Quelfire QB50 QuelStop Fire Batt

September 28, 2026

Quelfire QB50 QuelStop Fire Batt provides a firestopping solution for maintaining compartmentation where building services penetrate fire-rated walls and floors.


Blazeout supplies Quelfire firestopping products for contractors and construction projects throughout the UK, including QB50 Fire Batt and associated QuelStop products.


What is Quelfire QB50 Fire Batt?

Quelfire QB50 is an ablative-coated mineral wool fire batt designed for penetration sealing applications.


Fire batt systems are commonly used where openings have been created in compartment walls or floors to accommodate mechanical and slectrical services.


Depending upon the tested configuration, QB50 may be installed as a single batt, double batt or patress arrangement.


Quelfire QB50 Fire Rating

Quelfire QB50 has been tested to BS EN 1366-3, with tested configurations achieving fire resistance ratings up to EI120.


The actual performance depends upon the complete tested system, inculding the supporting construction, service type, opening dimensions, number and arrangement of batts and any additional penetration sealing products.


Always check the appropriate Quelfire tested detail before installation.


Products used with QB50 Fire Batt

Depending upon the services passing through the batt, other Quelfire products may be required to complete the tested firestopping system.


These can include:

  1. Quelfire QWR Fire Collats
  2. Quelfire QRS Fire Sleeves
  3. quelfire QIF Insulated Fire Sleeves
  4. Quelfire QHPE Graphite Sealant
  5. Quelfire QSS Acrylic Sealant
  6. Quelfire QuelCoil Intuwrap
  7. Quelfire Intufoam


Quelfire specifies that QuelStop Fire Batt is installed with QuelStop Intumescent Acrylic Sealant applied to cuts, joints and exposed edges.


Buy Quelfire QB50 Fire Batt

Blazeout supplies Quelfire QB50 Fire Batt together with the associated firestopping products required for your project.


If you havea product scheudle of Quelfire product cods, send them over to our team and we can assist with your requirements.

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