Annex

United Kingdom

Table 1

Classes of reaction to fire performance for cross laminated timber products and laminated veneer lumber products for walls and ceilings

Product^f1	Product detail	Minimum mean density^f2 (kg/m³)	Minimum overall thickness (mm)	Class^f3
Applies to all species and glues covered by the product standards.
Conditioned in accordance with standard EN 13238.
Class as set out in Table 1 of the Annex to Delegated Regulation (EU) 2016/364.
Class valid for any substrate or air gap behind.
Cross laminated timber products covered by the harmonised standard EN 16351	Minimum layer thickness of 18 mm	350	54	D-s2, d0^f4
Laminated veneer lumber products covered by the harmonised standard EN 14374	Minimum veneer thickness of 3 mm	400	18	D-s2, d0

Table 2

Classes of reaction to fire performance for cross laminated timber products and laminated veneer lumber products for floorings

Product^f5	Product detail	Minimum mean density^f6 (kg/m³)	Minimum overall thickness (mm)	Class for floorings^f7
Applies also to steps of stairs.
Conditioned in accordance with standard EN 13238.
Class as set out in Table 2 of the Annex to Delegated Regulation (EU) 2016/364.
Class valid for any substrate or air gap behind.
Cross laminated timber products covered by the harmonised standard EN 16351	minimum layer thickness of 18 mm and with the surface layer made of pine	430	54	D_FL-s1^f8
Cross laminated timber products covered by the harmonised standard EN 16351	minimum layer thickness of 18 mm and with the surface layer made of spruce	400	54	D_FL-s1
Laminated veneer lumber products covered by the harmonised standard EN 14374	with a minimum veneer thickness of 3 mm and with the surface layer made of pine	480	15	D_FL-s1
Laminated veneer lumber products covered by the harmonised standard EN 14374	with a minimum veneer thickness of 3 mm and with the surface layer made of pine	430	20	D_FL-s1
Laminated veneer lumber products covered by the harmonised standard EN 14374	with a minimum veneer thickness of 3 mm and with the surface layer made of spruce	400	15	D_FL-s1

Annotations

f1: Applies to all species and glues covered by the product standards.
f2: Conditioned in accordance with standard EN 13238.
f3: Class as set out in Table 1 of the Annex to Delegated Regulation (EU) 2016/364.
f4: Class valid for any substrate or air gap behind.
f5: Applies also to steps of stairs.
f6: Conditioned in accordance with standard EN 13238.
f7: Class as set out in Table 2 of the Annex to Delegated Regulation (EU) 2016/364.
f8: Class valid for any substrate or air gap behind.