EN 13501-1: 2007
Fire Classification of Construction Products and Building elements – Classification using test data from reaction to fire tests +A1 : 2009
This standard provides the reaction to fire classification procedure for all construction products (including wood-based products). It includes products incorporated within building elements. It is referenced in the harmonised European standard for wood-based panel products, EN 13986.
Products are considered in relation to their end use application and divided into two separate categories – construction products, excluding floors; and flooring.
- There are seven classes of reaction to fire , A1, A2, B, C, D, E and F, plus
- Two sets of additional classifications for:
Smoke production – s1, s2 and s3
Flaming droplet/particles – d0, d1 and d2
The five test methods used depending upon the end use application are:
- Non-combustibility test (prEN ISO 1182)
- Calorific potential test (prEN ISO 1716)
- Single burning item test (EN 13823)
- Ignitability test (prEN ISO 11925-2)
- Burning behaviour, flooring +radiant source (prEN ISO 9239-1)
Table showing plywood and OSB reaction to fire classification, as per EN 13986
Wood-based panel product* |
EN grade reference |
Minimum density (kg/m3) |
Minimum thickness (mm) |
Class |
Class |
---|---|---|---|---|---|
Plywood |
EN 636 |
400 |
9 |
D-s2, d0 |
DFL – s1 |
OSB |
EN 300 |
600 |
9 |
D-s2, d0 |
DFL – s1 |
LVL | No reaction classification given in any EN | ||||
*Wood-based panels mounted without an air gap directly against class A1 or A2-s1, d0 products with minimum density 10kg/m3 or at least class D-s2, d0 products with minimum density 400 kg/m3 |