If you’ve ever driven in heavy weather conditions and found it surprisingly grippy when slowing down, you’ve driven over anti-skid surfacing. Sometimes referred to as high friction surfacing (HFS), it’s a specialist surface treatment designed to dramatically increase skid resistance. First introduced on UK roads in the 1960s, it works by bonding a tough, polish-resistant aggregate (typically calcined bauxite) to an existing surface using a high-performance resin binder.
The result is a thin layer (roughly 3-6 mm) covered in thousands of tiny, sharp contact points that give vehicle tyres and footwear far more grip than a standard tarmac or concrete surface. It’s one of the most effective road safety measures available, with studies reporting accident reductions of over 50% at treated sites. But it’s not just for roads; anti-skid surfaces are used for a variety of safety reasons.
What does “anti-skid” actually mean?
A surface is described as anti-skid when it has been engineered or treated to provide high levels of friction, preventing tyres or feet from losing traction. This is especially important in wet or icy conditions for areas of high usage or commercial areas exposed to winter weather conditions.
Are anti-slip and anti-skid the same thing?
The terms are often used interchangeably, but there’s a practical distinction between the two:
- Anti-skid typically refers to professional, aggregate-based surface treatments applied to roads, car parks, and commercial surfaces. These systems use calcined bauxite and resin binders to create a durable, high-friction finish designed for vehicle traffic.
- Anti-slip is a broader term that covers everything from textured paint and coatings to rubber mats and grip tape. Anti-slip products are commonly used in pedestrian settings – floors, decking, ramps, and stairs.
All anti-skid surfaces are anti-slip, but not all anti-slip products are anti-skid. If you’re dealing with vehicle traffic or high-risk commercial areas, you need anti-skid surfacing, not just anti-slip paint.
How anti-skid surfacing works
Anti-skid surfacing achieves its grip through two key material properties:
- Microtexture – the fine surface roughness of each aggregate particle, which creates friction at the tyre-road contact point. This is measured by the Polished Stone Value (PSV). Calcined bauxite used in HFS must have a PSV greater than 70, standard road aggregate might sit around 50-60. In contrast, marble sits around 20-30 PSV, which is why it feels like you’re ice skating when it’s wet.
- Abrasion resistance – the aggregate’s ability to retain its sharp edges under heavy traffic. Calcined bauxite has an Aggregate Abrasion Value (AAV) below 4 and a Mohs hardness of 9 out of 10 (diamond is 10). To put that in perspective, it’s harder than virtually all other natural minerals on the planet and means it wears down extremely slowly, maintaining its grip for years.
The aggregate: calcined bauxite
Calcined bauxite is aluminium ore that has been heat-treated (calcined) to create an exceptionally hard, stable material. It’s typically sourced from China or Guyana and graded to 1-3 mm particle size.
Key properties (per RSTA Code of Practice):
| Property | Requirement |
| Polished Stone Value (PSV) | > 70 |
| Aggregate Abrasion Value (AAV) | < 4 |
| Relative Density (SSD) | > 2.8 |
| Moisture Content | < 0.5% |
| Alumina content | > 82% |
These specifications are verified through the BBA/HAPAS certification scheme, which covers both the materials used and the quality of installation.
Cold applied vs hot applied
There are two methods for applying anti-skid surfacing, and the right choice depends on the site, traffic levels, and the surface’s intended use.
Cold applied (epoxy or MMA resin)
Cold-applied systems are the most common choice for commercial sites, car parks, pedestrian areas, and cycle lanes. The process is straightforward:
- The surface is cleaned and prepared.
- A liquid resin (usually epoxy or methyl methacrylate/MMA) is spread evenly using a serrated squeegee.
- Calcined bauxite aggregate is applied over the wet resin until fully covered.
- After the resin cures (typically 3-6 hours depending on temperature), excess aggregate is swept away.
Cold systems don’t require heating equipment, they offer a smoother finish, and they tend to last longer than hot-applied alternatives. For most commercial and pedestrian applications, this is the system you’ll see specified.
Hot applied (thermoplastic binder)
Hot-applied systems are primarily used on high-speed highway networks, motorway slip roads, and junction approaches where rapid curing and minimal road closure time are the priority. The aggregate and thermoplastic resin arrive pre-mixed, are heated on site, and applied via a screed box in strips. The surface can be open to traffic within 10-15 minutes, which is why it suits highway schemes where lane closures need to be kept short.
| Cold Applied | Hot Applied | |
| Binder type | Epoxy or MMA resin | Thermoplastic |
| Curing time | 3 to 6 hours | 10 to 15 minutes |
| Equipment | Squeegee, no heating needed | Specialist heating pot and screed box |
| Typical settings | Car parks, pedestrian areas, cycle lanes, commercial sites | Motorway slip roads, junction approaches, high-speed bends |
| Average service life | 8 to 12 years | 4 to 8 years |
| Finish | Smoother | Slightly coarser |
Where anti-skid surfacing is used
You’ll find anti-skid surfacing anywhere that braking, turning, or stopping creates risk. The most common applications include:
- Car parks and ramps – particularly multi-storey, covered, or sloped areas where wet tyres and smooth concrete are a bad combination
- Loading bays – where forklift and HGV traffic creates heavy wear and standing water is common
- Pedestrian crossings – near schools, hospitals, and town centres
- Cycle and bus lanes – for delineation and added safety
- Commercial and industrial yards – anywhere vehicles and pedestrians share space
- Junction and roundabout approaches – where vehicles brake sharply
- Sharp bends and fast curves – where loss of control is most likely
- Motorway slip roads – high-speed deceleration zones
- Bridges and overpasses – surfaces prone to ice and standing water
It can be applied to virtually any sound asphalt or concrete surface, as long as the existing surface is in suitable condition.
Anti-skid surfacing vs anti-alip paint and coatings
This is a question that comes up a lot, especially from people looking at solutions for driveways, decking, or small commercial areas. There are three broad categories worth knowing about.
Anti-skid surfacing (resin + aggregate systems) is the professional-grade option. Calcined bauxite aggregate bonded with epoxy, MMA, or thermoplastic resin. It lasts 5-12+ years depending on the system and traffic, and it’s the right choice for car parks, commercial sites, and any area handling vehicle traffic. The trade-off is that it requires professional installation – this isn’t a weekend DIY job.
Anti-slip paint is at the other end of the scale. It’s a pigmented coating (usually acrylic or solvent-based) with textured aggregate mixed in. Budget-friendly and easy to apply, which makes it popular for garage floors, residential paths, patios, and steps. But it only lasts 1-3 years before wearing down, and it offers minimal traction compared to a proper aggregate system. Fine for light foot traffic, not for anywhere vehicles are moving.
Anti-slip coatings (epoxy/polyurethane systems) sit in between. These are two-pack systems with aggregate built in or applied over the surface. They last 5-10 years and work well on commercial and industrial floors, loading docks, and car park decks. They cost more than paint and the application is more involved (surface prep, mixing, controlled conditions), but the durability reflects that.
What about driveways?
For domestic driveways, full anti-skid surfacing is usually more than you need. Resin-bound aggregate systems are a better fit – natural stone mixed with polyurethane resin, trowelled over a solid base. They’re permeable, decorative, and slip-resistant, and they typically last 15-25 years. For a budget option on existing concrete or tarmac, an anti-slip driveway paint with medium-grade aggregate will give you a few years of improved grip.
What about timber decking?
Decking is a different challenge. Wood gets slippery when wet, and algae and moss make it worse. Your main options are anti-slip deck paint (covers the grain, provides good grip, lasts 2-4 years), a semi-transparent stain with an anti-slip topcoat (preserves the wood-grain look), or anti-slip deck strips and inserts if you’d rather avoid coatings altogether. For new builds, decking boards with factory-fitted grip inserts are the most durable long-term choice.
How long does anti-skid surfacing last?
Industry lifespan data
The Road Surface Treatments Association (RSTA) and the British Board of Agrément (BBA) have both studied HFS durability. A BBA study of over 200 historical sites led the RSTA to revise its service life estimates upward:
| System | Earlier estimate (ADEPT/RSTA) | Revised estimate (BBA study) |
| Hot applied HFS | 3-5 years (mid-point: 4 years) | Up to 8 years average |
| Cold applied HFS | 5-11 years (mid-point: 8 years) | Up to 12 years average |
Well-prepared sites with lighter traffic can see anti-skid surfacing last in excess of 12 years, with some cold-applied systems still performing after 18-20 years.
For commercial sites like car parks, loading areas, and pedestrian zones, cold-applied systems are the standard – and their longer service life is one of the main reasons. A properly installed cold-applied system should comfortably outlast most company fleet contracts.
What affects lifespan?
Traffic volume and type is the biggest factor – heavy commercial vehicles wear surfaces faster than light car traffic. After that, surface preparation matters most. Poor prep is the single most common cause of premature failure, regardless of how good the materials are. Beyond that, material quality (BBA/HAPAS-certified systems must meet minimum durability standards), installation quality (correct resin temperatures, coverage rates, and aggregate application), and environmental conditions (frost heave, standing water, UV exposure) all play a role.
Anti-skid surfacing is generally low maintenance. Periodic inspection for loose aggregate, edge deterioration, or localised wear is recommended. Damaged areas can often be patch-repaired rather than fully replaced.
The installation process
Here’s what to expect for a typical process:
- Site survey – we assess the existing surface condition, traffic levels, and drainage to determine the most appropriate system. For most commercial and pedestrian applications, cold-applied resin systems are the standard choice.
- Surface preparation – the surface is cleaned to remove debris, oil, and contaminants. Concrete may need shotblasting for proper adhesion. The surface must be clean, dry, and structurally sound – there are no shortcuts here, because prep quality is the single biggest factor in how long the finished surface lasts.
- Priming (if required) – some surfaces need a primer coat to ensure the resin bonds securely.
- Application – for cold-applied systems, the resin binder is spread evenly and aggregate is applied over the top. Hot-applied systems follow a different process and are typically specified for highway schemes.
- Curing – cold systems typically cure in 3-6 hours (longer in low temperatures). Hot systems can be trafficked within 10-15 minutes.
- Excess removal – once cured, loose aggregate is swept away by a vacuum sweeper or by hand.
- Final inspection – the finished surface is checked for consistency, bond integrity, and coverage before handover.
Surface temperatures generally need to be above 10°C for most resin systems, and the surface must be dry. This means installation is typically scheduled between spring and autumn, though some modern MMA systems can be applied at lower temperatures.
A final thought
Not sure whether you need full anti-skid surfacing or something lighter? We’ll tell you straight. Every site is different, and the right solution depends on your surface, your traffic, and your budget. Get in touch and we’ll help you work out what actually makes sense.
FAQs
What does “anti-skid” mean?
Anti-skid means resistant to skidding. In a surfacing context, it describes a surface treated with specialist materials to provide high levels of friction, preventing vehicles or pedestrians from losing grip.
What does “no anti-skid” mean?
This usually appears as a warning light on a vehicle dashboard, meaning the car’s electronic traction control system is inactive. Nothing to do with road surfacing.
What is an anti-skid floor?
Any floor surface that has been treated or constructed to prevent slipping. In commercial and industrial settings, this usually means an epoxy or polyurethane coating with aggregate added for texture.
What is an anti-skid road surface?
A section of road treated with high friction surfacing. This is typically calcined bauxite aggregate bonded with resin – to reduce the risk of vehicles skidding. You’ll find them at junctions, roundabout approaches, pedestrian crossings, and sharp bends.
What is anti-skid paint?
A pigmented coating containing textured aggregate particles that provide a degree of slip resistance. It’s a lighter-duty alternative to full anti-skid surfacing, suitable for pedestrian areas, light traffic zones, and domestic surfaces. Typically lasts 1 to 3 years.
What is anti-slip material?
Any product designed to increase traction on a surface. from professional calcined bauxite aggregate (used in road surfacing) through to rubber grip tape, textured paints, grit additives, and non-slip mats.
Does anti-slip paint really work?
For light foot traffic, yes – it’s a noticeable improvement over a bare surface. But it wears significantly faster than professional coating systems or aggregate-based surfacing. If vehicles are involved, anti-slip paint isn’t enough.
How long does anti-slip paint last?
1-3 years in exposed outdoor areas with regular foot traffic. Higher-quality two-pack epoxy or polyurethane anti-slip coatings can last 5-10 years.
What are the different types of slip-resistant flooring?
Textured tiles and pavers, epoxy/polyurethane anti-slip coatings, resin-bound aggregate systems, high friction surfacing (HFS), anti-slip paint, rubber matting, and profiled metal or composite panels.
What can I put on concrete to make it not slippery?
For light use, an anti-slip sealer or acrylic anti-slip paint is the simplest option. For heavier use, a two-pack epoxy anti-slip coating. For driveways or areas with vehicle traffic, a resin-bound aggregate system or professional anti-skid surfacing.
What is the best anti-slip coating for driveways?
For most domestic driveways, a resin-bound aggregate system gives you the best combination of durability, appearance, and grip. On a budget, anti-slip driveway paint with medium-grade aggregate is a decent short-term option.
What is the best anti-slip coating for timber decking?
For a painted look with built-in grip, textured anti-slip deck paint is the easiest option. If you want to keep the natural wood grain, a semi-transparent stain followed by a film-forming anti-slip sealer with grit additive. For new builds, decking boards with factory-fitted anti-slip inserts.