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Fire Resistant Putty

Fire Resistant Putty 1kg (1 x Tub)

Fire Resistant Putty 1kg (1 x Tub)

£26.77 £22.31 (ex. VAT)
Ideal for sealing around pipes and cables in solid walls and floors | Highly flexible and water resistant | Up to 4 hrs fire resistance | 1kg x Tub

FREE DELIVERY on orders over £600 (£500 ex. VAT)*
*excluding Boards, Batts, Mortar products and the following postcodes IM, HS, ZE, JE, GY, KW, FK, PH33 or AB


Key Points

  • Fire Putty with fire resistance testing to EN 1366-3 EI 120, and BS 476 240mins.
  • Fire Classification to EN 13501-2.
  • Tested with metallic pipes and cables, please refer to the test certification.
  • Highly flexible and water resistant.
  • Halogen free, resists fungi and vermin.


This Fire Resistant Putty is a solvent free, easy to use, fire resistant putty, which is ideal for sealing around pipes and cables in solid walls and floors. Tested to EN1366-3 on C1, C2 and D1 Type Cables and Metallic Pipes. Causes no known detrimental effects to plastic pipes, plastic cables, sheathing or metallic components.

The Fire Resistant Putty is designed to remain flexible allowing thermal and mechanical movement of services. The flexibility of the putty enables complex and irregular shapes and openings to be fire stopped. Ideal for electrical, telecommunications and other such industries.

The Fire Resistant Putty has been independently tested in accordance with BS476: Part 20: 1987 and EN1366-3 and can provide up to 4 hours fire resistance depending on depth and volume (Refer to the Certifire certificate). Tested in block, concrete, masonry walls and floors.

*For specific details please refer to the test certification.


Description for Astro Putty Result Test Standard
Packaging 1kg Pail
Colour White
Density 1.55 g/cm³ ISO 2811-1:2011
pH Value 8.2
Solids 82%
Shore A Hardness 50
Application temperature +5°C to +45°C
Water Resistance Good when fully cured
U.V Resistance Good
Joint Movement ±10%
Fire Resistance EI 120 & 240 mins. EN 1366-3, BS476
Fire Classification EN 13501-2
Expected Shelf Life 12 months from DOM Store in dry conditions unopened


  • 1 (One) Kg Tub


We have technical representatives who provide assistance in the selection and specification of the products on this site and should be consulted for exact installation and product suitability. Ensure an early engagement with ourselves, designers, main contractor and specialist installers before any installation. Other trades and/or manufacturers may need to be consulted. For in-depth information, specification and technical advice please call our Head Office on Tel: +(0)1329 841416 or email


All interested parties, designer, specifier, main contractor and specialist installers should provide access to allow the fire stopping seals to be regularly inspected and maintained, as well as records kept of such maintenance at minimum periods of 12 months, as required by the Regulatory Reform Order, and repaired if necessary. Reference should be made to ASFP TGD 17 Code of Practice for the Installation and Inspection of Fire Stopping.


It is vital that those entrusted to design or install a fire stopping product have the necessary levels of competence to undertake the task professionally and thoroughly. The level of competency required will be commensurate with the expected complexity of the building. All designers must eliminate, reduce or control foreseeable risks that may arise during installation, construction or maintenance when preparing or modifying designs. Clients should ensure that the principal designer and principal contractor carry out their duties under CDM regulations. The ASFP foundation course in passive fire protection provides essential knowledge as part of demonstrating competency and understanding in this key fire protection specialism.

Additional Notes:

Please refer to the data sheets for the application of this product. For further information on installation requirements please refer to the manufacturer of the services and the wall/floor specification to ensure the compatibility of this product, if in doubt please contact the technical team with services and wall/floor specification on Tel: +(0)1329 841416 or email

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