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FR Intumescent Sealant

Product Code: FAS0133

FAS0133 FR Intumescent Sealant is a halogen free, polymer emulsion-based sealant that swells when subjected to temperatures in excess of 125°C and forms a char coat that restricts the passage of smoke and fire. It is easily applied and dries to a flexible and smooth surfaced material which is readily over paintable. It has excellent adhesion to a wide range of substrates and will not harden or crack with age.

Specification Compliance

FAS0133 Intumescent FR Sealant has been independently tested to the following assessments:

  • BS EN 1366-3: 2004 & BS EN 1366-4: 2006 Tested at Bodycote Warrington Fire, achieving 4-hour integrity and insulation rating for a range of linear and penetration seals.
  • an indicative fire test based on BS476 Part 20 & 22 at Warrington Fire Research and achieved a 4- hour fire rating (integrity) for a range of vertical and horizontal joints up to 35mm wide between various non-combustible construction materials. A 1-hour fire rating (integrity) was achieved for a range of vertical joints up to 25mm wide between combustible materials (timber).
  • BS EN ISO 10140-2: 2010 Measurement of Airborne Sound Insulation of Building elements. University of Salford reports 2612 – 76, 77, 79 – 81. The sealant maintained the integrity of a plasterboard partition wall with a Sound Reduction Index of 55Db. VOC test report classification – M1 and Indoor Air Comfort GOLD ®


FAS0133 Intumescent FR Sealant forms a fire and smoke seal in joints up to 35mm wide without slumping. It is ideal for sealing joints in and around internal partitions, lap joints in fire-rated cladding and for sealing between fire doors and fire-rated walls. It is recommended that a sealant depth of at least 8 mm be applied.

If the sealant is to be overpainted, building regulations may require a fire-resistant coating.


FAS0133 Intumescent FR Sealant is not suitable in joints where movement exceeds ± 7.5% of joint width, or in external joints.

Applications Instructions

To achieve a high-quality joint, clean all surfaces, remove dust and ensure surfaces are dry. Non- porous surfaces should be degreased using a suitable degreasing agent. Highly porous surfaces should be sealed with a suitable primer. Apply masking tape to each side of joint and gun sealant firmly into joint, smoothing off with a wetted spatula. Masking tape should be removed within 10 minutes of application.


1 tube is sufficient to produce approx. 1m using a 20mm x 15mm bead.


Store in cool dry conditions. PROTECT FROM FROST.

Health and Safety

No known health hazards when used as recommended. Consult Health and Safety data sheet for further information. As with all chemical product, care should be taken during use and storage to avoid contact with foodstuffs, skin, eyes and mouth. If accidentally ingested, seek medical attention do not induce vomiting and give copious amounts of water to drink. KEEP AWAY FROM CHILDREN AND ANIMALS.

Additional Information

As we have no control over the manner or conditions in which our products are used, we cannot accept liability for results. Our recommendations on the use of our products are based on tests believed to be reliable but we would ask that you conduct your own tests to determine their suitability for your applications. Responsibility for ascertaining the suitability of products for the user’s purposes rests with the purchaser. Flowstrip® Limited and its agents cannot assume liability or responsibility for their requirements and adopt such precautions as required for the protection of personnel and property in the handling and usage of Flowstrip® Limited materials.

Adhesive Thickness Temperature Range
  • 5°C to 40°C
  • Excellent Adhesion

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    © Flowstrip 2024 | Registered Number 01597249 | Registered in England | VAT No. GB 349 0769 24
    Flowstrip® Limited, Markham House, Atkinsons Way, Foxhills Industrial Estate, Scunthorpe, North Lincolnshire, DN15 8QJ
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