There are no set U-Values for compliance with Approved Document L1A for new-building residential buildings. The performance requirements for individual elements will be set by the designer, and will vary as required in order to give the desired SAP 2009 emission result.
As with new-build housing requirements, AD L2A for new buildings other than dwellings is based on carbon performance of the whole building. A calculation process has to be followed and the Simplified Building Energy Model (SBEM), developed by the Building Research Establishment (BRE), is the methodology for carrying out these calculations. Although there are area-weighted limiting U-Values, the performance requirements for individual elements will be set by the designer, and will vary as required in order to give the desired SBEM emission result.
Although an energy calculation process can be followed as per new buildings, the Regulations lay down some very specific U-Values for the building fabric and this is the most likely route that developers will follow. The U-Values will vary depending upon several factors, such as the work being carried out and the thermal performance of the existing element at the outset. Please refer to our web site section covering Building Regulations for a clear guide to the U-Value requirements.
For all our products the Key Process EMS 14001 certificate is available for download within the Sustainability and Environment part of our website. Just locate the product you desire to use and this will take you to the correct location on the website.
Insulation is necessary to reduce energy consumption, sound pollution and improve the comfort and quality of life in new or existing buildings regardless of the construction system. Environmental Quality Insulation fights global warming as it reduces greenhouse gases. Insulating your home is an ecological process. The signing of the Kyoto agreements was a major stage in collective awareness of the need to protect the environment by fighting global warming. Energy Savings Thermal insulation, by reducing heat wastage, minimises energy consumption (demand for heating) and therefore reduces the heating bill, consumption and pollution by up to 80%. Comfort in Summer and Winter Comfort in the home depends on maintaining a good inside temperature regardless of the season. Winter and summer comfort depend on very high resistant thermal insulation for all surfaces (including windows) + ventilation adapted to the season + outside blocking elements (doors, shutters) + the building’s air tightness. Acoustic Comfort In the last 25 years, noise has become one of the major sources of pollution. Humans, who cannot physiologically block out noise as they can the light by closing their eyes, have felt the need to protect themselves. Fire Protection The aim of fire protection for buildings is to save life of occupants and limit as much as possible any fire-related damages to their health. In order to achieve this objective, the following is necessary: 1.Reduce evacuation time; 2.Increase safety of evacuation conditions; 3.Reduce the quantity and opacity of smoke, gas emissions and rapid temperature increase; 4.Guarantee stability of the building, at least until its evacuation.
At Isover we take our environmental responsibility seriously. The very nature of our business is to develop insulation solutions to protect both your built environment and the natural environment. During every stage of development, from product innovation to the sourcing of raw materials through manufacture, distribution and installation, we constantly achieve improvements in our environmental impact. That is why we have developed our 3 Point Plan for environmental sustainability. This dynamic plan focuses our efforts on continuously improving the way in which our products and processes impact the natural environment and seeks to ensure that Isover and our products, when in-situ, use less materials, less energy and produce less emissions. We are proud of the successes we have already achieved, such as being the only glass mineral wool manufacturer to achieve 86% recycled content (the absolute limit) or the 20% reduction we have made in factory energy consumption, but we are committed to achieving far more.