Authoritative sources supporting the information in this article.
British Standards Institution (2017). BS EN ISO 10077-1:2017 Thermal performance of windows, doors and shutters. Calculation of thermal transmittance. General. BSI Knowledge.Open source
This is the primary British Standard for assessing the thermal performance of windows and glass, essential for any energy savings calculator methodology.
Department for Levelling Up, Housing and Communities (2021). Approved Document L1B: Conservation of fuel and power in existing dwellings. HM Government.Open source
Provides the statutory requirements for thermal efficiency (U-values) in existing dwellings, which informs the baseline for energy savings calculations.
Historic England (2017). Traditional Windows: Their Care, Repair and Upgrading. Historic England Publishing.Open source
Offers authoritative data on the thermal performance of traditional windows and the measured impact of secondary glazing on heat loss in heritage contexts.
Building Research Establishment (BRE) (2022). Standard Assessment Procedure (SAP 10.2) for the Energy Rating of Dwellings. BRE Group.Open source
The official UK government methodology for calculating the energy performance of dwellings, crucial for validating any energy savings estimator.
Glass and Glazing Federation (GGF) (2020). The Energy Efficiency of Windows: A Guide to Energy Rated Windows and the Benefits of Secondary Glazing. GGF Technical Publications.Open source
An industry-standard guide providing empirical data on how secondary glazing improves thermal insulation and reduces carbon emissions.
