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An airtightness test certificate remains valid as long as the building’s airtightness characteristics remain unchanged, though there is no universal expiry date for the certificate itself. However, the certification for

Performing a DIY air tightness assessment can help identify basic air leakage issues, but it is often prudent to engage professional air tightness testers to ensure compliance with building regulations

Achieving airtightness in large commercial spaces presents a range of challenges, chiefly impacting energy efficiency and costs. Significant energy losses from air leakage can lead to increased heating and cooling

Ratio Seven offers invaluable support to house builders, property developers, and self-builders across the UK by simplifying the complexities of building regulations and compliance. Their expertise in performing SAP calculations

To optimise your heating system for improved Standard Assessment Procedure (SAP) results, several key strategies must be employed. Firstly, orienting your building to maximise solar gains and applying comprehensive thermal

The impact of airtightness on air conditioning systems is profound, influencing both the efficiency and energy consumption of buildings. When a building achieves optimal airtightness, it minimises uncontrolled air leakage,

Building Control Bodies (BCBs) are integral to the construction process in the UK, ensuring compliance with Building Regulations to protect the health, safety, and welfare of all building occupants. They

Thermal comfort significantly influences SAP calculations, which are essential for determining the energy efficiency of UK buildings. Key factors impacting thermal comfort include thermal mass, insulation, ventilation system performance, and

SAP calculations are essential for assessing the energy efficiency of dwellings, with a significant focus on ventilation systems, especially those incorporating heat recovery. Mechanical Ventilation with Heat Recovery (MVHR) systems