If you’re building or renovating a property in County Tyrone, air tightness testing isn’t just a box-ticking exercise — it’s a legal requirement under Building Regulations Part F (Northern Ireland), and it plays a real role in how comfortable and energy-efficient your finished building will be.
What Is Air Tightness Testing?
Air tightness testing measures how much air leaks in and out of a building through gaps in the fabric — around windows, doors, service penetrations, and junctions between materials. The tighter the building envelope, the less heat escapes, which means lower energy bills and reduced CO2 emissions for the property’s lifetime.
At CPL Energy Services, we carry out air tightness testing across Tyrone and the wider Northern Ireland area using both traditional fan pressure (blower door) testing and the newer Pulse testing method, depending on what suits your project.
Why Air Tightness Testing Tyrone Matters
Tyrone has seen steady growth in both new-build housing and self-build projects in recent years, and every new dwelling needs to demonstrate compliance with air permeability targets before building control will sign it off. Getting a test booked early — ideally once the building is largely airtight but before final finishes go on — gives you time to fix any leakage issues without costly rework later.
For self-builders in particular, an early “pre-test” can flag problem areas like poorly sealed loft hatches, gaps around pipework, or badly fitted windows, so you’re not caught out on test day.
Fan Pressure Testing vs. Pulse Testing
- Fan pressure testing uses a blower door fan to depressurise the building and measure air leakage — the traditional, widely used method.
- Pulse testing is quieter and faster, testing at normal atmospheric pressure without a large fan, and works well for occupied buildings or smaller dwellings.
Both methods are fully compliant with ATTMA testing standards, and our accredited assessors will recommend the right approach for your build.
Booking Air Tightness Testing in Tyrone
CPL Energy Services is based in Carrickmore, County Tyrone, so we’re on hand to test properties across the county — as well as SAP calculations and Energy Performance Certificates if you need those too. Contact us today to book your air tightness test or to ask any questions about the process.
