Stroma Built Environment provides comprehensive Air Tightness Testing and Consultancy services. From initial design stages, we can help you achieve air permeability targets, planning requirements, UKAS Building Regulations Part L, and BREEAM for planning and building regulations.

Stroma Built Environment offers complementary services for UKAS Accredited Air Tightness Testing for Part L Compliance. Our accreditation is limited to those activities described on our UKAS schedule of accreditation.

Air Tightness Consultancy

Stroma Built Environment offers professional Air Tightness Consultancy services for projects in design stages. We can help you achieve air permeability targets, planning requirements, building Regulations Part L, and BREEAM. Helping to identify potential air tightness improvements, reduce overall construction costs, and minimise risks, our services include:

  • Desktop Design Reviews.
  • Architectural Drawing Reviews.
  • Pre-test Site Inspections.
  • Air Tightness Testing.
  • Online Design Reviews and Design Workshops.
testing air tightness of a new build home

Air Sealing Testing Services

Stroma Built Environment provides Remedial and Temporary Air Sealing and Fire Stopping Services to reduce risks of air leakage, in the event of a fire, or where a building has failed its air tightness testing. Within commercial premises, such as retail spaces, schools, and hospitals, and climate-sensitive areas, such as museums and galleries, we can identify:

  • Gaps between walls, ceilings, or floors.
  • Inadequate sealing between doors or architraves.
  • Other areas of air leakage, via smoke testing methods.
smoke coming out of a building

Other Bespoke Testing

Stroma Built Environment offers other Air testing packages including Plenums, Room integrity Remedial Air Sealing.

  • We ensure Plenums are correctly sealed for air tightness testing.
  • We offer Room Integrity Testing for Gaseous Fire Suppression Systems.
  • We deliver compliance testing for Remedial Air Sealing and Fire Stopping Services to reduce risks of air leakage, or in the event of a fire.
Plenums, Room integrity Remedial Air Sealing

Passivhaus Consultancy Services

Stroma Built Environment provides Passivhaus certification services to help you meet strict air tightness and energy efficiency targets. Our certified consultants will deliver specialist guidance and assurance throughout the entire project development process.

Click to find out more about Passivhaus

Frequently Asked Questions

When is air tightness testing required?

Air tightness testing is a mandatory requirement of Part L of the Building Regulations for all new build commercial buildings over 500 m2 and on extensions with a floor area of greater than 25% of the existing building.

Under the 2021 Part L Building Regulations, air tightness testing is required on all dwellings whereas on previous Building Regulations a representative sample may be tested.

What is Part L of Building Regulations?

Part L, or Document L, of the Building Regulations is an amended building standard stating that all new dwellings must be built in compliance with current energy conservation objectives.

How long does an air tightness test take?

In most cases, air tightness testing can be completed in as little as 1 hour and usually does not take longer than 2 hours. For larger projects with more complex buildings, access, time, and preparation, testing could take between 2 and 4 hours.

What is Passivhaus?

Passivhaus is a voluntary design standard for energy efficiency in a dwelling, aiming to produce low-energy, efficient, and sustainable buildings. Under Passivhaus, buildings in development must meet strict guidelines in areas such as air tightness, heating, and ventilation.

Passivhaus developments are required to be tested to a more onerous standard than Building Regulations Part L and are often required over and above the standard Part L testing. 

What is our test calculation methodology?

Stroma Built Environment and its team of experts are here ready to discuss a range of packages for any new project. Get in touch today!

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