Delivering compliant, high-performance buildings through airtightness testing.
Air tightness is a key element of the Building Regulations Part L, directly influencing energy performance, heat loss, and overall building efficiency.
MES Building Solutions provides air tightness testing and compliance support, helping residential and commercial projects achieve required targets efficiently. Our approach focuses on early engagement, practical coordination, and reliable testing to minimise risk and avoid delays at completion.
We work closely with contractors and site teams to ensure buildings are prepared for testing, improving first-time pass rates and reducing costly remedial works.

Pre-Test Guidance
Advice on construction detailing, sequencing, and site readiness to help achieve air tightness targets efficiently
Air Tightness Testing
On-site testing using calibrated equipment, measuring air permeability in line with regulatory standards
Leakage Identification
Support in identifying key air leakage areas and practical recommendations for improvement where required
Certification & Reporting
Provision of test certificates and documentation to support Building Control sign-off and Part L compliance
Why Air Tightness Matters
Airtightness is critical in reducing heat loss and uncontrolled air leakage, particularly as buildings become more energy efficient.
Effective testing and coordination ensure compliance is achieved without delays and contribute to overall building performance.
Our Air Tightness Testing Process
01
Initial Review
Assessment of project requirements and target air permeability
02
Pre-Test Preparation
Guidance to ensure the building is ready for testing and likely to pass
03
On-Site Testing
Air tightness test carried out in accordance with industry standards
04
Certification & Sign-Off
Issuing of test certificate and support for Building Control submission

Related Performance Testing Services
Additional services and guidance on the topic:
