Lasting performance of Insulated Panels benefits building energy certificates – EPC/DEC
Insulated panels can maximise EPCs and DECs
Energy Performance Certificates (EPCs) for all buildings being built, sold or rented are mandatory.
An EPC remains valid for up to ten years, provided there is no alteration to the building or its fixed services. Having a good EPC rating has the potential to enhance the value of a property.
One very effective way of achieving high and maintained levels of energy efficiency is to use the most efficient and lasting envelope constructions for the roofs and walls. Insulated panels have been proven to fully meet this requirement. With a life expectancy of at least thirty years or more, whether used in a new build or a refurbishment project, these systems can provide the long term excellent thermal performance and low air leakage rates that will play a vital role in attaining a good EPC rating, as well as reducing day to day running costs.
Display Energy Certificates (DECs) are required for all public buildings with a useful floor space of over 1000m2.
The crucial difference between DECs and the Energy Performance Certificates (EPCs) is that whereas an EPC is valid for up to ten years, a DEC must be reviewed annually and is based on actual energy consumption. Public buildings ranging from council offices through to schools and hospitals have to undergo assessment and display the resulting certificate in a place clearly visible to the public.
This increased transparency on the financial and environmental costs of running a building is intended to have a noticeable effect on public opinion, thereby encouraging occupants and owners to seek ways of improving energy efficiency.
One of the most effective and consistent ways of achieving this is by having a thermally efficient building envelope. For example a 100mm thick insulated roofing panel with a PIR insulating core can readily achieve a U-value as low as 0.20 W/m2K and an air leakage rate of 5m3/hr/m2 or better. Essentially, these figures mean much less heat is lost through the roof, leading to reduced heating bills, less energy consumption and potentially a better DEC rating.
A clear benefit of having a regular update is that any improvements to the building’s thermal performance, for example, will be reflected at the next review, adding value to the refurbishment work undertaken.