EN 636 EN 13986:2004

EN 13986 is the European standard for wood-based panels including plywood, OSB, LVL, particle board and MDF. It defines the performance and test methods for wood sheets enabling their use in construction industry. Compliance confers a presumption of ‘fitness for purpose’ for end use in the building.
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For plywood, there is a data table listing the technical performance for structural and non-structural uses for the dry, humid and exterior conditions. Plywood meets the requirements of EN 636 according to EN 13986:2004. All plywood exported to Europe Union must be marked with CE and they should follow the requirements of EN 636 according to EN 13986:2004. This guide shows the requirements of EN 636 as given in the harmonised European Standard EN 13986:2004+A1:2015 (updated). 

Performance

Characteristics

STRUCTURAL

NON-STRUCTURAL

EN 13986 Table No.

Internal

Dry

Table 1

Internal

Humid

Table 2

Exterior

Table 31

Floors,

Walls &

Roofs

Table 7

Internal

Dry

Table 4

Internal

Humid

Table 5

Exterior

Table 61

Bending strength

5.1

5.1

5.1

5.1

5.1

5.1

5.1

Bending stiffness

5.2

5.2

5.2

5.2

Bond quality

5.3

5.3

5.3

5.3

5.3

5.3

5.3

Durability -moisture resistance

5.6.5

5.6.5

5.6.52

5.6.5

5.6.5

Release of formaldehyde

5.7

5.7

5.7

5.7

5.7

5.7

5.7

Reaction to fire

5.8

5.8

5.8

5.8

5.8

5.8

5.8

Water vapour permeability

5.9

5.9

5.9

5.9

5.9

5.9

5.9

Airborne sound insulation

5.10

5.10

5.10

5.10

5.10

5.10

5.10

Sound absorption

5.11

5.11

5.11

5.11

5.11

Thermal conductivity

5.12

5.12

5.12

5.12

5.12

5.12

5.12

Strength & stiffness for structural use

5.13

5.13

5.13

5.13

Optional/Extra tests for strength & stiffness for structural use3 See Clause 5.13

These characteristics may or may not have

been tested by the manufacturer.

Only required for specific end-use applications

Impact resistance for structural use

5.14

Strength & stiffness under point load for structural use

5.154

Racking resistance 5.15.3 5.15.3 5.15.3 5.15.3
Mechanical durability

5.16

5.16

5.16

5.16

Biological durability

5.17

5.17

5.17

5.17

5.17

5.17

5.17

Content of pentachlorophenol (PCP)

5.18

5.18

5.18

5.18

5.18

5.18

5.18

Embedment strength 5.19 5.19 5.19 5.19
Air permeability 5.205 5.205
Notes:

Shaded cells – Essential characteristics which must be determined

Non-shaded cells – Performance characteristics determined only if required

1 Plywood should be used out of direct contact with the ground, soil or water

2 For use in humid conditions only

3 Tests for strength & stiffness in tension & compression, panel shear (Modulus of Rigidity), panel shear, planar shear (Modulus of Rigidity), & planar shear stregth

4 Only relevant when intended for structural floor or roof decking on joists

5 Relevant only for use as wind barriers

The number of this standard (EN 636) and the conditions of use:
EN 636-1 dry conditions
EN 636-2 humid conditions
EN 636-3 exterior conditions

The letter corresponding to the panels intended application:
“S” for structural (load bearing)
“NS” for general purpose (non-structural)