Construction & Groundworks
Construction sites need reliable groundworks supplies to meet CDM and HSE standards. From steel road pins and reinforcing bar to site barrier mesh and trench covers, Cocus stocks the essentials.
Road Pins & Fencing Pins
Heavy-duty steel form pins and fencing stakes for temporary site barriers and perimeter fencing.
Shop Now
Rebar & Reinforcement
Steel reinforcing bar for concrete slabs, beams, columns, and foundations — multiple diameters available.
Shop Now
Concrete Spacers & Chairs
Plastic spacers and bar chairs to achieve correct rebar cover depth in line with BS EN 1992.
Shop Now
Site Fencing & Barrier Mesh
Perimeter barrier mesh, safety fencing, and steel pins for securing construction site boundaries.
Shop Now
Trench & Hole Covers
Load-rated board covers for open excavations, service trenches, and construction voids.
Shop Now
Asbestos & Rubble Bags
Heavy-duty printed asbestos disposal bags and rubble sacks for safe removal of hazardous materials.
Shop NowRegulatory Requirements
- CDM Regulations 2015 require all construction sites to maintain secure perimeters and manage hazardous materials appropriately.
- HSE guidance mandates physical barriers or load-rated covers around all open trenches and excavations where there is a risk of falls.
- Asbestos waste must be double-bagged in printed approved bags and consigned to a licensed facility under the Control of Asbestos Regulations 2012.
Site perimeter fencing and security
Under CDM Regulations 2015, the principal contractor must ensure the site is secured against unauthorised access. Barrier mesh and steel road pins provide a cost-effective temporary perimeter that can be repositioned as work progresses. For a more robust installation, combine fencing pins with high-tensile wire or purpose-built hoarding. Browse Site Fencing & Barrier Mesh for complete kits.
Rebar and concrete spacers: getting cover depth right
Insufficient concrete cover over reinforcing bar is a leading cause of structural corrosion and failure. BS EN 1992-1-1 (Eurocode 2) specifies minimum cover depths by exposure class — from 20mm for internal dry conditions to 40mm for external and coastal environments. Plastic spacers and bar chairs hold rebar at the correct standoff from formwork throughout the pour. Our Concrete Spacers & Chairs range covers flat base, block type, and high chair configurations for slabs, beams, and walls.
Managing excavations and open trenches safely
Work at Height Regulations 2005 and CDM Regulations 2015 both require that all excavations are properly guarded when work is not active. Rated trench cover boards allow pedestrian and vehicle traffic to continue safely over open service trenches. See our Trench & Hole Covers for load-rated options.
Frequently Asked Questions
What road pins do I need for temporary barrier mesh fencing?
Standard barrier mesh uses 1m or 1.2m steel road pins driven into the ground at 1.5–2m intervals. Heavy-duty form pins suit hard ground. All our pins are steel and available individually or in packs.
What rebar cover depth is required for a concrete ground slab?
For a slab in a typical internal dry environment (Exposure Class XC1 under Eurocode 2), a minimum 25mm cover is normally specified. For external or exposed slabs, 40mm is typical. Always follow your structural engineer's specification.
Is site boundary fencing a legal requirement on UK construction sites?
Yes. CDM Regulations 2015 require the principal contractor to secure the site against unauthorised access at all times. Physical barriers are required around all sites and around all excavations and floor voids.
How must asbestos waste be packaged for disposal?
Asbestos waste must be double-bagged in approved printed asbestos bags, sealed, labelled, and consigned to a licensed disposal facility under the Control of Asbestos Regulations 2012. Our bags carry the required hazard warning text.