Impact of Insulation in Cold Regions
Energy Savings from Wall and Roof Insulation
An example demonstrating energy savings from wall and roof insulation as part of a building refurbishment project
In the following office building example, the 4th floor (the top floor, including the roof) has been considered for heating and cooling load calculations.
Location: UK / London​​​
Heat Loss Calculations (before)
Wall Construction (U=1.445 W/m² °C)
Report (before)
Energy (before)
Graph (before)
Roof Construction (U=2.148 W/m² °C)
Energy (before)
Heat Loss Calculations (after)
Wall Construction (U=0.516 W/m² °C)
Report (after)
Energy (after)
Graph (after)
Roof Construction (U=0.536 W/m² °C)
Energy (after)
SBEM, or Simplified Building Energy Model, is a UK government-approved calculation method used for assessing the energy performance and carbon emissions of non-domestic buildings (commercial properties like offices, shops, warehouses) to meet Building Regulations (Part L) and produce Energy Performance Certificates (EPCs). It evaluates factors like construction, lighting, and HVAC systems over a typical year to show compliance and identify energy-saving improvements, contrasting with SAP calculations for homes.
Complianc report
Energy report
EPC
Complianc report
Energy report
EPC