Ratio Seven Ltd

Ratio Seven offer specialised energy and building consultancy services, particularly focused on the construction industry. With over a decade of experience, the company excels in air tightness testing and SAP calculations, ensuring compliance with Parts L, F, and G of building regulations and issuing Energy Performance Certificates. Our services extend to technical co-ordination and Building Regulation compliance, aiding property developers and builders in navigating regulatory complexities and reducing build costs. As accredited SAP assessors and airtightness testers, Ratio Seven is committed to providing professional and responsive consultancy to support energy efficiency and regulatory adherence across new builds and existing structures. Specialties: Air Tightness Testing - Part F SAP Calculations - Part L1A SAP Calculations - Part L1B New Build EPC's & PEA's Energy Consultancy/Assessments Ventilation Design, Testing & Commissioning - Part F Water Calculations - Part G U value Calculations Technical/Building Regulation specifications & advice