Airtightness is a fundamental aspect of Passivhaus design, vital for ensuring optimal energy efficiency, thermal comfort, indoor air quality, and building durability. By preventing unintentional air leakage, airtightness significantly reduces the need for mechanical heating and cooling, resulting in lower energy consumption and a reduced carbon footprint. Furthermore, a well-sealed building envelope enhances indoor comfort by maintaining consistent temperatures and preventing drafts, while also ensuring that air quality is controlled and free from pollutants thanks to mechanical ventilation systems with heat recovery. Ultimately, achieving the stringent airtightness levels required by Passivhaus standards demands meticulous design, the use of top-quality materials, and precision in construction practices, making airtightness a cornerstone of this energy-efficient building approach.

Understanding the interplay between renewable energy systems and SAP calculations is crucial for anyone looking to improve their property’s energy efficiency rating. SAP calculations help ensure buildings in the UK meet stringent energy standards by considering factors such as heating, insulation, and lighting. Renewable energy systems, such as solar panels and wind turbines, can significantly improve your SAP rating by reducing your carbon footprint and energy costs. Although the initial investment can be high, financial incentives and grants from the UK government can offset these expenses. At Ratio Seven, we specialise in integrating renewable energy systems into properties to optimise SAP ratings and ensure maximum energy efficiency.