24/04/2008
Companies moving into offices at 1000 Lakeside North Harbour in Portsmouth can enjoy the benefits of an attractive and highly efficient building. Following an extensive refurbishment by owners, Highcross, 1000 Lakeside has achieved a 'Good' BREEAM rating - the most widely used environmental assessment for buildings.
When Highcross acquired the Lakeside North Harbour campus in 2005, it had the choice of refurbishing 1000 Lakeside to meet today's high specification office requirements or complete redevelopment.
Highcross technical director, Keith Woods, said the quality of the existing building made the decision to improve, not re-build an easy one:
"The building was originally constructed to very high standards and we saw an opportunity to enhance its appearance and improve its environmental performance. A significant factor in improving the energy performance of the building was the addition of the glass atrium, which has formed a double skin around 20% of the building, significantly reducing heat loss to the office elements."
Inside, Highcross has installed energy efficient lighting throughout the offices, with automatic sensing to ensure lighting is only on when needed. The building's heating and cooling systems were re-designed to reflect changing demands and new controls installed to improve efficiency. Where opportunities arose, additional thermal insulation was introduced to further improve performance.
The atrium was fundamental to the re-design of the building, providing an impressive entrance to 1000 Lakeside and creating a vibrant reception and meeting area capable of accommodating a wide range of facilities. Despite adding another 10,000 sq ft to the building's footprint, the atrium's efficiency, together with the other energy saving measures, has meant that 1000 Lakeside uses less energy now than before it was extended and refurbished.
Keith Woods adds: "We believe that the retention and refurbishment of existing buildings is highly sustainable, particularly when the original structures have been built to high standards. Non-residential buildings are responsible for around 20% of carbon emissions in the UK, so we need to look very carefully at how we can make all offices and other commercial buildings greener and more environmentally friendly. Our view is that refurbishing and improving the environmental credentials of existing buildings is a good place to start."