Under normal circumstances, preparing a SAP Assessment is a desk-based exercise and all the calculations will be drawn from a completed SAP Assessment checklist, including:
• Floor plans and drawings
• Details of the building’s location and orientation
• Specification for the construction of all floors, roofs and external walls
• Specification for all windows and doors within the buildings external envelope
• Details of the primary heating system e.g boiler make / model
• Details of the hot water system and insulation of cylinder and pipes
• Details of any fixed secondary heating e.g wood burning stove
• The number of standard light bulbs and the number of low energy light bulbs
• Details of any renewable technology – e.g. solar hot water or photovoltaics.