Building & Development
The fireproofing processes used and the formulations of Protecflam Industries make it possible to obtain an M1 classification – very difficult to flame – or M2 – which is not very flammable, for most woods, cardboard, fabrics or ropes.
Please note: since 2002, the M classification has been replaced by a European classification that measures not only flammability but also heat release, the opacity of smoke and the propensity of a material to produce incandescent droplets: the Euroclasse.
The Construction Products Regulation (CPR) requires a Euroclass performance to be presented for products linked to a harmonised European standard. This is the case for wooden panels, panelling, cladding, etc.
Although it is not possible to actually correspond between the two classifications, the new Euroclass D wood-fire classification will be associated with the M3 classification, the Euroclass C with the M2 classification and the Euroclass B with the M1 classification, the reverse being false.
On the other hand, for materials and furnishing products, furniture the M classification remains in force, as for fabrics for example.
| Product classes according to NF EN 13501-1 (Euroclasses) | Former classification | ||
|---|---|---|---|
| Fire behaviour | Smoke production | Flaming droplets | |
| A1 | – | – | Non-combustible |
| A2 | S1 | d0 | M0 |
| A2 | S1 | d1 | M1 |
| A2 |
S2 S3 |
d0 d1 |
M1 |
| B |
S1 S2 S3 |
d0 d1 |
M1 |
| C |
S1 S2 S3 |
d0 d1 |
M2 |
| D |
S1 S2 S3 |
d0 | M3 |
| D |
S1 S2 S3 |
d1 | M4 – non-dripping |
| E | Not applicable | d1 | M4 |
| E | Not applicable | D2 | No ranking |
| F | Not applicable | Not applicable | No ranking |
Correspondence of the M and Euroclass classifications
In no case is there an equivalence between the Euroclass and M fire classifications, but only the degrees of performance are classified in a hierarchical manner. They then give performance indicators with regard to fire without a comparative scale with each other.
