Intumescent Acrylic Sealant | CE Marked | Acoustic

Quelfire Product tested to BS EN 1366-3: 2009 at Warringtonfire

The Warringtonfire Logo displayed is the trademark of Warringtonfire registered in the United Kingdom. The Warringtonfire Logo is evidence that the products denoted as ‘Tested by Warringtonfire’ were tested to BSEN 1366-3: 2009 in England between September 22nd 2015 and January 7th 2021


This product is CE Marked.

QuelStop Intumescent Acrylic Sealant | QSS

QSS QuelStop CE Marked Intumescent Acoustic Acrylic Sealant is a water-based intumescent acrylic used to provide a fire rated linear joint or gap seal, and to maintain the fire rating of walls and floors where they have been penetrated by services as part of the QuelStop Fire Batt System or direct to the substrate.

Name: QuelStop Acrylic Sealant


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Features & Benefits

  • Used as a fundamental part of the QuelStop Fire Batt system
  • Suitable for use around cables, cable bunches, cable trays, cable ladders and non-combustible pipes
  • Suitable for use in flexible walls, rigid walls and floors
  • Suitable for linear joints up to 50mm wide in concrete to concrete/steel/softwood
  • Suitable for linear joints up to 20mm wide with gypsum board/steel headtrack
  • Suitable for low movement joints and remains flexible – maximum movement capability is ≤7.5%
  • Suitable for use around wooden fire door frames
  • Up to 4 hour fi re rating (EI240)
  • CE Marked

Product Information


  • 310ml cartridge (25 per box)
  • 600ml foil pack (15 per box)


Available as standard in white. Other colours are available subject to M.O.Q.


Joint Size


Depth of



Yield per


Cartridge (m)

Yield per


foil (m)

10 10 3.10 5.90
20 15 1.03 1.95
30 20 0.51 0.95

Additional Data

Slump: 5mm after 1hour in 30mm joints

Shrinkage: Approximately 12%

Cure Rate: 3mm per day at 50% relative 23°C

Specific Gravity: 1.56 – 1.66 g/cm3

Application Temperature: +5°C to +40°C

Tack Free: 30 minutes at 23°C and 50% relative humidity

VOC % Nonaqueous volatiles (105°C): 3.6

Acoustic Rating: Up to Rw (C;Ctr) :63 (-2;-7) dB

Packaging & Storage

QuelStop Intumescent Acrylic Sealant is supplied in disposable cartridges or foils, packaged in cardboard boxes and must be stored in ventilated, cool and dry conditions.

Health & Safety

QuelStop Intumescent Acrylic Sealant should be handled and applied wearing appropriate protective clothing, including gloves, dust mask, safety glasses, to guard against dust inhalation, eye and skin irritation.

For further information, please refer to the Material Safety Data Sheet.

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Standards & Approvals

  • Fire resistance testing to BS EN 1366-3:2009
  • Fire resistance testing to BS EN 1366-4: 2006
  • Classified to EN 13501-2: 2007 + A1: 2009
  • CE Marked
  • ETA: 17/0788 & ETA: 17/0789
  • Acoustic tested to EN 10140 to 48dB
  • Air Permeability testing to EN 1026 to 600Pa – 100Pa 0.0/0.0m3/h/m²
  • VOC Tested – ASTM D2369-10, LEED 2009-EQ041 SCAQMD

Installation Information


QuelStop Intumescent Acrylic Sealant is a fundamental part of the QuelStop Fire Batt System and should be applied to all cuts, joints and exposed edges of the batt and can also be used for sealing around services such as cable, cable bundles, trays, ladders and non-combustible pipes, either as part of a seal directly within the wall substrate or as part of a QuelStop Fire Batt Seal.

QuelStop Intumescent Acrylic Sealant can also be used as a linear joint seal in a range of applications between concrete and concrete, steel or softwood and also to a gypsum board headtrack and around wooden fi re door frames.


All surfaces must be clean and free of any bond breaking contamination prior to application of the sealant.

The sealant should not be applied if the ambient temperature is below 5°C or above 40°C, as the adhesion may be impaired.

The sealant is fast curing, approximately 15 – 60 minute tack free time, depending on the temperature and humidity.

In linear joint applications, mineral wool or PE backing rod, can be used as a backing material to ensure the correct depth of QuelStop CE Marked Intumescent Acrylic Sealant is applied in order to achieve the required performance.

For full details on application and installation, refer to all available documentation, installation details and the Quelfire Technical team.

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Technical Product Documentation

You can download multiple documents in one go from the Product Documentation Download page

Standard Installation Detail Examples - Linear Gap Joints

Visit our Standard Installation Details Download page for all drawings

Standard Installation Detail Examples - Fire Doors

Visit our Standard Installation Details Download page for all drawings

Standard Installation Detail Examples - Service Penetrations

Visit our Standard Installation Details Download page for all drawings

For other techinical resources and helpful information, please visit our help page:

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