Site Security & Protection

Site security and protection covers everything needed to keep a construction site, its equipment, and its materials secure from theft and protected from damage. CMT Group supplies a comprehensive range of site security and protection products including padlocks, chains, Armorgard site boxes, corex sheeting, tarpaulins, debris netting, carpet protection, protective sheeting, fencing and barriers, dustsheets, matting, and indoor protection, covering the security and protection requirements of construction sites across the UK.
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Construction sites contain high-value tools, plant, and materials that are attractive targets for theft. The cost of stolen equipment, the disruption to the programme, and the insurance implications make site security one of the most important operational investments on any active construction project. Equally, protecting finished surfaces, flooring, and installed materials from damage during subsequent trades is essential to avoiding costly rework and delays at the end of the project. CMT Group has been supplying site security and protection products to UK construction sites for over 20 years, stocking professional brands including Armorgard, SecuraSite, and JSP Safety.
- ✓ Padlocks, combination padlocks, chains, and security locks for site gates, storage, and plant
- ✓ Armorgard site boxes, vaults, and secure storage for overnight tool and equipment security
- ✓ Corex sheeting for surface protection and temporary hoarding on construction sites
- ✓ Tarpaulins and tarmac sheets for weatherproofing materials and protecting road surfaces
- ✓ Debris netting for containing materials within the site boundary and preventing falls
- ✓ Carpet protection, dustsheets, window film, and indoor protection for finished surfaces
- ✓ Fencing, barriers, and matting for access control and surface protection across the site
- ✓ Next day delivery standard. VIP 2-3 hour delivery on a dedicated vehicle also available
Padlocks and Site Security for Construction Sites
Padlocks are the most widely used security device on construction sites, securing site gates, Armorgard and site storage boxes, plant and machinery, fuel stores, and temporary fencing. CMT Group stocks a comprehensive range of padlocks including combination padlocks, keyed padlocks, closed shackle padlocks, and long shackle padlocks in a range of body sizes and shackle diameters suited to different security applications on site.
The security level of a padlock is determined by the body construction, shackle material and diameter, and the locking mechanism. A standard open shackle padlock provides basic security suitable for low-risk storage applications. A closed shackle padlock, where the shackle is almost entirely concealed within the body, significantly reduces the ability to attack the shackle with bolt croppers or an angle grinder and is the appropriate specification for overnight tool storage and site gate security. Combination padlocks eliminate the need for key management on sites with multiple workers needing access to the same stores. Heavy security chains combined with a quality closed shackle padlock provide the highest level of site gate and plant security available without installing a permanent lock.
Site Security and Protection by Type
Our range covers the security and protection products needed across all stages of a construction project.
Choosing the Right Site Security and Protection
Site security and protection requirements change throughout the project. At site setup, the priorities are perimeter security, tool storage, and gate security. During construction, surface protection for finished areas becomes increasingly important as trades complete their work ahead of others. At fit-out and finishing, internal protection for flooring, walls, and installed fittings is essential to preventing damage that would require costly rework before handover.
For padlock selection, the security level must be matched to the risk. Combination padlocks are convenient for low-risk applications and situations requiring keyless access for multiple workers. Closed shackle padlocks are the correct specification for tool storage overnight and site gate security, as the concealed shackle makes them significantly more resistant to attack than open shackle padlocks. Always pair a high-quality padlock with a matching heavy duty hasp and staple or security chain to avoid the padlock being the strongest element in a chain secured to a weak fitting.
| Application | Product | Key consideration |
|---|---|---|
| Site gate security | Closed shackle padlock and security chain | Closed shackle resists bolt cropper attack |
| Tool and equipment overnight storage | Armorgard site box and closed shackle padlock | Steel box rated for tool theft resistance |
| Shared access with multiple workers | Combination padlock | Keyless access; change code when workers leave site |
| Finished floor protection during fit-out | Corex sheeting or indoor protection boards | Rigid board for hard floors; film for carpet |
| Scaffolding debris containment | Debris netting | Mesh size and weight to suit scaffolding type |
| Weatherproofing materials on site | Heavy duty tarpaulin | Weight and size to suit the area to be covered |
| Site entrance mud and trackout control | Trackout matting | Highways Act obligation to prevent road contamination |
Site Security and Protection Supplied Across the UK
Construction site theft is a significant and growing problem across the UK, with the ABI estimating that plant and tool theft costs the construction industry over £800 million per year. High-quality padlocks, security chains, and Armorgard site storage boxes are the most effective and cost-efficient deterrents for the majority of construction sites. They do not eliminate the risk of theft entirely, but they significantly increase the time and effort required for forced entry, which is the most effective deterrent against opportunistic theft.
CMT Group has been supplying site security and protection products to UK construction sites for over 20 years. Our range covers the full scope of security and protection requirements from padlocks, chains, and Armorgard site boxes through to corex sheeting, debris netting, tarpaulins, carpet protection, and indoor protection. We operate our own fleet of 100+ FORS Gold accredited vehicles covering 90% of the UK, with next day delivery standard on orders placed by 5pm by phone or 7pm online, and VIP 2-3 hour delivery on a dedicated vehicle dispatched within 30 minutes for urgent site requirements.
Frequently asked questions
What is the difference between an open shackle and a closed shackle padlock?
An open shackle padlock has a U-shaped shackle that projects above the body of the lock, leaving a significant length of shackle exposed. This exposed shackle can be attacked with bolt croppers or an angle grinder. An open shackle padlock provides basic security and is appropriate for lower-risk applications such as securing toolboxes inside a site compound or locking internal storage areas. A closed shackle padlock has a much shorter shackle that is almost entirely recessed within the body of the lock when closed, leaving very little material exposed for an attacker to grip or cut. Closed shackle padlocks are significantly more resistant to bolt cropper attack and are the correct specification for site gates, Armorgard boxes, and overnight tool storage. For the highest risk applications, pair a closed shackle padlock with a hardened security chain.
What is a combination padlock and when should I use one?
A combination padlock uses a rotary or push-button code rather than a key to open. This eliminates the need for key management on sites where multiple workers need access to the same store or compound throughout the day. Combination padlocks are particularly useful for site gates accessed by multiple trades, shared welfare facility locks, and storage areas accessed by different workers at different times. The code can be changed when a worker leaves the site, which is a significant advantage over keyed padlocks where lost or retained keys create a security vulnerability. For highest security on combination padlocks, choose a model with at least four digits and avoid simple codes that can be guessed. Combination padlocks typically offer slightly lower physical attack resistance than equivalent keyed padlocks of the same body size.
What is corex sheeting used for on a construction site?
Corex sheeting is a corrugated polypropylene board used on construction sites to protect finished and semi-finished surfaces from damage caused by foot traffic, dropped materials, and equipment movement. It is placed over floors, stairs, worktops, and other surfaces that have been completed ahead of subsequent trades that would otherwise damage them. Corex is lightweight, rigid, and durable enough to withstand repeated use, and it can be cut to size easily on site. It is also widely used as temporary hoarding material for lightweight partitioning and surface protection in refurbishment projects. Corex sheeting is available in various thicknesses, with thicker boards providing better protection against heavier foot traffic and dropped tools.
Do I need debris netting on scaffolding?
Debris netting on scaffolding is required wherever there is a risk of materials or debris falling from the working platform and striking people below or beyond the site boundary. Under the Work at Height Regulations 2005 and CDM Regulations 2015, duty holders must take appropriate measures to prevent materials from falling where this would create a risk to workers or the public. In practice, debris netting is considered best practice on most scaffold structures in urban environments or anywhere the public or other workers could be struck by falling materials. It also helps contain dust and small debris within the site boundary, reducing nuisance to neighbours and complying with local authority requirements.
Why do I need trackout matting at a site entrance?
Trackout matting at site entrances and exits is used to clean mud, concrete, and debris from vehicle tyres and footwear before they leave the site and contaminate public roads and footpaths. Under the Highways Act 1980, it is an offence to allow mud and debris to be deposited on a public highway from a construction site. Trackout matting significantly reduces the amount of material carried onto the road on vehicle tyres, reducing the risk of highway contamination offences, reducing complaints from local residents, and reducing the costs associated with road cleaning. For sites with heavy vehicle movements in wet conditions, trackout matting combined with a wheel wash facility provides the most effective solution.
Armorgard Site Box vs Standard Toolbox: What Is the Difference?
A standard toolbox is a portable, lockable container for storing and transporting tools to the point of work during the day. Most toolboxes are made from plastic or lightweight steel and are secured with a simple hasp and a padlock. They provide convenient daytime storage but are not designed to resist forced entry and should not be relied upon for overnight security of high-value tools on a construction site.
An Armorgard site box is a heavy-gauge steel security vault engineered specifically for overnight storage of tools and equipment in an exposed site environment. Armorgard boxes are manufactured with reinforced corners and edges, anti-jemmy flanges that prevent a crowbar or pry bar from being inserted at the lid joint, reinforced piano hinges welded to the body, and hardened steel padlock hasps designed to accept closed shackle padlocks. The combination of a quality Armorgard box and a closed shackle padlock provides the highest practical level of tool security available on a construction site without a permanent lockable room. For a site where expensive power tools, laser levels, and specialist equipment are left overnight, an Armorgard site box is not optional: it is essential.
Shop Site Security and Protection by Type
Site Security & Protection

Site security and protection covers everything needed to keep a construction site, its equipment, and its materials secure from theft and protected from damage. CMT Group supplies a comprehensive range of site security and protection products including padlocks, chains, Armorgard site boxes, corex sheeting, tarpaulins, debris netting, carpet protection, protective sheeting, fencing and barriers, dustsheets, matting, and indoor protection, covering the security and protection requirements of construction sites across the UK.
Read more Read less
Construction sites contain high-value tools, plant, and materials that are attractive targets for theft. The cost of stolen equipment, the disruption to the programme, and the insurance implications make site security one of the most important operational investments on any active construction project. Equally, protecting finished surfaces, flooring, and installed materials from damage during subsequent trades is essential to avoiding costly rework and delays at the end of the project. CMT Group has been supplying site security and protection products to UK construction sites for over 20 years, stocking professional brands including Armorgard, SecuraSite, and JSP Safety.
- ✓ Padlocks, combination padlocks, chains, and security locks for site gates, storage, and plant
- ✓ Armorgard site boxes, vaults, and secure storage for overnight tool and equipment security
- ✓ Corex sheeting for surface protection and temporary hoarding on construction sites
- ✓ Tarpaulins and tarmac sheets for weatherproofing materials and protecting road surfaces
- ✓ Debris netting for containing materials within the site boundary and preventing falls
- ✓ Carpet protection, dustsheets, window film, and indoor protection for finished surfaces
- ✓ Fencing, barriers, and matting for access control and surface protection across the site
- ✓ Next day delivery standard. VIP 2-3 hour delivery on a dedicated vehicle also available
Padlocks and Site Security for Construction Sites
Padlocks are the most widely used security device on construction sites, securing site gates, Armorgard and site storage boxes, plant and machinery, fuel stores, and temporary fencing. CMT Group stocks a comprehensive range of padlocks including combination padlocks, keyed padlocks, closed shackle padlocks, and long shackle padlocks in a range of body sizes and shackle diameters suited to different security applications on site.
The security level of a padlock is determined by the body construction, shackle material and diameter, and the locking mechanism. A standard open shackle padlock provides basic security suitable for low-risk storage applications. A closed shackle padlock, where the shackle is almost entirely concealed within the body, significantly reduces the ability to attack the shackle with bolt croppers or an angle grinder and is the appropriate specification for overnight tool storage and site gate security. Combination padlocks eliminate the need for key management on sites with multiple workers needing access to the same stores. Heavy security chains combined with a quality closed shackle padlock provide the highest level of site gate and plant security available without installing a permanent lock.
Site Security and Protection by Type
Our range covers the security and protection products needed across all stages of a construction project.
Choosing the Right Site Security and Protection
Site security and protection requirements change throughout the project. At site setup, the priorities are perimeter security, tool storage, and gate security. During construction, surface protection for finished areas becomes increasingly important as trades complete their work ahead of others. At fit-out and finishing, internal protection for flooring, walls, and installed fittings is essential to preventing damage that would require costly rework before handover.
For padlock selection, the security level must be matched to the risk. Combination padlocks are convenient for low-risk applications and situations requiring keyless access for multiple workers. Closed shackle padlocks are the correct specification for tool storage overnight and site gate security, as the concealed shackle makes them significantly more resistant to attack than open shackle padlocks. Always pair a high-quality padlock with a matching heavy duty hasp and staple or security chain to avoid the padlock being the strongest element in a chain secured to a weak fitting.
| Application | Product | Key consideration |
|---|---|---|
| Site gate security | Closed shackle padlock and security chain | Closed shackle resists bolt cropper attack |
| Tool and equipment overnight storage | Armorgard site box and closed shackle padlock | Steel box rated for tool theft resistance |
| Shared access with multiple workers | Combination padlock | Keyless access; change code when workers leave site |
| Finished floor protection during fit-out | Corex sheeting or indoor protection boards | Rigid board for hard floors; film for carpet |
| Scaffolding debris containment | Debris netting | Mesh size and weight to suit scaffolding type |
| Weatherproofing materials on site | Heavy duty tarpaulin | Weight and size to suit the area to be covered |
| Site entrance mud and trackout control | Trackout matting | Highways Act obligation to prevent road contamination |
Site Security and Protection Supplied Across the UK
Construction site theft is a significant and growing problem across the UK, with the ABI estimating that plant and tool theft costs the construction industry over £800 million per year. High-quality padlocks, security chains, and Armorgard site storage boxes are the most effective and cost-efficient deterrents for the majority of construction sites. They do not eliminate the risk of theft entirely, but they significantly increase the time and effort required for forced entry, which is the most effective deterrent against opportunistic theft.
CMT Group has been supplying site security and protection products to UK construction sites for over 20 years. Our range covers the full scope of security and protection requirements from padlocks, chains, and Armorgard site boxes through to corex sheeting, debris netting, tarpaulins, carpet protection, and indoor protection. We operate our own fleet of 100+ FORS Gold accredited vehicles covering 90% of the UK, with next day delivery standard on orders placed by 5pm by phone or 7pm online, and VIP 2-3 hour delivery on a dedicated vehicle dispatched within 30 minutes for urgent site requirements.
Frequently asked questions
What is the difference between an open shackle and a closed shackle padlock?
An open shackle padlock has a U-shaped shackle that projects above the body of the lock, leaving a significant length of shackle exposed. This exposed shackle can be attacked with bolt croppers or an angle grinder. An open shackle padlock provides basic security and is appropriate for lower-risk applications such as securing toolboxes inside a site compound or locking internal storage areas. A closed shackle padlock has a much shorter shackle that is almost entirely recessed within the body of the lock when closed, leaving very little material exposed for an attacker to grip or cut. Closed shackle padlocks are significantly more resistant to bolt cropper attack and are the correct specification for site gates, Armorgard boxes, and overnight tool storage. For the highest risk applications, pair a closed shackle padlock with a hardened security chain.
What is a combination padlock and when should I use one?
A combination padlock uses a rotary or push-button code rather than a key to open. This eliminates the need for key management on sites where multiple workers need access to the same store or compound throughout the day. Combination padlocks are particularly useful for site gates accessed by multiple trades, shared welfare facility locks, and storage areas accessed by different workers at different times. The code can be changed when a worker leaves the site, which is a significant advantage over keyed padlocks where lost or retained keys create a security vulnerability. For highest security on combination padlocks, choose a model with at least four digits and avoid simple codes that can be guessed. Combination padlocks typically offer slightly lower physical attack resistance than equivalent keyed padlocks of the same body size.
What is corex sheeting used for on a construction site?
Corex sheeting is a corrugated polypropylene board used on construction sites to protect finished and semi-finished surfaces from damage caused by foot traffic, dropped materials, and equipment movement. It is placed over floors, stairs, worktops, and other surfaces that have been completed ahead of subsequent trades that would otherwise damage them. Corex is lightweight, rigid, and durable enough to withstand repeated use, and it can be cut to size easily on site. It is also widely used as temporary hoarding material for lightweight partitioning and surface protection in refurbishment projects. Corex sheeting is available in various thicknesses, with thicker boards providing better protection against heavier foot traffic and dropped tools.
Do I need debris netting on scaffolding?
Debris netting on scaffolding is required wherever there is a risk of materials or debris falling from the working platform and striking people below or beyond the site boundary. Under the Work at Height Regulations 2005 and CDM Regulations 2015, duty holders must take appropriate measures to prevent materials from falling where this would create a risk to workers or the public. In practice, debris netting is considered best practice on most scaffold structures in urban environments or anywhere the public or other workers could be struck by falling materials. It also helps contain dust and small debris within the site boundary, reducing nuisance to neighbours and complying with local authority requirements.
Why do I need trackout matting at a site entrance?
Trackout matting at site entrances and exits is used to clean mud, concrete, and debris from vehicle tyres and footwear before they leave the site and contaminate public roads and footpaths. Under the Highways Act 1980, it is an offence to allow mud and debris to be deposited on a public highway from a construction site. Trackout matting significantly reduces the amount of material carried onto the road on vehicle tyres, reducing the risk of highway contamination offences, reducing complaints from local residents, and reducing the costs associated with road cleaning. For sites with heavy vehicle movements in wet conditions, trackout matting combined with a wheel wash facility provides the most effective solution.
Armorgard Site Box vs Standard Toolbox: What Is the Difference?
A standard toolbox is a portable, lockable container for storing and transporting tools to the point of work during the day. Most toolboxes are made from plastic or lightweight steel and are secured with a simple hasp and a padlock. They provide convenient daytime storage but are not designed to resist forced entry and should not be relied upon for overnight security of high-value tools on a construction site.
An Armorgard site box is a heavy-gauge steel security vault engineered specifically for overnight storage of tools and equipment in an exposed site environment. Armorgard boxes are manufactured with reinforced corners and edges, anti-jemmy flanges that prevent a crowbar or pry bar from being inserted at the lid joint, reinforced piano hinges welded to the body, and hardened steel padlock hasps designed to accept closed shackle padlocks. The combination of a quality Armorgard box and a closed shackle padlock provides the highest practical level of tool security available on a construction site without a permanent lockable room. For a site where expensive power tools, laser levels, and specialist equipment are left overnight, an Armorgard site box is not optional: it is essential.