Fire retardant treated timber, ThermoWood® and panels

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Thanks to the process in our autoclave, many types of timber and panels have been tested and awarded reaction to fire classification B-s1,d0, in accordance with the European standard EN13501.

Solid wood

Types

Density

Min. thickness

Ventilated cavity

Reaction to fire classification

Deal

355-536

15 mm

40 mm

B-s1,d0

Pine

450-600

21 mm

B-s1,d0

Oak

500-750

20 mm

B-s1,d0

Western Red Cedar

316-494

15 mm

40 mm

B-s1,d0

Siberian larchs

650-750

15 mm

40 mm

B-s1,d0 / B-s2,d0

Sapeli

325-690

15 mm

40 mm

B-s1,d0 / B-s2,d0

According to classification: EN 13501-1:2007+A1:2009 and EN 13501-2:2007+A1:2009 and EN 13501-1-1:2018
According to classification: EN 13823 (SBI) and EN 14135:2004

Thermowood®

Types

Density

Min. thickness

Ventilated cavity

Reaction to fire classification

ThermoWood® deal

314-434

15 mm

40 mm

B-s1,d0 / B-s2,d0

ThermoWood® ash

590-680

15 mm

40 mm

B-s1,d0 / B-s2,d0

ThermoWood® pine

450-500

15 mm

40 mm

B-s1,d0 / B-s2,d0

ThermoWood® ayous

269-374

15 mm

40 mm

B-s2,d0 / B-s3,d0

Accoya

400-700

19 mm

40 mm

B-s1,d0 / B-s2,d0

According to classification: EN 13501-1:2007+A1:2009 and EN 13501-2:2007+A1:2009 and EN 13501-1-1:2018
According to classification: EN 13823 (SBI) and EN 14135:2004

Panels

Types

Density

Min. thickness

Ventilated cavity

Reaction to fire classification *1

Reaction to fire classification *2

Birch plywood

650-750

12 mm

40 mm

B-s1,d0

K1, K2,10/B-s1,d0

Pine multiplex

450-600

12 mm

40 mm

B-s1,d0

K1, K2,10/B-s1,d0

LVL

550-600

27 mm

B-s1,d0

According to classification: EN 13501-1:2007+A1:2009 and EN 13501-2:2007+A1:2009 and EN 13501-1-1:2018
According to classification: EN 13823 (SBI) and EN 14135:2004

Reaction to fire class sp fire 105

Types

Density

Min. thickness

Reaction to fire classification *1

Reaction to fire classification *2

Deal

350-500

21 mm

B-s1,d0

SP 105

The aforementioned façade cladding has been tested in accordance with the following: SP Fire 105, issue 5, dated 1994-09 and has been evaluated as meeting the requirements for the outside of buildings in class Br1.

Indication test according to EN 13823 (sbi)

Types

Density

Min. thickness

Reaction to fire classification
indicates DK Klasse A-Materials

Bamboo

600-700

26 mm

B-s1,d0

The test indicates a B-s1,d0 classification according to EN 13501-1

EN45545-2:2013 Fire behaviour of materials and components of rail vehicles

Types

Density

Min. thickness

Reaction to fire classification

Birch plywood

700-750

12 mm

R10; HL1/HL2/HL3 (floor coverings)

Birch plywood

700-750

12 mm

R1; HL1/HL2 (walls)

Birch plywood

700-750

12 mm

R7; HL1/HL2 (external walls)

FINISHING VARNISH for interior applications on timber and timber products

Types

Density

Min. thickness

Reaction to fire classification
indicates DK Klasse A-Materials

Pine multiplex

300-684

12 mm

B-s1,d0

Burnblock® varnish is a finish for materials that have been treated with Burnblock®. The fully certified treatment is only possible by combining LW-121/45/BB varnish with Burnblock®-treated timber. (does not contribute to the spread of fire)

There are more types of timber available and we are constantly increasing our certifications. Contact us for more information.
Certification & Test

Testing institute
Independent 3rd party institute.

BRE UK
Building science centre

DBI
Fire and securityRISE

RISE
The Swedish Research Institute

MPA Eberswalde
Materialprüfanstalt Brandenburg

AIDIMME
Instituto Tecnológico

WFR-Gent

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Disclaimer: Burnblock® updates technical information as and when necessary. Please ensure you have the latest revision of this datasheet. www.burnblock.com

Contact

Do you wish to receive more information or advice concerning the reaction to fire classes, don't hesitate to contact our Technical sales advisor.