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Penetration Seals

Penetration seals are materials or systems used to seal openings created by services such as gas, water, electricity, and drainage as they pass through fire-resisting walls, partitions, floors, and ceilings, ensuring that the integrity and insulation of the fire compartmentation are not compromised. The purpose of fire resistance testing is to confirm compliance with building codes and standards, ensuring the seals maintain their protective properties during a fire.


We are able to perform fire resistance testing for foams, sealants, mastics and other fire resistant penetration seals.

UKAS Accredited Laboratory

Our UKAS accredited
 testing laboratory No. 21542 can provide full end-to-end fire resistance testing.

Comprehensive Report


Once your test is completed, you will be issued with a comprehensive and internationally recognised fire resistance test report accessible by your very own online portal with a full video of the test conducted.

Test Standards


  • BS EN 1366-3:2021 - Fire resistance tests for service installations - Penetration Seals

  • How much does a fire resistance test cost?
    Full-scale Fire Resistance tests are available from £7,800 plus VAT. However, every test is unique, and fees can vary based on the scope of work involved. During contract review, UKTC personnel will work collaboratively with customers to ensure that the broadest field of application is achieved whilst minimising investment.
  • How long does it take to get results?
    On completion of the test, the responsible officer will confirm the results within 24 hrs. This will be followed by a comprehensive draft report within 14 days.
  • Can my product be changed from what was tested?
    Unlike fire resistance tests under British Standards, European standards provide a Direct Field of Application (DIAP) which detail the permissible changes from what was tested. An Extended Field of Application (EXAP) can also be undertaken which offers a great scope of variations than a DIAP.
  • What is third-party certification?
    Third-party certification is independent verification that a product or service fulfils certain criteria. With passive fire protection products, this normally involves a certification body assessing test results, carrying out a factory production control audit and undertaking periodic inspections to ensure constancy of performance. UKTC work with many approved certification providers, including Bluesky Certification, IFC Certification and UL Solutions.
  • What is UKCA Marking?
    UK Conformity Assessed (UKCA) marking is the new product marking which will be required for certain products placed on the market in Great Britain (England, Wales and Scotland).
  • Does my product require UKCA Marking?
    The Construction Products Regulation in Great Britain states that any Construction Product covered by a UK Designated Standard must be UKCA marked.
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