Buildings' energy efficiency
Italian legislative decree no. 311/2007 contains a set of standards designed to improve the energy efficiency of new or renovated buildings in line with European directives demanding a 20% cut in pollution by 2020. It defines the heat loss through the outer walls (U thermal transmittance) aimed at improving the thermal insulation of walls and reducing energy loss.
Legislative decree no. 311 also established the Energy Certificate, a document drawn up by an accredited certifier that states the energy performance of a building. If a building has an Energy Certificate, the owner can benefit from:
• tax incentives for improvements carried out to save energy
• tax relief for renovation work to preserve Italy’s architectural heritage
Ventilated facade respond to all of these objectives perfectly; a simple yet effective solution to ensure compliance with the new energy standards, both for new or renovated buildings. Provided the correct thickness of insulation is used, this technology guarantees a substantial cut in the amount of heat lost outside and a significant reduction in fuel consumption compared to consumption prior to legislative decree no. 311, leading to less pollution released into the atmosphere.
Smart design of the outer skin also has to take the summer into account, as a significant proportion of the energy a building consumes is used to keep it cool with air-conditioners. Therefore, it is vital to fit a system of thermal insulation with good thermal inertia so that the heat from the outside can only enter the building when the outside temperature has cooled down. Again, ventilated walls are the best and most effective answer for the purpose.