Project Background
The construction company was in the final stages of completing a commercial building in Doncaster and needed to assess its air permeability to meet regulatory requirements. Air permeability testing is crucial for determining the amount of air leakage in a building envelope, helping to improve energy efficiency and occupant comfort.

Testing Procedure
ATSPACE conducted the air permeability testing using specialised equipment to measure the air leakage rate. The test involved pressurising the building and measuring the rate at which air escaped through the building envelope. A lower air leakage rate indicates a more airtight structure, contributing to improved energy efficiency.

Initial Testing Challenges
During the initial testing phase, ATSPACE encountered difficulties in building up the required pressure within the structure. Despite multiple attempts, the desired pressure levels were not achieved. This raised concerns about potential leakage areas that needed to be addressed before an accurate assessment of the building's air permeability could be made.

Engineering Intervention
ATSPACE promptly engaged an experienced engineer to identify and rectify the issues preventing the desired pressure buildup. The engineer conducted a thorough examination of the building envelope, utilising smoke tests and infrared thermography to pinpoint areas of air leakage. It was discovered that there were several minor leaks around windows, doors, and other penetrations that were contributing to the pressure loss.

Repairs and Remediation
Following the engineer's assessment, the construction team promptly addressed the identified leakage areas. They sealed gaps, improved insulation, and applied appropriate sealants to ensure a more airtight building envelope. The repairs were carried out with precision and attention to detail to eliminate potential sources of air leakage.

Retesting and Success
After the necessary repairs were completed, ATSPACE conducted a second round of air permeability testing. The building now successfully achieved the required pressure levels. The results of the retest demonstrated a significant improvement, with the air leakage rate reduced to 4.49, well within the acceptable limits set by building regulations.

Conclusion
This case study highlights the importance of thorough air permeability testing in the construction process. The initial challenges faced by ATSPACE underscored the significance of identifying and addressing potential leakage areas. With the expertise of an experienced engineer and prompt remediation efforts, the construction project in Doncaster successfully passed the air permeability test, ensuring compliance with energy efficiency standards and contributing to a more sustainable and efficient building.