# Commission Delegated Regulation (EU) No 1291/2014 of 16 July 2014 on the conditions for classification, without testing, of wood-based panels under EN 13986 and solid wood panelling and cladding under EN 14915 with regard to their fire protection ability, when used for wall and ceiling covering (Text with EEA relevance), Annex

Extent: E+W+S+N.I.

Mounted directly on any substrate without an air gap.
Joints with square edges or tongue and groove profile and with the same thickness as the product and without gaps.
Class as set out in Decision 2000/367/EC.
K1 10 for substrates ≥ 300 kg/m3
Brad length minimum 40 mm and spacing maximum 100 mm
Screw length minimum 30 mm and spacing maximum 200 mm
Screw length minimum 30 mm and spacing maximum 150 mm
Screw length minimum 50 mm and spacing maximum 200 mm
Screw length minimum 75 mm and spacing maximum 200 mm
Nail length minimum 60 mm and spacing maximum 600 mm
Nail length minimum 50 mm (in each layer) and spacing maximum 600 mm
The two layers are mounted with the longitudinal direction of the layers perpendicular to each other.
Product
EN product standard
Product detail
Minimum mean density(kg/m3)
Minimum thickness(mm)
K Class
Hardboard
EN 13986
With and without tongue and groove
800
9
K2 10
OSB
EN 13986
With and without tongue and groove
600
10
K2 10
Particleboard
EN 13986
With tongue and groove
600
10
K2 10
Particleboard
EN 13986
With and without tongue and groove
600
12
K2 10
Plywood
EN 13986
With and without tongue and groove
450
12
K2 10
Solid wood panels
EN 13986
With and without tongue and groove
450
12
K2 10
Particleboard
EN 13986
With tongue and groove
600
25
K2 30
OSB
EN 13986
With tongue and groove
600
30
K2 30
Plywood
EN 13986
With tongue and groove
450
26
K2 30
Solid wood panels
EN 13986
With tongue and groove
450
26
K2 30
Solid wood panels
EN 13986
With tongue and groove
450
53
K2 60
Solid wood panelling and cladding
EN 14915
With tongue and groove
450
15
K2 10
Solid wood panelling and cladding
EN 14915
With tongue and groove
450
27
K2 30
Solid wood panelling and cladding
EN 14915
With tongue and groove
450
2 × 27
K2 60

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Source: https://www.legislation.gov.uk/eur/2014/1291/annex (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-1291/annex
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.