Rubber Flooring Science Hub

Understanding the science behind rubber flooring helps you make informed decisions. This technical hub explores rubber materials, properties, and performance characteristics that determine which flooring solution is right for your application.

Rubber Material Types

Not all rubber is created equal. Understanding the different rubber compounds helps you select the right material for your specific environment and performance requirements.

Natural Rubber (NR)

Derived from the latex sap of rubber trees (Hevea brasiliensis), natural rubber offers excellent elasticity, tensile strength, and tear resistance. It's ideal for applications requiring flexibility and resilience but has limited resistance to oils, UV light, and extreme temperatures.

• Best for: Gym flooring, playground surfaces, general-purpose matting
• Temperature range: -50°C to +70°C
• Key properties: High elasticity, excellent abrasion resistance

EPDM Rubber (Ethylene Propylene Diene Monomer)

A synthetic rubber known for outstanding weather resistance, EPDM excels in outdoor applications where UV exposure and temperature extremes are concerns. Its colour stability makes it popular for decorative installations.

• Best for: Outdoor playgrounds, rooftop walkways, coloured surfacing
• Temperature range: -40°C to +120°C
• Key properties: UV stable, ozone resistant, excellent weathering

→ Read: EPDM vs SBR Rubber Comparison

SBR Rubber (Styrene Butadiene Rubber)

The most common synthetic rubber, SBR offers a cost-effective balance of properties. Often made from recycled tyres, it provides good abrasion resistance and is widely used in industrial and commercial flooring.

• Best for: Gyms, warehouses, general industrial flooring
• Temperature range: -40°C to +100°C
• Key properties: Cost-effective, good abrasion resistance, recyclable

Nitrile Rubber (NBR)

Nitrile rubber offers exceptional resistance to oils, fuels, and chemicals, making it essential for automotive, aerospace, and industrial environments where petroleum-based substances are present.

• Best for: Workshops, garages, oil refineries, food processing
• Temperature range: -30°C to +120°C
• Key properties: Oil resistant, fuel resistant, FDA-approved grades available

→ Browse Nitrile Rubber Sheets

Neoprene Rubber (CR)

Neoprene provides excellent resistance to weathering, ozone, and moderate chemicals. It also offers good flame resistance, making it suitable for applications where fire safety is a consideration.

• Best for: Outdoor applications, marine environments, fire-rated areas
• Temperature range: -35°C to +100°C
• Key properties: Flame resistant, weather resistant, moderate oil resistance

Key Performance Properties

Shore A Hardness

Shore hardness measures rubber's resistance to indentation, indicating how firm or soft a material feels. The Shore A scale (0-100) is used for flexible rubbers, with higher numbers indicating harder materials.

Shore A Rating	Feel	Applications
20-40	Very soft, spongy	Anti-fatigue mats, comfort flooring
40-60	Medium firmness	Gym flooring, playground surfaces
60-70	Firm	Industrial flooring, walkways
70-90	Hard	Heavy traffic areas, machinery bases

→ Full Guide: Understanding Shore A Hardness

Density

Rubber density affects weight, durability, and cushioning properties. Measured in kg/m³, density helps predict how flooring will perform under load and over time.

• Low density (500-800 kg/m³): Lighter, more cushioning, less durable under heavy loads
• Medium density (800-1,200 kg/m³): Balanced performance for most applications
• High density (1,200-1,600 kg/m³): Maximum durability, less cushioning, heavy equipment areas

→ Full Guide: Rubber Density Explained

Compression Set

Compression set measures how well rubber recovers after being compressed. Lower percentages indicate better recovery—the rubber bounces back to its original shape rather than staying compressed.

• Excellent: <10% compression set
• Good: 10-25% compression set
• Acceptable: 25-40% compression set

High-quality gym and anti-fatigue flooring should have compression set below 15% to maintain cushioning over years of use.

→ Full Guide: Compression Resistance

Tensile Strength

Tensile strength measures the maximum stress rubber can withstand before breaking when stretched. Higher tensile strength indicates more durable flooring that resists tearing.

• Standard flooring: 5-10 MPa
• Industrial grade: 10-15 MPa
• Heavy-duty: 15-25 MPa

Abrasion Resistance

Measured by volume loss under standardised wear testing, abrasion resistance predicts how long flooring will last under foot traffic and equipment movement. Lower volume loss = better durability.

Environmental Resistance

UV Resistance

Ultraviolet radiation breaks down rubber molecules, causing fading, cracking, and brittleness. UV-stable compounds like EPDM maintain their properties for 15-25 years in direct sunlight, while standard SBR may degrade within 5-10 years outdoors.

→ Full Guide: UV Resistance

Fire Resistance

Rubber can be formulated with fire-retardant additives to meet specific safety standards. Key classifications include:

• Bfl-s1: Suitable for commercial buildings (EN 13501-1)
• Cfl-s1: Standard commercial flooring
• UL 94 HB: Horizontal burn rating

→ Full Guide: Fire Resistance Ratings

Chemical Resistance

Different rubber compounds resist different chemicals:

• Nitrile: Oils, fuels, hydraulic fluids
• EPDM: Acids, alkalis, steam
• Neoprene: Moderate oils, weathering, ozone
• Silicone: Extreme temperatures, food contact

→ Browse Chemical-Resistant Rubber Sheets

Recycled vs Virgin Rubber

Modern rubber flooring increasingly uses recycled materials, particularly from end-of-life tyres. Understanding the differences helps balance environmental goals with performance requirements.

Recycled Rubber (SBR Crumb)

• Source: Processed from recycled tyres
• Environmental benefit: Diverts 1 tyre per 10-15 sq ft of flooring from landfill
• Properties: Excellent for non-critical applications, good durability
• Appearance: Typically black or flecked colours
• Cost: 20-40% less than virgin rubber

Virgin Rubber

• Source: Newly manufactured compounds
• Properties: Consistent quality, specific performance characteristics
• Appearance: Wide colour range, uniform finish
• Applications: Critical environments, colour-sensitive projects

→ Full Guide: Recycled vs Virgin Rubber

Testing & Standards

Quality rubber flooring meets recognised industry standards:

• BS EN 1177: Impact attenuation for playground surfacing
• BS 7188: Play area surfacing requirements
• EN 13501-1: Fire classification
• EN 14041: Resilient floor coverings
• ASTM D2240: Shore hardness testing
• ISO 4649: Abrasion resistance

→ Understanding BS EN 1177

Science Hub Guides

Explore our technical guides for deeper understanding:

Related Collections

• Rubber Sheets – Technical grade rubber for all applications
• Commercial Rubber Sheet – Industrial and specialist compounds
• Rubber Flooring – Complete flooring solutions
• Rubber Matting – Heavy-duty industrial matting

Need Technical Advice?

Our technical team can help you select the right rubber compound and specification for your project. Contact us for expert guidance or request free samples to test before you buy.