# Commission Decision of 17 January 2003 establishing the classes of reaction-to-fire performance for certain construction products (notified under document number C(2002) 4807) (Text with EEA relevance) (2003/43/EC), Annex Extent: E+W+S+N.I. The tables set out in this annex list construction products and/or materials which satisfy all the requirements for the performance characteristic reaction to fire without need for testing. Table 1 Classes of reaction to fire performance for wood-based panels Mounted without an air gap directly against class A1 or A2-s1, d0 products with minimum density 10 kg/m 3 or at least class D-s2, d2 products with minimum density 400 kg/m 3 . A substrate of cellulose insulation material of at least class E may be included if mounted directly against the wood-based panel, but not for floorings. Mounted with an air gap behind. The reverse face of the cavity shall be at least class A2-s1, d0 products with minimum density 10 kg/m 3 . Mounted with an air gap behind. The reverse face of the cavity shall be at least class D-s2, d2 products with minimum density 400 kg/m 3 . Veneered, phenol- and melamine-faced panels are included for class excl. floorings. A vapour barrier with a thickness up to 0,4 mm and a mass up to 200 g/m 2 can be mounted in between the wood-based panel and a substrate if there are no air gaps in between. Class as provided for in Table 1 of the Annex to Decision 2000/147/EC. Class as provided for in Table 2 of the Annex to Decision 2000/147/EC. Product EN product standard End use condition Minimum density (kg/m 3 ) Minimum thickness (mm) Class (excluding floorings) Class (floorings) Cement-bonded particleboard EN 634-2 without an air gap behind the panel 1 000 10 B-s1, d0 B fl -s1 Fibreboard, hard EN 622-2 without an air gap behind the wood-based panel 900 6 D-s2, d0 D fl -s1 Fibreboard, hard EN 622-2 with a closed air gap not more than 22 mm behind the wood-based panel 900 6 D-s2, d2 — Particleboard , , EN 312 without an air gap behind the wood-based panel 600 9 D-s2, d0 D fl -s1 Fibreboard, hard and medium , , EN 622-2 EN 622-3 MDF , , EN 622-5 MDF , , EN 300 Plywood , , EN 636 -“- 400 9 D-s2, d0 D fl -s1 Solid wood panel , , EN 13353 12 Flaxboard , , EN 15197 -“- 450 15 D-s2, d0 D fl -s1 Particleboard , EN 312 with a closed or an open air gap not more than 22 mm behind the wood-based panel 600 9 D-s2, d2 — Fibreboard, hard and medium , EN 622-2 EN 622-3 MDF , EN 622-5 OSB , EN 300 Plywood , EN 636 -“- 400 9 D-s2, d2 — Solid wood panel , EN 13353 12 Particleboard , EN 312 with a closed air gap behind the wood-based panel 600 15 D-s2, d0 D fl -s1 Fibreboard, medium , EN 622-3 MDF , EN 622-5 OSB , EN 300 Plywood , EN 636 -“- 400 15 D-s2, d1 D fl -s1 Solid wood panel , EN 13353 D-s2, d0 Flaxboard , EN 15197 -“- 450 15 D-s2, d0 D fl -s1 Particleboard , EN 312 with an open air gap behind the wood-based panel 600 18 D-s2, d0 D fl -s1 Fibreboard, medium , EN 622-3 MDF , EN 622-5 OSB , EN 300 Plywood , EN 636 -“- 400 18 D-s2, d0 D fl -s1 Solid wood panel , EN 13353 Flaxboard , EN 15197 -“- 450 18 D-s2, d0 D fl -s1 Particleboard EN 312 any 600 3 E E fl OSB EN 300 MDF EN 622-5 -“- 400 3 E E fl 250 9 E E fl Plywood EN 636 -“- 400 3 E E fl Fibreboard, hard EN 622-2 -“- 900 3 E E fl Fibreboard, medium EN 622-3 -“- 400 9 E E fl Fibreboard, soft EN 622-4 -“- 250 9 E E fl Table 2 Classes of reaction — to — fire performance of gypsum plasterboards Determined according to EN ISO 536 and with no more than 5 % organic additive content. Classes as provided for in Table 1 of the Annex to Commission Decision 2000/147/EC. Gypsum plasterboard Nominal board thickness (mm) Gypsum core Paper grammage (g/m 2 ) Substrate Class (excluding floorings) Density (kg/m 3 ) Reaction to fire class Conforming to EN 520 (except perforated boards) ≥ 6,5 < 9,5 ≥ 800 A1 ≤ 220 Any wood-based product with density ≥ 400 kg/m 3 or any product of at least class A2-s1, d0 A2-s1, d0 > 220 ≤ 320 B-s1, d0 ≥ 9,5 ≥ 600 ≤ 220 Any wood-based product with density ≥ 400 kg/m 3 or any product of at least class A2-s1, d0 or any insulating product of at least class E-d2 mounted according to method 1 A2-s1, d0 > 220 ≤ 320 B-s1, d0 Table 3 Classes of reaction-to-fire performance of high-pressure decorative laminate panels Either directly fixed (i.e. with no air gap) to a material having a reaction to fire of A2-s1, d0 or better and a density of at least 600 kg/m 3 , or mounted on a timber or metal batten support frame, with a non-ventilated (i.e. void open only at the top) air gap of at least 30 mm, the reverse face of the cavity so formed having a reaction to fire classification of A2-s1, d0 or better. Classes as provided for in Table 1 of the Annex to Decision 2000/147/EC. Complying with European Standard EN 438-7. High pressure decorative laminate panels Product detail Minimum density (kg/m 3 ) Minimum overall thickness (mm) Class (excluding floorings) Interior grade non-FR Compact HPL panels Compact HPL meeting EN 438-4 type CGS 1 350 6 D-s2, d0 Interior grade non-FR HPL composite panels with wood-based substrates Composite panels comprising non-FR grade HPL meeting the requirements of EN 438-3, adhesively bonded to both sides of non-FR grade wood-based core of minimum thickness 12 mm complying with EN 13986, using PVAc or thermosetting adhesive at an application rate of 60 to 120 g/m 2 Wood-based core minimum density 600 HPL minimum density 1 350 12 mm wood-based core with HPL ≥ 0,5 mm bonded to both sides D-s2, d0 Table 4 Classes of reaction-to-fire performance of structural timber products Applies to all species covered by the product standards. Classes as provided for in Table 1 of the Annex to Decision 2000/147/EC. Conditioned according to EN 13238. Product detail Minimum mean density (kg/m 3 ) Minimum overall thickness (mm) Class (excluding floorings) Structural timber Visual and machine graded structural timber with rectangular cross-sections shaped by sawing, planing or other methods or with round cross-sections 350 22 D-s2, d0 --- Source: https://www.legislation.gov.uk/eudn/2003/43/annex (the official version) Page: https://openlegislation.uk/eu-decision-2003-43/annex Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.