Case Studies

Parc Gelli Werdd – state of the art sustainable industrial units & BREEAM excellent


HAG Ltd, the Welsh Government & Carmarthenshire County Council collaborate on sustainable industrial development at Parc Gelli Werdd, achieving a BREEAM Excellent rating




Introducing our latest collaboration – Parc Gelli Werdd in South Wales, showcasing 15 Q doors – the pinnacle of resilient, superbly insulated industrial door systems.

Nestled in Parc Gelli Werdd lies a cutting-edge development of workshops, industrial units, and offices, conveniently located just an hour away from Cardiff, the vibrant capital of Wales. Engineered for adaptability, these units cater primarily to advanced manufacturing, agri-food technology, creative industries, and energy & environmental sectors. The exterior amenities include generous parking spaces, electric vehicle charging stations, a service yard, bike storage facilities, and meticulously crafted landscapes.

At the heart of this business park lies a commitment to sustainability, reflected in both its design ethos and operational practices. By embracing Active Building and Passivhaus principles, which prioritize superior insulation, our premium Q doors, renowned for their exceptional insulation properties and longevity, seamlessly align with the development’s sustainability objectives.

This endeavor, aimed at achieving ‘Net Zero carbon in-use,’ has garnered remarkable accolades, boasting an impressive BREEAM “Excellent” rating and an EPC “A” certification. BREEAM evaluates sustainability aspects encompassing energy usage, water conservation, and material selection, while the EPC rating system in the UK measures energy efficiency on a scale from A to G, considering factors such as insulation and heating efficiency. Securing both distinctions underscores the project’s commitment to sustainability and its exceptional energy-efficient design.



Q Doors boast exceptional thermal insulation capabilities, delivering long-term cost savings while enhancing both security and the architectural allure of any structure.

Functioning as a versatile bi-folding solution, Q Doors can be seamlessly installed externally to address spatial limitations, thus optimising space within appliance bays. With a plethora of customisation options available, you can tailor your Q Door to meet specific needs, including the incorporation of insulated double-glazed windows, an array of colour choices, and the flexibility of manual or electric operation.

In harmony with our sustainability objectives, we offer customisation options such as personnel doors, reducing the need to fully open the Q Door. This strategic approach not only conserves energy but also diminishes the building’s carbon footprint, aligning seamlessly with our commitment to environmental stewardship.


The Q Doors sealing system complies with top European requirements, and still met them at 3 times the required test pressure! (The top European class 3 for air leakage describes air leakage (T Value) as at best 1.5m3/m2/h at 50 Pa pressure. i.e. 1.5m3/m2/h to 150 Pa).


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Case Studies