Carbon neutral offices for our own studio
Treglown Court in Cardiff, built for Stride Treglown’s own use, was the first office building in the UK to achieve a BREEAM Outstanding score, the highest ever, at 89.12%. It provides 500sqm of offices for over 50 employees. It subsequently achieved a BREEAM score of 85.33% on completion. The building became Carbon Neutral with an EPC of zero following the installation of additional PV’s, benefitting from the first tranche of Government Feed in Tariffs. We then applied for the Renewable Heat Incentive and now receive payments against our consumption.
Key sustainable features include:
- 106sqm mono-crystalline photovoltaic array on the roof and south facade
- A wood pellet 50kW biomass boiler, supplemented by a high efficiency 18kW domestic gas-fired boiler
- A highly efficient timber building envelope achieving a U Value of 0.11W/m2 degC utilising a Structurally Insulated Panel System (SIPS)
- Natural ventilation using a stack system
- Grey water recycling to flush WCs and all sanitary fittings are very low flow
- All major building elements are BRE Green Guide A and A+ rated
- A Building Management System controls the natural ventilation system and lighting, which is sensor controlled and zoned
- SUDS and a ‘Nature’ roof to attenuate rainwater run-off
Since its completion we have monitored its energy consumption to check that the offices were achieving the Carbon Neutral status the design was based on. The results have been very informative. They show how a combination of high insulation levels for the fabric combined with technological measures internally can prove very efficient. The building maintains a stable quality working environment. Temperatures in the summer generally vary between 21 and 26 oC during a 24 hour cycle, assisted by night time purging. During winter temperatures vary between 20 and 24oC.
Treglown court was officially opened on 13th January 2011 by Jane Davidson AM, Minister for Environment, Sustainability and Housing.