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    Proven, quality UK-made passive fire protection products.

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    Tested firestopping solutions with full support and documentation

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    Regular CPD training, toolbox talks, and early engagement sessions.

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    Online tools and resources for effective passive fire protection.

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Glossary

Explore our latest project case studies, showcasing how Quelfire systems have been used across a range of real-world applications and building types.


  • U-PVC

    U-PVC (Unplasticized Polyvinyl Chloride) pipes and fittings, also known as rigid PVC, are used for all plumbing purposes in residential and commercial buildings. They are ideally suited for use in...

  • Water Permeability

    Permeability is a material's property that allows fluids (for example, water, water vapor, or oil) to pass through it to another medium without causing any damage. Permeability causes materials to...

  • Yield Strength

    The yield strength of a bar of material is the maximum stress that can be applied along its axis before it begins to change shape.

  • BS EN 1366-3 Test Standard

    Service penetration seals are fire tested to the BS EN 1366-3 test standard. BS EN 1366-3 outlines a method of testing and criteria, including application rules, to assess whether a...

  • Soft Char

    These intumescents produce a light char, a poor conductor of heat, which thus delays heat transfer. Ablative coatings, for example, contain a significant amount of hydrates. When the hydrates are...

  • Hard Char

    Harder chars are produced with sodium silicates and graphite. These products are suitable for use in service penetration firestop seals, as well as exterior steel fireproofing. In those applications, it...

  • Technical Assessment

    A technical assessment is a fire-resistance evaluation of an on-site application that relies on indirect test evidence. It uses established empirical methods of estimation and experience of fire testing conducted...

  • Formed Letterbox

    A formed letterbox is an aperture that has been physically constructed within a wall construction using stud and boards of the same specification as the wall itself. Otherwise known as...

  • Fire Insulation Rating

    A fire insulation rating is a measure of time that a specific component or system can withstand the heat generated from a fire and prevent it from breaching the building’s...

  • Fire Integrity Rating

    A fire integrity rating is a measure of time that a specific component or system can withstand and prevent the physical passage of fire breaching the building’s compartmentation. Fire integrity...

  • Fire Compartmentation

    Building compartmentation is an important element of ‘passive fire protection.’ The purpose of Fire Compartmentation is to contain the fire to its area of origin for as long as possible....