Duraflam® and Duraflam-Duracote®

The Formulations

‘Duraflam®’ and ‘Duraflam-Duracote®’ are a complex mix of ammonium polyphosphates, urea, polyphosphoric acid, organo-phosphate resins, binders, penetrators and an intumescent based retardant. The formulations are virtually colourless, non-corrosive and non-hygroscopic.

Fire resistant treatments

‘Duraflam®’ and ‘Duraflam-Duracote®’ are durable flame retardant treatments and not easily reduced by external factors, such as wetting, leaching, or high humidity. The inherent strength of the treated material is not diminished by the treatment process.

Every fabric is first treated with a ‘Duraflam®’ formulation and, if required, with a ‘Duracote®’ intumescent formulation for certain types of substrate. The ‘Duraflam-Duracote®’ system is especially effective with synthetic compositions and ‘plastic’ derivatives, such as vinyls, faux suedes and acrylics.

The System

  1. Treatment of ‘Duraflam®’ is via pad, clear back coat, or controlled pressure application.
  2. Depending on fabric type and fibre composition, further applications of ‘Duraflam®’ and/or ‘Duracote®’ may be necessary to achieve the required degree of flame retardancy.
  3. Treated products are cured in one of three bakers, depending on fabric type and width, with temperatures being lowered and increased, as required, to minimise shrinkage and distortion.
  4. The treatment and curing process is via intermittent heat cycles, with heat used as the catalyst for durable fixation.
  5. An indicative flammability assessment is conducted, based on the test criteria set out in the relevant standard.


Although our certification is recognised by most fire prevention authorities, both in the UK and abroad, our in-house assessments of compliance are based on indicative tests which replicate, as far as possible, the criteria for conformity. Therefore, we recommend that treated samples are submitted to accredited laboratories, at preset intervals, for independent assessment. The combination of results ensures the continuing integrity of both treatment and certification.

System Performance – Fire Retardant

Fabrics can be treated with ‘Duraflam®’ and ‘Duraflam-Duracote®’ to comply with the following standards:

  1. BS 5852: Part 1 (Ignition Sources 0 & 1)
  2. BS 7176 Low Hazard (in accordance with BS EN 1021-1 and BS EN 1021-2)
  3. BS 7176 Medium Hazard (in accordance with BS EN 1021-1&2 + BS5852 Clause 11 (crib 5))
  4. BS 7176 High Hazard (in accordance with BS EN 1021-1&2 + BS 5852 Clause 11 (crib 7))
  5. BS 5852 (in accordance with Clause 11 using ignition source 5 crib test)
  6. BS 5852 (in accordance with Clause 11 using ignition source 7 crib test)
  7. BS 5867: Part 2: Type B
  8. BS 5867: Part 2: Type C
  9. BS 7175 (in accordance with Section 3 – ignition sources 0, 1 & 5 crib test)
  10. BS 476: Part 7: Class 1
  11. BS 476: Part 6: Class 0
  12. BS EN 13501-1
  13. BS EN 13823
  14. BS EN ISO 11925-2
  15. BS 4790
  16. NF D 60-013/AM18
  17. IMO Resolution A. 652 (16)
  18. IMO Resolution A. 688 (17)
  19. IMO Resolution A. 653 (16)
  20. IMO Resolution A. 563 (14)
  21. EN 13773
  22. NF P 92 501 [M Classification]
  23. NF P 92 503 [M Classification]
  24. DIN 4102-1 [B Classification]
  25. SN 198898
  26. ONORM B 3825
  27. FMVSS 302
  28. CAA 8/FAR/JAR/CS 25.853 (a)
  29. UNI 9175
  30. NFPA 701
  31. ASTM E 84

European Standards

The European construction industry is entering a period of transition due to the progressive implementation of the Construction Products Directive. The introduction of the new pan-European system of fire testing is one consequence.  We continue to review our procedures for future product treatment and fire test requirements accordingly.