What is SBR Rubber? Plain English Guide to Styrene-Butadiene Rubber
Last updated: May 2026
What is SBR Rubber?
SBR (Styrene-Butadiene Rubber) is a synthetic rubber made by polymerising styrene and butadiene monomers. It is the world's most widely produced synthetic rubber, valued for its excellent abrasion resistance, durability, and low cost. SBR is the primary material used in rubber matting, gym tiles, vehicle tyres, and many industrial applications across the UK and globally.
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SBR Rubber: Key Properties
| Property | SBR Rating | Notes |
|---|---|---|
| Abrasion Resistance | Excellent | Better than natural rubber in many applications |
| Tensile Strength | Good | Varies by compound; carbon black improves significantly |
| Oil Resistance | Poor | Use Nitrile (NBR) for oil-contact applications |
| UV / Ozone Resistance | Poor | Use EPDM for outdoor applications |
| Temperature Range | -40°C to +100°C | Suitable for most UK environments |
| Water Resistance | Good | Does not absorb water significantly |
| Electrical Insulation | Moderate | Not a primary electrical insulator |
| Cost | Low–Medium | Cheapest synthetic rubber for most applications |
What is SBR Rubber Made From?
SBR is a copolymer — a polymer made from two different monomers combined in a specific ratio. The two building blocks are:
- Styrene (25%) — provides rigidity, abrasion resistance, and processability
- Butadiene (75%) — provides flexibility, elasticity, and low-temperature performance
The standard commercial ratio is approximately 23.5% styrene to 76.5% butadiene. Adjusting this ratio changes the material's hardness, flexibility, and temperature performance.
Recycled SBR Rubber: What You Need to Know
Most rubber matting sold in the UK is made from recycled SBR — specifically from shredded end-of-life vehicle tyres. This is why you'll see terms like "recycled rubber," "crumb rubber," or "SBR granules" on product listings.
Recycled SBR matting:
- Contains recycled tyre rubber bonded with a polyurethane binder
- Is environmentally friendly — diverts tyres from landfill
- Performs comparably to virgin SBR for most flooring applications
- Is typically 20–40% cheaper than virgin or EPDM rubber
- Has a characteristic black colour (due to carbon black in tyre compound)
SBR vs EPDM vs Nitrile: Which Rubber Should You Choose?
| Rubber Type | Best For | Not Suitable For | Cost |
|---|---|---|---|
| SBR | Gym floors, stable mats, indoor matting | Oil contact, UV exposure | £ (Lowest) |
| EPDM | Outdoor use, coloured flooring, UV exposure | Oil, fuel, solvents | ££ |
| Nitrile (NBR) | Oil/fuel contact, garage floors, workshops | Outdoor UV without protection | £££ |
| Neoprene | Marine, chemical exposure, wide temperature | Budget applications | ££££ |
| Natural Rubber (NR) | High elasticity, vibration isolation | Ozone, UV, oils | ££–£££ |
Where is SBR Rubber Used?
- Rubber flooring and matting — The majority of UK rubber floor tiles, gym flooring, and stable mats are SBR
- Vehicle tyres — SBR accounts for around 60% of all tyre rubber compounds
- Conveyor belts — Valued for abrasion resistance in industrial conveying
- Hoses and seals — General-purpose applications not involving oils or fuels
- Shoe soles — Common in budget and mid-range footwear
- Vibration dampening pads — Under machinery, HVAC units, and industrial equipment
SBR Rubber FAQ
Is SBR rubber safe for indoor use?
Yes. Recycled SBR rubber matting meets EU and UK safety standards for indoor use. While fresh SBR can have a slight rubber smell (off-gassing), this dissipates within days of installation and is not considered harmful at flooring-level concentrations under normal ventilation.
Is recycled SBR rubber as good as virgin SBR?
For most flooring applications, yes. Recycled SBR gym tiles and matting perform comparably to virgin SBR in abrasion resistance and durability. Virgin SBR may offer slightly more consistent density and surface texture, but the difference is negligible for most end users.
Can SBR rubber be used outdoors?
SBR has poor UV and ozone resistance, so it will degrade faster outdoors than EPDM rubber. For outdoor rubber matting or playground surfaces, EPDM or EPDM-coated tiles are the better choice.
🛒 Shop SBR Rubber Products
Browse our SBR rubber matting and sheeting range, with free UK delivery:
- → Rubber Matting UK — SBR rolls and mats for commercial and industrial use
- → Rubber Sheet — SBR, EPDM and nitrile rubber sheet by the metre
- → Rubber Sheeting UK — cut to size rubber sheeting, 10m rolls available
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James Ashworth
Head of Flooring Specifications, Rubberco
James has 18 years of experience in commercial rubber flooring and was formerly a technical adviser to the British Contract Flooring Association (BCFA). He specialises in HSE compliance, gym flooring specification and industrial rubber matting. Read James's full profile →
SBR Rubber in 2026: Key Developments and Buying Considerations
Last updated: May 2026
SBR rubber remains the dominant material in the UK rubber flooring market in 2026, but several developments are worth noting for buyers:
- Recycled content percentages: Increasingly, UK buyers and specifiers are asking about recycled content percentages for sustainability reporting. Most commercial SBR rubber flooring products contain 70–100% recycled rubber content (from end-of-life tyres). Look for products with certified recycled content if this is relevant to your procurement or ESG requirements.
- Off-gassing standards: Indoor air quality is a growing concern. SBR rubber products for indoor use should ideally carry FloorScore, GreenGuard, or equivalent VOC emission certification. Fresh SBR can emit a mild rubber odour for 1–7 days after installation, which dissipates completely with adequate ventilation.
- Crumb rubber regulations: Following EU REACH regulation updates, the use of crumb rubber (recycled tyre rubber) in some applications (notably children's play surfaces) is subject to evolving restrictions on PAH (polycyclic aromatic hydrocarbon) content. SBR rubber for flooring applications remains unaffected, but specify REACH-compliant products for any child-contact use.
- Thickness innovations: 2025–2026 has seen SBR gym tiles increasingly available in 20mm and 22mm thicknesses as standard (previously only available in niche thicknesses), meeting the demands of heavier free weights areas in commercial gyms.
What does the vulcanisation process do to SBR rubber?
Vulcanisation is the chemical process that transforms raw SBR rubber (which is sticky and weak) into the durable, elastic material used in flooring. The rubber is heated with sulphur, which creates cross-links between the polymer chains. These cross-links give SBR rubber its characteristic strength, elasticity, abrasion resistance, and dimensional stability. Without vulcanisation, SBR would deform permanently under pressure and lack the durability needed for flooring applications.
Can SBR rubber be recycled again at end of life?
Technically yes, but practically challenging. SBR rubber flooring products (which are often already made from recycled tyres) can in principle be ground back into crumb rubber for further use. However, collection and recycling infrastructure for rubber flooring offcuts and end-of-life products is limited in the UK. Some specialist rubber recyclers will collect large volumes. For small quantities, rubber flooring can generally go to general waste or skip hire — it does not contain hazardous materials and is accepted at most UK waste facilities.
Is SBR rubber suitable for use under heavy gym equipment?
Yes — SBR rubber is the standard recommendation for under heavy gym equipment in the UK. Its high density and abrasion resistance make it ideal for beneath squat racks, deadlift platforms, and weight storage systems. For dead-drop zones where heavy barbells are dropped from height, 15mm minimum is recommended; for extreme heavy use (competitive powerlifting, strongman training), consider 20–25mm SBR or a dual-layer system. SBR's vibration absorption also helps protect subflooring and reduces noise transmission to lower floors.
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Frequently Asked Questions
Is SBR rubber safe for indoor use?
Yes. Recycled SBR rubber matting meets EU and UK safety standards for indoor use. While fresh SBR can have a slight rubber smell (off-gassing), this dissipates within days of installation and is not considered harmful at flooring-level concentrations under normal ventilation.
Is recycled SBR rubber as good as virgin SBR?
For most flooring applications, yes. Recycled SBR gym tiles and matting perform comparably to virgin SBR in abrasion resistance and durability. Virgin SBR may offer slightly more consistent density and surface texture, but the difference is negligible for most end users.
Can SBR rubber be used outdoors?
SBR has poor UV and ozone resistance, so it will degrade faster outdoors than EPDM rubber. For outdoor rubber matting or playground surfaces, EPDM or EPDM-coated tiles are the better choice.
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