Code for Sustainable Homes: scoring well in the energy section

considered in relation to the national building regulations. The national building regulations set minimum requirements for the energy efficiency of a building in terms of carbon dioxide emissions.

The dwelling emissions rate issue is the biggest contributor to a good score in the energy category. A total of 27 credits are available in the energy section and there are a maxi,mum of 15 credits available in the first issue. The minimum improvement over the building regulations that is awarded with one credit is a 10% improvement. The maximum of 15 credits is available for what is referred to as a “Zero Carbon Home”. In addition to reduce the regulated carbon emissions from the building with 100% over the requirements in the building regulations a number of additional requirements are put on a building to qualify for the title Zero Carbon Home. This includes a minimum standard for the Heat Loss Parameter and a requirement to prevent carbon emissions from energy used for appliances in the building. Clearly the higher reductions of carbon emissions can only be achieved when using energy generated though the use of low or zero carbon technologies. Issue 7 of the energy categories deals with low and zero carbon technologies and I will discuss this in further detail in that section.

Aside from the way energy is generated,Guest Posting the energy performance of the building envelope is by far the largest contributor to the energy efficiency of a building and the focus should therefore be directed to improving the energy performance of the building envelope. Improving the building performance is achieved through the use of materials that reduce the heat loss of a building. This means that materials with a large insulating value should be employed for the construction of roofs, walls and exposed floors. In addition windows that