Accessing rooftop systems safely shouldn’t be a challenge. That’s why we developed TopBox — our purpose-built roof entry kiosk designed to simplify ductwork, pipework, and cable installations in commercial buildings.

Hill Grwp Ltd manufactures compact GRP electrical kiosks, small weatherproof enclosures and larger GRP buildings for control panels, equipment and site services.

Insulation & More helps make that process easier by supplying specialist insulation products, cladding and installation materials for commercial, industrial and building-services projects throughout the UK. Operated by Hill Grwp Ltd, the business combines a wide online product range with practical industry knowledge and support for both everyday orders and larger project requirements.

Hill Grwp Ltd designs and manufactures TopBox Roof Entry Systems around each project’s requirements. Units can be configured to suit different service layouts, roof details, access needs, finishes and site installation requirements.

A GRP sprinkler kiosk does not finish when the building is positioned on site. One of the most important stages happens after the sprinkler pipework has been fitted: sealing around the pipe entries.

Hill Grwp Ltd has recently completed another split GRP sprinkler kiosk, manufactured with key project details already built into the enclosure. The unit includes steel double doors, integrated ventilation louvres, insulated roof construction and pre-formed pipe entry points to help support faster installation on site.

Hill Grwp Ltd recently completed another GRP enclosure on site, manufactured with steel double doors, ventilation louvres and a clean external finish. It is a straightforward project, but a useful example of the details that matter on weatherproof GRP kiosks and external site enclosures.

Hill Grwp Ltd recently completed the design, manufacture, delivery and installation of a bespoke GRP substation enclosure for a solar farm project, built around the practical requirements of the equipment, site layout and access strategy.

Solar farms rely on much more than solar panels. Behind the visible array, there are systems that collect, control, transform and transfer electrical power. Depending on the project, this infrastructure can include switchgear, transformers, metering equipment, control equipment, cabling and connection systems. Solar farm substations are commonly used to support this process, with electrical infrastructure playing a key role in connecting generated power to the wider netwo

Another unit complete and ready to go, this pre-packaged pump room is now awaiting collection from our facility. Fully assembled and prepared for transport, the system has been built to ensure a straightforward transition from factory to site.

Condensation in electrical enclosures is one of the most common problems we see on industrial sites. It’s silent, often unnoticed until equipment fails, and it can cost thousands in repairs, downtime, and lost productivity. Here’s what causes it and how to prevent it.

See how Hill Grwp delivered a bespoke sprinkler pump room with factory-fitted services, rapid installation and full compliance. Discover the benefits of off-site manufactured pump solutions.

Every industry has critical equipment that can’t fail - and every failure can be costly. That’s where Hill Grwp enclosures come in. Here’s how we make a difference:

A building is only as strong as its foundation. At Hill Grwp, our steel base frames provide a rigid, load-bearing foundation for prefabricated buildings, electrical kiosks, GRP substation buildings, and plant enclosures - ensuring stability, safety, and longevity.

Hill Grwp recently supplied and installed several TopBox roof entry systems on a commercial building in Abergavenny, South Wales, providing safe and fully weatherproof entry points for essential building services. Although the roof is also fitted with solar panels, the purpose of the TopBox installations was to protect pipework and electrical services entering the building, ensuring that roof penetrations were properly sealed and structurally secure.

Recent TopBox roof entry systems progressing through production, with this unit demonstrating the pipe entry configuration prior to installation.

Back to work and full of new energy as projects continue to move from production to site.

From initial design through to on-site installation, Hill Grwp delivers GRP enclosures and GRP buildings for industrial and commercial applications across the UK. This project features a GRP enclosure with integrated steel staircase, installed by our team and engineered to provide safe, durable access to critical equipment in challenging environments.

A look inside one of our completed Pre-packaged Sprinkler Pump Room, delivered fully prepared and ready for commissioning.

Take a detailed look at our TopBox GRP roof entry system. This walkthrough showcases the internal design, robust construction, and weatherproof features that make it a reliable solution for industrial and commercial sites.