Profile: Site Measurement Services Limited provides air pressure & other technical testing and measurement services for domestic house builders & developers. We are specialized in construction site based technical testing with hundreds of air tightness and thousands of sound insulation tests. We can also produce Energy Performance Certificates (EPC) which is being introduced to help improve the energy efficiency of buildings. Sound insulation testing is a method of quantifying the sound insulation performance of a wall or floor. Sound insulation testing can be carried out on party walls, party floors or facades of any building. The methodology for sound insulation testing is set out in various parts of BS EN ISO 140 and ratings in parts of BS EN ISO 717. Sound insulation testing required for pre-completion testing (PCT) with respect to Building Regulations Approved Document Part E is carried out when the construction of party walls and floors are largely complete. Air pressure testing is a method of measuring and quantifying the air leakage of a building. Air tightness tests are usually carried out during the construction and commissioning process of a building when the external envelope is fully complete, with windows & external doors in place.