Full UK Range — IP54 to ATEX Certified
The UK's most comprehensive GRP enclosure range. From compact single-door cabinets to walk-in substation kiosks — including ATEX Zone 1 & 2 certified GRP for hazardous area applications that most UK suppliers simply cannot supply. UK stock. Expert technical advice. 50+ years supplying British industry.
Same-day response · No obligation
A GRP enclosure (Glass Reinforced Plastic, also known as fibreglass or FRP) is a protective housing manufactured from a composite material combining polyester resin with woven glass fibre reinforcement. The result is a housing that is stronger than steel by weight, completely non-conductive, corrosion-resistant in virtually any environment, and maintenance-free throughout a service life typically exceeding 25–30 years.
Unlike steel enclosures, GRP requires no painting, no rust treatment and no corrosion inhibitors. Unlike polycarbonate, it can be manufactured in large structural sizes and withstand significant mechanical loads. It is the preferred material for outdoor electrical installations, utility infrastructure, coastal environments, chemical processing, and increasingly, EV charging and renewable energy applications across the UK.
The Enclosure Company has supplied GRP enclosures to UK with over 50 years of enclosure experience — from compact metering cabinets to bespoke walk-in substation kiosks, and including ATEX Zone 1 & 2 certified GRP for the most demanding hazardous area applications.
Standard sizes in stock. Bespoke manufactured to your specification. ATEX certified options available across all categories.
Compact to mid-size single-door GRP enclosures for wall-mounted and post-mounted applications. Available in a wide range of dimensions from small instrument housings to full distribution board cabinets.
Double-door GRP kiosks for distribution boards, meter installations and control panel housings. Available with 100mm flange base mounting as standard. Suitable for DNO, IDNO and utility applications.
Large-format walk-in GRP kiosks for substations, RMU installations, battery storage systems and major infrastructure projects. Single and double-skin construction. Custom internal layouts available.
GRP enclosures certified to ATEX Directive 2014/34/EU for Zone 1 and Zone 2 hazardous area applications. IECEx approved for international projects. Used offshore, in chemical, pharmaceutical and renewable energy installations.
IP66 GRP enclosures for EV charging infrastructure, solar farm installations, wind turbine control systems and battery energy storage (BESS). UV-stabilised, IK10 vandal-resistant options available for public-facing applications.
GRP enclosures manufactured to your exact specification — any size, any colour (RAL matched), custom cable entry positions, ventilation arrangements, internal backboards and accessories. ATEX certification available on bespoke items.
How GRP compares to the two most common alternative enclosure materials across the key selection criteria:
| Property | GRP | Steel | Polycarbonate |
|---|---|---|---|
| Corrosion Resistance | ✓ Excellent | Requires treatment | ✓ Good |
| Non-Conductive | ✓ Yes | No | ✓ Yes |
| UV Resistance | ✓ Excellent | Painted only | Moderate |
| Large Format Sizes | ✓ Walk-in kiosks | ✓ Yes | Limited |
| ATEX Certification | ✓ Available | ✓ Available | Limited |
| Weight | ✓ Lightweight | Heavy | ✓ Lightweight |
| Coastal Environments | ✓ Ideal | Requires 316L or coating | ✓ Good |
| Maintenance Required | ✓ None | Repainting, rust treatment | ✓ Minimal |
Most UK GRP enclosure suppliers only offer standard industrial GRP cabinets. The Enclosure Company goes further — supplying ATEX Zone 1 and Zone 2 certified GRP enclosures for the most demanding hazardous area installations, including offshore oil and gas, onshore petrochemical, pharmaceutical manufacturing, and increasingly, hydrogen energy infrastructure.
Need ATEX GRP advice? Our technical team can advise on Zone classification, certification requirements, material selection and IP rating combinations for your specific hazardous area installation. Call 0203 743 0700 or request a technical consultation.
All GRP enclosures are rated to BS EN 60529. Select the right IP rating for your environment and application.
From DNO substations to offshore platforms — GRP enclosures from The Enclosure Company serve applications across every UK industry sector.
IP66 and IK10-rated GRP housing for EV charge points, rapid charger distribution boards and EVSE metering. UV-stabilised for permanent outdoor installation.
GRP for solar farm combiner boxes, string inverter housing, and battery energy storage system (BESS) electrical distribution. Ground-mount and rooftop applications.
The specification choice for DNO and IDNO metering enclosures, feeder pillars, service termination points and street furniture electrical housing across UK networks.
ATEX Zone 1 & 2 certified GRP for offshore platforms, onshore wellheads, compressor stations and petrochemical process plant. IECEx approved for international projects.
GRP kiosks and cabinets for water treatment plants, pumping stations, flow control installations and wastewater management infrastructure throughout the UK water sector.
Traffic management, smart city, CCTV, rail trackside and communications infrastructure — GRP provides the weatherproofing, vandal resistance and longevity these applications demand.
GRP is the material of choice for coastal, harbour, and marine installations where steel would corrode rapidly. Non-magnetic, non-conductive, and completely salt-resistant.
GRP enclosures for chemical processing, pharmaceutical manufacturing and ATEX Zone 21/22 dust applications. Chemical resistance to a wide range of industrial compounds.
Standard catalogue doesn't fit your project? No problem. The Enclosure Company manufactures bespoke GRP enclosures to any specification — any size, any colour, any configuration, with ATEX certification available.
What to include in your enquiry:
Get a free, no-obligation quote from our GRP specialists. Same-day response on standard enquiries, same-day quote on bespoke GRP. UK technical team. No overseas call centres.
