Temporary Air Sealing




Temporary Air Sealing and the RIBA Plan of Work

What is Temporary Air Sealing?

Temporary Air Sealing is required in all buildings with ventilation systems prior to the final Air Tightness Test. Stroma Built Environment has the UK’s largest qualified team of Air Tightness Engineers. By using our temporary sealing services you can reduce the risk of incurring unnecessary costs from failing an Air Tightness Test.






Temporary Air Sealing services – Why choose Stroma Built Environment?

Our team of the UK’s leading air tightness specialists can offer advice to produce a schedule of temporary sealing works. All sealing works are coordinated with other site works to deliver a stress-free Air Test for our clients. We are also experienced in Remedial Air Sealing and smoke testing methods and have carried out air tests on thousands of projects across the UK.

Our team of air sealing specialists can help to identify:


Areas which need temporary air sealing

The number and size of intakes/extracts/louvres

Where access is required, including any restricted access areas

Which materials and equipment are needed

Working with our Air Tightness Engineers, we can identify causes of air leakage through smoke testing methods. Our air sealing service extends to building temporary air-tight screens and undertaking fire enclosure sealing and testing, more commonly used in server rooms.







Our Temporary Air Sealing Process

We will work with your site team to coordinate any air sealing works to minimise disturbance to other site works. Our teams are prepared with high-quality equipment to ensure that all areas are quickly and effectively sealed. These can include extendable props, sheet materials – polythene, foil faced boards, COREX, thin plywood and different tapes and glues (including low tack variants to avoid damaging finishes). Typical air leakage sites include:

  • Behind dot & dab dry-lining
  • Interconnecting cavity leakage - stud partitions
  • Window gaskets & trickle vents, windowsills
  • Recessed lighting
  • Plug sockets
  • Air extract vents/ducts
  • Loft hatches
  • External door weather seals & thresholds
  • Radiator pipe penetrations

Where access is restricted, our teams have the relevant skills and certification to set-up and access scaffold towers, scissor lifts and cherry pickers. Our IRATA trained rope access team (in conjunction with our sister company Stroma Specialist Access) can overcome particularly challenging conditions to ensure remedial works are carried out safely and compliantly.

Requirements for Temporary Air Sealing

To minimise the risk of an air test fail, all mechanical ventilation needs to be turned off, and in some cases, isolated. If required, our air sealing teams can be present to assist with the air test and are on-hand to remove temporary air sealing once the final test is complete.

Intentional ventilation, such as H and V ductwork, louvres, and trickle vents, can be sealed and any drainage taps filled with water. Smoke vents and other elements including external doors and windows should not be sealed. Please be aware, if these are sealed, this will invalidate the air-test.

Temporary Air Sealing Process



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Request a quote for Temporary Air Sealing

Contact our friendly team to request a quote for Temporary Air Sealing prior to your final air test. You can also select to receive information about our complementary testing and assessment services to allow Stroma Built Environment to provide compliance support throughout your project.





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