Chemical Resistant Flooring Guide | Industrial Rubber Solutions UK
Chemical exposure can rapidly degrade unsuitable flooring materials. Understanding chemical resistance is essential for specifying durable, safe flooring in laboratories, manufacturing, food processing, and healthcare environments. This guide explains rubber chemistry, resistance ratings, and material selection for chemical environments.
📋 In This Guide
UK Regulations & COSHH
Control of Substances Hazardous to Health (COSHH) 2002
COSHH requires employers to:
- Assess risks from hazardous substances
- Implement control measures (including appropriate flooring)
- Ensure control measures are maintained
- Provide information and training
Flooring is considered part of the workplace environment that must prevent chemical exposure risks.
Workplace (Health, Safety and Welfare) Regulations 1992
Regulation 12 requires floors to be suitable for purpose, including resistance to substances that may be present.
Environmental Protection
Chemical-resistant flooring also helps with:
- Containment of spills (preventing environmental release)
- Compliance with Environmental Permitting Regulations
- Prevention of groundwater contamination
Industry-Specific Requirements
| Industry | Additional Regulations |
|---|---|
| Food processing | Food Safety Act, HACCP, BRCGS |
| Pharmaceuticals | GMP, MHRA requirements |
| Laboratories | COSHH, biosafety regulations |
| Healthcare | HTM guidelines, CQC requirements |
Rubber Types & Chemical Resistance
Rubber Material Comparison
| Rubber Type | Strong Against | Weak Against |
|---|---|---|
| Natural Rubber (NR) | Water, alcohols, dilute acids | Oils, fuels, ozone |
| Nitrile (NBR) | Oils, fuels, greases | Ketones, strong oxidisers |
| Neoprene (CR) | Weathering, moderate chemicals | Strong oxidisers, esters |
| EPDM | Ozone, weathering, acids, alkalis | Oils, fuels, hydrocarbons |
| Silicone | High temps, ozone, dilute acids | Fuels, concentrated acids |
| Viton (FKM) | Most chemicals, oils, fuels | Ketones, hot water |
| Hypalon (CSM) | Oxidising chemicals, acids | Aromatic hydrocarbons |
Detailed Profiles
Nitrile Rubber (NBR)
Best for: Oil and fuel environments
- ✅ Excellent resistance to petroleum oils, fuels, greases
- ✅ Good resistance to dilute acids and alkalis
- ✅ Temperature range: -30°C to +100°C
- ⚠️ Not suitable for: ketones, chlorinated solvents, strong oxidisers
EPDM Rubber
Best for: Acids, alkalis, cleaning chemicals
- ✅ Excellent resistance to acids (up to 70% concentration)
- ✅ Excellent resistance to alkalis and detergents
- ✅ Outstanding ozone and weathering resistance
- ✅ Thermal shock resistant (hot cleaning in cold rooms)
- ⚠️ Not suitable for: oils, fuels, hydrocarbons
Neoprene (CR)
Best for: General chemical resistance, flame retardancy
- ✅ Good resistance to moderate oils and fuels
- ✅ Good resistance to ozone and weathering
- ✅ Inherently flame retardant
- ✅ Temperature range: -25°C to +100°C
- ⚠️ Not suitable for: strong oxidising acids, esters, ketones
Viton® (FKM)
Best for: Aggressive chemicals, high temperatures
- ✅ Excellent resistance to oils, fuels, and solvents
- ✅ Outstanding acid resistance
- ✅ High temperature tolerance (up to 250°C)
- ✅ Aviation fuel and hydraulic fluid resistant
- ⚠️ Not suitable for: ketones, hot water, steam
Chemical Groups & Compatible Materials
Acids
| Acid Type | Compatible Materials |
|---|---|
| Dilute mineral acids (<20%) | EPDM, Viton, Butyl, Natural |
| Concentrated mineral acids | Viton, Butyl (some) |
| Organic acids (citric, acetic) | EPDM, Viton, Silicone |
| Oxidising acids (nitric, chromic) | Viton only |
Alkalis
| Alkali Type | Compatible Materials |
|---|---|
| Dilute alkalis (<20%) | Most rubbers |
| Concentrated alkalis | EPDM, Butyl, Natural |
| Ammonia | EPDM, Butyl |
Oils & Fuels
| Substance | Compatible Materials |
|---|---|
| Mineral oils | Nitrile, Viton, Neoprene |
| Vegetable/animal oils | Nitrile, Neoprene |
| Petrol/diesel | Nitrile, Viton |
| Jet fuel | Viton |
| Hydraulic fluids | Nitrile (mineral), EPDM (phosphate ester) |
Solvents
| Solvent Type | Compatible Materials |
|---|---|
| Alcohols | EPDM, Natural, Nitrile |
| Ketones (acetone, MEK) | EPDM, Natural, Silicone |
| Chlorinated (DCM, chloroform) | Viton (limited), Silicone (limited) |
| Aromatic (toluene, xylene) | Viton, Silicone (limited) |
⚠️ Always Verify
This table provides general guidance. Always verify compatibility with specific chemicals at actual concentrations and temperatures. Request chemical resistance data from the manufacturer, or conduct compatibility testing for critical applications.
Selecting Chemical-Resistant Flooring
Selection Process
- List all chemicals — Include cleaning agents, raw materials, products, and spills
- Note concentrations — Resistance varies with concentration
- Consider temperature — Hot chemicals are more aggressive
- Check exposure time — Occasional splash vs continuous immersion
- Identify the "worst case" — Select material that handles all exposures
Application Recommendations
Laboratories
- General chemistry: EPDM (acids/alkalis) or Nitrile (solvents)
- Organic chemistry: Viton for solvent resistance
- Biology/healthcare: EPDM with antimicrobial options
- Laboratory Matting
Food Processing
- General food areas: Food-grade Silicone or EPDM
- Oils/fats processing: Food-grade Nitrile
- CIP cleaning areas: EPDM (handles alkaline cleaners)
- Food-Grade Rubber
Automotive/Engineering
- Workshop floors: Nitrile
- Fuel/lubricant areas: Nitrile or Viton
- Cleaning bays: EPDM
- Workshop Flooring
Pharmaceutical/Cleanroom
- Solvent areas: Viton or Silicone
- Water/alcohol: Silicone
- General cleanroom: ESD-safe EPDM or Silicone
- ESD Flooring
Maintenance & Safety
Cleaning Chemical-Resistant Floors
- Check cleaner compatibility with floor material
- Avoid chlorinated solvents on most rubbers
- Rinse thoroughly after cleaning
- Allow proper drying to maintain slip resistance
Spill Response
- Contain the spill (bunds, absorbents)
- Check floor compatibility with spilled material
- Clean according to COSHH procedures
- Inspect floor for damage after cleanup
- Replace damaged sections promptly
Inspection Checklist
- ✓ Surface softening or tackiness (chemical attack)
- ✓ Swelling or blistering
- ✓ Cracking or brittleness
- ✓ Colour changes or staining
- ✓ Delamination from substrate
- ✓ Loss of slip resistance
Documentation
Maintain records of:
- Floor material specifications
- Chemical resistance data sheets
- Inspection and maintenance logs
- Spill incidents and response
Frequently Asked Questions
What's the most chemically resistant rubber?
Viton (FKM) offers the broadest chemical resistance, particularly for oils, fuels, and solvents. However, it's not resistant to everything — ketones and hot water can attack it. For acids and alkalis, EPDM is often superior. There's no single "best" — selection depends on your specific chemicals.
How do I know if my floor is being attacked by chemicals?
Signs include: softening or tackiness, swelling, colour changes, cracking, brittleness, or delamination. Regular inspection is essential. Some degradation is gradual — maintain baseline records to identify changes over time.
Can I use mats over existing flooring for chemical protection?
Yes, chemical-resistant mats provide localised protection for workstations, drip zones, and spill-prone areas. They're often more practical than full floor replacement and can be removed for cleaning or replacement. Ensure mats are secured to prevent slip hazards.
Do chemical-resistant floors need sealing?
Rubber flooring is inherently non-porous and doesn't require sealing. For sheet rubber, joints should be sealed with compatible adhesive or welded to prevent chemical ingress. Modular tiles may need perimeter sealing in high-chemical areas.
How long does chemical-resistant flooring last?
With appropriate material selection and maintenance, 10-20 years is typical. Lifespan depends on chemical severity, concentration, temperature, traffic, and maintenance quality. Areas with severe exposure may need more frequent replacement — plan for this in lifecycle costing.
📖 Further Reading
- Rubber Flooring Science Hub — Material science deep-dive
- Food Factory Flooring Guide — Food-safe chemical resistance
- Factory Rubber Flooring Guide — Industrial applications
- Industrial Rubber Flooring — Browse products
Need Chemical Resistance Advice?
Send us your chemical list and we'll recommend the right material for your application. We can provide compatibility data and test samples. Contact us or call 01744 520 110.
