Classification: BS EN 16755:2017
Western Red Cedar impregnated with Burnblock receives BS EN 16755:2017 classification for internal and external use (INT1, INT2 AND EXT).
BS EN16755:2017 – The standard defines a classification system for verifying the durability of the fire protection of fire retardant-treated wood products for indoor and outdoor use.
The standard defines three DRF (Durability of Reaction to Fire Performance) classes that describe the durability of fire protection:
INT1 – for permanent use in interior dry applications.
INT2 – for permanent use in interior humid applications.
EXT – for permanent use in exterior applications.
BS EN 16755:2017 classification for internal and external use INT1, INT2 and EXT*
Western Red Cedar
The classification paper has been issued by Warringtonfire, UK. As such, it has been issued in accordance with British Standards.
It is up to the individual country using EN 16755:2017 as to what degree they wish to apply to an EN standard.
✓ No coating required
✓ For permanent use in interior dry applications
✓ For permanent use in interior humid applications
✓ For permanent use in exterior applications
✓ No paint or surface treatment required
✓ No maintenance of the fire treatment required
✓ More flexibility in many application areas
Burnblock provides you with the classification paperin digital form.
We are at your disposal for further questions.
The classification paper has been issued by Warringtonfire, UK. As such, it has been issued in accordance with British Standards. It is up to the individual country using EN 16755:2017 as to what degree they wish to apply to an EN standard. In the case of EN 16755:2017, BS follows the EN standard in all areas other than the requirement of a maximum difference of 20% between the total heat release in fire tests made before and after the accelerated weathering test. As it is described in Note 1 in the certificate: “..when the timber is at Class B then a 20% increase in the total heat release is a very small number and can be exceeded simply in the variability between the measurement in 3 specimens of timber whether or not it has been weathered and therefore is an unreliable criteria for determining the effects of weathering”. Therefore, be aware that this particular point is addressed differently across the European countries using the standard. However, this difference is highlighted in the BS EN 16755:2017 certificates, we have received.