Floor Void Air Tightness Testing
Need floor void testing for a live project?
Air Tightness Solutions provides floor void air tightness testing for contractors, developers and commercial construction projects across the UK.
We help project teams complete required testing efficiently, minimise delays and provide clear reporting and certification following the completed test.
Whether you are working on a high-rise residential development, commercial building or complex multi-service project, we can help you arrange testing at the right stage of the programme.
What is floor void air tightness testing?
Floor void air tightness testing is carried out to assess the air leakage performance of concealed floor void areas within a building.
These voids are often found within:
- Raised access floors
- Ceiling voids
- Service risers
- Mechanical and electrical service zones
- Compartmentation areas
Testing helps confirm that the void has been correctly sealed and performs in line with the project specification or fire and smoke control strategy.
On many commercial and high-rise developments, floor void testing forms an important part of the wider building performance and compliance process.
Why is floor void testing important?
Poorly sealed floor voids can create unintended air leakage paths throughout a building.
This can affect:
- Smoke control performance
- Fire compartmentation
- Pressure relationships within the building
- Energy efficiency
- Overall building performance
Testing helps identify whether the required level of air tightness has been achieved before project completion.
For many projects, floor void testing is carried out alongside other building performance testing services as part of the final compliance stage.
Why choose Air Tightness Solutions?
Floor void testing often takes place on large, fast-moving construction projects where coordination and communication matter.
Clients choose Air Tightness Solutions because we provide:
- Value Engineered Advice
- Responsive & Reliable Service
- Fully Accredited
We provide compliant solutions with ATTMA accredited engineers for Air Testing.
When should floor void testing be carried out?
Testing is typically completed once the relevant floor void areas have been fully constructed and sealed.
This may include:
- Completion of service penetrations
- Installation of fire stopping
- Sealing of joints and interfaces
- Completion of ductwork and mechanical services
- Closure of access points
Testing too early can increase the risk of failed results or aborted visits if the areas are not fully ready.
Our floor void testing process
01. Initial enquiry
Send us the project information, drawings or specifications.
02. Review & quotation
We confirm the testing requirements, methodology and pricing.
03. Booking confirmation
Testing dates are arranged to suit the project programme.
04. Site attendance & testing
Our tester attends site and carries out the required air leakage testing.
05. Results & certification
Following completion of the testing, we issue the relevant documentation and results.
Need to discuss a live project? Contact our team today.
Common causes of floor void leakage
Air leakage within floor voids is commonly caused by:
- Unsealed service penetrations
- Incomplete fire stopping
- Poorly sealed joints
- Gaps around ductwork
- Cable tray penetrations
- Interface gaps between construction elements
- Unsealed access panels
Identifying these issues before final completion can help reduce delays and remedial work later in the programme.
Supporting contractors and project teams
We understand that floor void testing is often one part of a much larger compliance and handover programme.
Our team works closely with contractors and site teams to help ensure testing is carried out efficiently and with minimal disruption wherever possible.
We can also help explain:
- Testing requirements
- Typical preparation requirements
- Common causes of leakage
- Reporting expectations
- Next steps following testing
Frequently asked questions
Who We Work With
We work with a variety of clients, from independent builders and architects to large property developers and contractors. Our reliable testing and compliance services support each project’s unique needs, ensuring top standards in energy efficiency are achieved.
What Our Clients Say About Us
Carol Keith
Andy Nelmes
Need a quote for floor void testing?
Whether you require testing for a single floor void or a larger commercial development, Air Tightness Solutions can help.
We provide reliable testing, responsive communication and clear reporting to support project compliance and completion.