Strategies for Integral Rehabilitation and Improvement of the Energy Efficiency of Lagos Park Building in Madrid

Today, homes are losing money thanks to inadequate energy consumption and anachronistic and often ill-advised construction systems. Spain is still far from complying with European guidelines to reduce CO2 emissions, 40% of which are caused by the energy inefficiency of buildings. This article summarises the work carried out for the comprehensive refurbishment of the Lagos Park residential building in Madrid. The present paper provides a constructive analysis of common building pathologies related to the excess of humidity in the terrains where they are located and the deficiencies in the energetic behaviour of the building envelope (façades and roofs). The necessary measures for their adaptation to the CTE compliance and their energetic and functional adaptation are explained with precision through the renovation of the building envelopes. It also includes a study of the improvement of ACS facilities and the air-conditioning system that enables the building to achieve an optimum energy rating. The major refurbishment carried out in the complex, with a comprehensive intervention, has allowed the Lagos Park homes to be practically "homes without consumption". The strategies employed, from the electrical appliances to the structure of the house, everything is designed to optimise the energy used, which is reflected in electricity bills that reduce the monthly amount by between 65% and 75%