The quickest way to achieve B-s1-d0 reaction to fire and decoration in the same time

  • Class B-s1-d0 in one coat (BS EN 13501-1 and 13501-2)
  • Class B-s1-d0 with only 250 g/m2 - No top-coating required
  • Class B-s1-d0 for any type of timber with density 300 Kg/m3 or above
  • Class B-s1-d0 for any timber thickness of at least 9mm
  • Top coating available in hundrends of colours
  • Recommended to achieve healthy environments: Class A+ Air Emissions (ISO 16000), ECOLABEL, LEED and BREEM compliant
  • MELAMINE FREE, Aithon innovative and exclusive intumescent technology
Class B-s1-d0 and full range of colours

Advantages

Transparent, Water based, Easy to apply

Time and cost saving

  • Application in one coat, no primer, no top coating required
  • Easy application: up to 300 g/m2 in one coat even when brushing in vertical position

Appearance

  • Transparent
  • Matt finish without top coating
  • Keeps the natural timber look unchanged

Healthy environment

  • Water based
  • VOC <0,3%
  • Halogen-free
  • Melamine-free
  • CMR 0% - dangerous substances totally free

Long lasting

The ageing tests required by CE marking demonstrated its high resistance to low temperatures and high humidity environments without reduction of fire protection performance.

Certified

Only a certification system, based on regular production controls made by a third party, grants that every single drum of product has the required performance.
AITHON ATR24 quality is granted by the European Technical Approval (ETA) and CE marking.

 

Frequently Asked Questions

What fire protection classification does AITHON AL20X achieve?
AITHON AL20X reaches Class B-s1-d0 reaction to fire in a single coat, in compliance with BS EN 13501-1 and 13501-2.

Does AITHON AL20X require a top coat?
No top coating is required for indoor use — B-s1-d0 is achieved in one coat with only 250 g/m². For outdoor or long-term exterior applications, the AITHON F4X water-based topcoat is recommended.

Can AITHON AL20X be used outdoors?
Yes. When finished with AITHON F4X, a water-based, high UV-resistance topcoat, the system is suitable for permanent outdoor use as well as indoors.

Does AITHON AL20X contain melamine?
No, like all Aithon products, AL20X is built on a melamine-free intumescent technology.

What type of timber can AITHON AL20X be applied to?
It is suitable for any timber or wood-based substrate with a density of 300 kg/m³ or above, making it versatile across a wide range of structural and decorative timber applications.

Is AITHON AL20X available in different colours?
Yes. With the AITHON F4X topcoat, it can be finished in a full range of colours, including most RAL and BS4800 shades — useful for exhibition panels, theatrical sets, and any project where fire protection needs to be combined with a specific finish.

How is AITHON AL20X applied?
It can be applied by brush, roller or spray gun, and is quick-drying — touch dry in around 20–30 minutes at 20°C and 55% relative humidity.

What certification backs AITHON AL20X's performance?
Its quality is guaranteed by the European Technical Approval (ETA) and CE marking, based on regular third-party production controls that verify every batch meets the required performance.