air leakage
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A large accounting office had an air leakage specification to meet on commissioning new heating and ventilation plant. The air leakage test prior to hand over revealed that the building had failed the leakage specification, and Practical Completion was delayed. HRS Services were called in and we identified the air leakage paths and put forward a detailed specification to seal the leakage paths. Subsequently our site teams carried out remedial sealing. HRS supervised the next air test which met the air leakage specification, thereby enabling the Main Contractor to achieve Practical Completion. From initial enquiry to the final air test took 2 weeks.
This new site has been designed with a heating system that requires low air leakage. The entire building must show an air leakage target of < 5 m³ / m² / hr, much tighter than proposed regulations. To ensure the stringent specification is met, HRS Services was involved from an early stage, auditing stages in design and building, providing reports of progress and countering potential failings in air sealing works on site.
Our site teams have unrivalled experience of all types of air sealing. Air seals, (with or without fire protection), in all construction types, are our specialist discipline. Make sure you get the right materials installed the right way, first time. HRS Services will work during construction to fit seals at the most appropriate stage, giving low air leakage for minimum investment.
During refurbishment, or even with a building in use, HRS Services can identify and tackle the causes of air leakage. Clients can cut life time heating costs and improve user comfort appreciably by upgrading air tightness. A particular benefit is the saving that can result from specifying lower capacity H&V plant for well sealed buildings. The expense of air sealing a refurbishment can be more than offset by service plant cost reduction, with the extra benefits of operation still to come. Note, we have noticed ambient temperatures in some existing buildings to rise by 5° C after air sealing works have been completed!