Business Details
50 Years
experience
Trusted GRP Enclosures Manufacturer in Swansea
Envico Engineering has been a trusted leader in the design and manufacture of glass reinforced polymer (GRP) solutions since 1976. Our expertise spans electrical, gas, water, and telecommunications sectors, delivering durable, lightweight enclosures that combine mechanical strength with corrosion resistance. With two state-of-the-art facilities in Swansea and Port Talbot, we utilise advanced CAD/CAM systems and modern manufacturing techniques to produce standard and bespoke GRP housings. Our commitment to quality is evidenced by NICEIC-accredited electrical installations and partnerships with major utility providers across the UK and internationally.We prioritise innovation, having developed fire-retardant resins meeting BS476 standards and security-rated enclosures for high-risk environments. Our team's decades of experience ensure tailored solutions for substation housings, roadside cabinets, and custom enclosures with thermal/acoustic insulation options. Client satisfaction is guaranteed through rigorous quality assurance processes and a dedicated support team available for project consultation from design to nationwide installation.
Services
GRP Transformer Housings
Roadside Cabinets
Bespoke Enclosures
Electrical Fit-Out
Ventilation Solutions
Fire Retardant Resin
Custom Color Finishes
Security-Rated Enclosures
Thermal Insulation
Nationwide Installation
Details
- Year established: 1976
Highlights and features
- 45+ years manufacturing GRP enclosures for critical infrastructure
- CAD/CAM-designed products meeting UK DNO/IDNO ventilation standards
- NICEIC-accredited electrical installations for safety compliance
- On-time delivery with dedicated HiAb crane logistics support
- Port Talbot facility specialising in custom finishes and security-rated enclosures
Associations and certifications
- NICEIC
What people say
On time delivery
No build quality issues
Responsive service
Competitive pricing
Excellent engineering
Services
GRP Transformer Housings
Our GRP transformer housings provide robust protection for electrical equipment. Designed to UK DNO/IDNO standards, they feature Class 2 fire-retardant resin and explosion relief vents. Double doors with security locks ensure safe access while maintaining durability in outdoor environments.
Roadside Cabinets
Single and double-door GRP cabinets protect instrumentation and control systems. Manufactured with self-extinguishing resin, these vandal-resistant units offer ventilation options and custom internal configurations for telecoms, water, and rail sectors.
Bespoke GRP Enclosures
Tailored GRP solutions from single skin to LPCB security-rated level 4. Available with thermal insulation, brick/stone effects, and integrated electrical systems. Suitable for security booths, data rooms, and specialist industrial applications requiring non-standard dimensions.
Electrical Fit-Out
NICEIC-accredited installations include cable management systems, power distribution units, and control panel integration. Factory-fitted electrical systems reduce on-site installation time while ensuring compliance with 17th Edition wiring regulations.
Ventilation Solutions
Engineered ventilation options manage heat dissipation in electrical enclosures. Available with corrosion-resistant grilles and weatherproof louvres, meeting operational requirements for transformers and substation equipment.
Questions
What materials are used in your GRP enclosures?
We use glass reinforced polymer with Class 2 fire-retardant resin to BS476 Part 7, offering excellent mechanical strength and corrosion resistance for long-term durability.
Can you manufacture custom-sized enclosures?
Yes, our Port Talbot facility specialises in bespoke GRP solutions with flexible dimensions, security features, and finishes including brick, stone, and wood effects.
Do you provide nationwide installation?
We offer full installation services across the UK, including risk assessments, crane offloads, and traffic management for large-scale infrastructure projects.
What sectors do you serve?
We supply to electricity, gas, water, and telecommunications industries, with specialist products for rail, utilities, and construction sectors nationwide.
Are your products compliant with industry standards?
All enclosures meet UK DNO/IDNO requirements, with independent testing by the Building Research Establishment and NICEIC-accredited electrical installations.
