, not average use
- Poor ductwork design — excessive bends and incorrect materials reduce system performance
- Skipping commissioning — a system that looks right may not perform right
- No maintenance plan — COSHH requires LEV testing every 14 months
Who Needs a Professional Laboratory Fit Out?
Specialist laboratory fit out and local exhaust ventilation solutions are essential across education (schools, colleges, universities), pharmaceutical and life sciences, chemical manufacturing, healthcare and pathology, and research and development environments. Whatever your sector, worker safety is not something to compromise on.
Choosing the Right Fit Out Partner
When selecting a laboratory fit out specialist, look for:
- 20+ years of proven industry experience
- In-house design and installation capability
- CHAS accreditation and relevant industry memberships
- Full commissioning documentation and aftersales support
- A long-term testing, service, and maintenance programme
A successful laboratory fit out is ultimately about one thing: keeping people safe. A well-designed, correctly installed, and properly maintained local exhaust ventilation system is the foundation of every compliant, future-ready laboratory in the UK.
Planning a laboratory fit out? Talk to the UK's LEV specialists.
Planning a laboratory fit out? Talk to the UK's LEV specialists.
Contact Ventxlabs Today
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