Armco barriers — corrugated beam crash barriers or W-beam guardrails — are a staple of UK road safety and industrial safety. Used on highways, car parks, warehouses, and private roads, they provide robust vehicle containment at a cost-effective price. This 2025 guide covers per-metre pricing and includes a full bill of materials for a 50-metre installation.
Armco Barrier Cost Summary — 2025 UK Price Table
| Component | Unit Cost (Supply Only) | Notes |
|---|---|---|
| Armco beam rail (per metre) | £18–£35/m | Standard W-beam; highway-grade at higher end |
| Steel post (intermediate) | £25–£60 each | Driven or bolt-down; C-section or circular |
| Steel post (corner/terminal) | £35–£80 each | Heavier section |
| End cap / softnose terminal | £80–£250 each | Safety terminal; BS EN 1317-4 compliant for highway |
| Spacer block | £8–£15 each | Sets beam height; one per post |
| Bolts and fixings (per post) | £5–£12 | Galvanised M16 coachbolts |
| Installation labour (per metre) | £25–£60/m | Varies by access, ground, and traffic management |
| Total installed (supply + install) | £65–£145/m | Typical range for straightforward sites |
Highway Grade vs Industrial Grade Armco
- Highway-grade (BS EN 1317-2 compliant): Heavier section, tighter tolerances, certified for adoption onto public highways; priced at £25–£35/m
- Industrial-grade: Lighter section, suitable for warehouses, car parks, and private roads; priced at £18–£25/m
Always specify highway-grade on any road that could be adopted or where the highway authority specifies. Using industrial-grade on a public highway is a compliance risk.
Galvanising and Powder Coating
Standard Armco is hot-dip galvanised to BS EN ISO 1461 (minimum 45 microns zinc coating), providing 20–40 years corrosion protection. Powder coating over galvanising adds £3–£8/m for standard colours (RAL 5012 blue, RAL 6018 yellow-green, RAL 9005 black are common).
End Terminals: Safety-Critical Component
The end terminal is one of the most safety-critical components. A poorly installed or missing terminal can result in the cut beam acting as a ramp or spear in a collision. Options:
- Flared/turned-down end: Beam flared away from traffic (£80–£120)
- Safety end terminal (softnose): Designed to deform and absorb energy on impact; BS EN 1317-4 compliant (£150–£250)
- Crash cushion: For layouts where a safe run-out is impossible (£500–£3,000+)
Full Bill of Materials: 50-Metre Armco Barrier Run
Worked example for a 50-metre highway-grade Armco barrier, straight run, driven posts at 2m centres, safety terminals at both ends:
| Item | Quantity | Unit Cost | Total |
|---|---|---|---|
| Armco W-beam rail (4m lengths) | 13 lengths | £112/length | £1,456 |
| Intermediate C-section posts (1.8m) | 24 | £45 each | £1,080 |
| Corner/terminal posts (2.4m heavy) | 4 | £75 each | £300 |
| Spacer blocks | 28 | £12 each | £336 |
| Safety end terminals | 2 | £200 each | £400 |
| Bolts and fixings | 28 sets | £10/set | £280 |
| Supply total | £3,852 | ||
| Installation labour (2 operatives, 1.5 days) | 50m | £38/m | £1,900 |
| Traffic management (if required) | 1 day | £600 | £600 |
| Post driving plant hire | 1 day | £350 | £350 |
| Total installed (50m) | £6,702 | ||
| Per metre installed | ~£134/m |
Factors Affecting Cost
- Highway vs industrial grade: Highway-grade material costs 20–40% more
- Ground conditions: Rocky ground requires pre-drilling; concrete requires bolt-down posts
- Traffic management: Live carriageway work ranges from simple coning (£300–£600/day) to full lane closures (£800–£3,000/day)
- Quantity: Ordering 500m+ attracts significantly better rates than 50m
Armco vs Concrete Barrier
| Factor | Armco (W-beam) | Concrete Barrier (New Jersey) |
|---|---|---|
| Cost per metre installed | £65–£145 | £120–£300 |
| Temporary deployment | Possible but complex | Easy — precast units |
| Impact repair | Replace damaged sections | Replace units or patch |
| Containment level | N2–H2 depending on spec | H2–H4a for higher barriers |
View our Armco range or request a project-specific quotation.