The Annexe, West Dorset
project designed by Theo Green Designs Ltd
- full SAP assessment and building regulations compliance report, including advice on improvements to make to achieve building regulations approval.
- advice on appropriate sustainable materials to use
- U-value calculations of different construction options, with indicative heat-loss calculations
- discussing the impact on energy efficiency and EPC rating of different windows and levels of air tightness
- guidance on airtightness strategy – the property achieved a very good airtest result of 2.21 m3/h/m2 despite not aiming for the highest levels.
- Final EPC rating: B (84)