Appendix B: Standards referred to

BS EN ISO 13370 Thermal performance of buildings - Heat transfer via the ground - Calculation methods [2007 incorporating corrigendum March 2009]. BS EN 14351-1 Windows and doors - Product standard, performance characteristics. Windows and external pedestrian doorsets without resistance to fire and/or smoke leakage characteristics [2006 (+AMD 1:2010)].  

    • Table 1 Planning Use Classes Table 1 Planning Use Classes
    • Table 2 Opening areas in the extension Table 2 Opening areas in the extension
    • Table 3 Standards for controlled fittings Table 3 Standards for controlled fittings
    • Table 4 Standards for new thermal elements Table 4 Standards for new thermal elements
    • Table 5 Upgrading retained thermal elements Table 5 Upgrading retained thermal elements
    • Table 6 Improvements that in ordinary circumstances are practical and economically feasible Table 6 Improvements that in ordinary circumstances are practical and economically feasible