CEN/TS 1187:2012

SLOVENSKI STANDARD
01-maj-2012
1DGRPHãþD
SIST ENV 1187:2003
SIST ENV 1187:2003/A1:2006
Preskusne metode za izpostavljenost streh požaru z zunanje strani
Test methods for external fire exposure to roofs
Prüfverfahren zur Beanspruchung von Bedachungen durch Feuer von außen
Méthodes d'essai pour l'exposition des toitures à un feu extérieur
Ta slovenski standard je istoveten z: CEN/TS 1187:2012
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.20 Strehe Roofs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 1187
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
January 2012
ICS 13.220.50; 91.060.20 Supersedes ENV 1187:2002
English Version
Test methods for external fire exposure to roofs
Méthodes d'essai pour l'exposition des toitures à un feu Prüfverfahren zur Beanspruchung von Bedachungen durch
extérieur Feuer von außen
This Technical Specification (CEN/TS) was approved by CEN on 23 August 2011 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 1187:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .5
Introduction .6
1 Scope .7
2 Normative references .7
3 Terms and definitions .7
4 Test 1: Method with burning brands . 10
4.1 Test equipment . 10
4.2 Calibration . 10
4.3 Test conditions (roof pitch) . 11
4.4 Test specimen . 11
4.4.1 General . 11
4.4.2 Selection of standard supporting decks . 11
4.4.3 Positioning of joints . 12
4.4.4 Edge detailing . 13
4.5 Conditioning . 13
4.5.1 Wood wool . 13
4.5.2 Test specimen . 13
4.6 Test environment . 13
4.7 Test procedure . 13
4.7.1 Filling the basket. 13
4.7.2 Positioning of the brand . 14
4.7.3 Start of the test . 14
4.7.4 End of the test . 14
4.8 Observations and measurements . 15
4.8.1 General . 15
4.8.2 External fire spread . 15
4.8.3 Fire penetration and openings . 15
4.8.4 Damage . 15
4.9 Test report . 16
4.10 Direct field of application of test results . 17
4.10.1 Roof pitch . 17
4.10.2 Nature of the deck. 17
5 Test 2: Method with burning brands and wind . 18
5.1 Test equipment . 18
5.2 Calibration . 19
5.2.1 Air velocity . 19
5.2.2 Propane supply . 21
5.2.3 Mechanical alignment . 21
5.3 Test conditions . 21
5.4 Test specimen . 21
5.4.1 Sampling . 21
5.4.2 Preparation of test specimens . 22
5.5 Conditioning . 22
5.5.1 Crib . 22
5.5.2 Test specimen . 22
5.6 Test environment . 22
5.7 Test procedure . 23
5.8 Observations and measurements . 24
5.9 Test report . 24
5.10 Direct field of application of test results . 25
6 Test 3: Method with burning brands, wind and supplementary radiant heat . 25
6.1 Test equipment . 25
6.1.1 Brands . 25
6.1.2 Wind . 25
6.1.3 Radiant panel . 26
6.1.4 Timing device . 26
6.1.5 Calibration element . 27
6.1.6 Specimen holder . 27
6.2 Calibration . 27
6.2.1 General . 27
6.2.2 Specimen holder . 27
6.2.3 Wind . 27
6.2.4 Radiant level . 27
6.3 Test conditions . 27
6.4 Test specimen . 27
6.4.1 General . 27
6.4.2 Selection of standard supporting decks . 28
6.4.3 Positioning of joints . 28
6.4.4 Edge detailing . 29
6.4.5 Protection of the edges. 29
6.5 Conditioning . 29
6.6 Test environment . 29
6.7 Test procedure . 29
6.7.1 Preparation of brands . 29
6.7.2 Start of the test . 30
6.7.3 Positioning of the brands . 30
6.7.4 End of the test . 30
6.7.5 Post test examination . 30
6.8 Observations and measurements . 30
6.8.1 General . 30
6.8.2 External fire spread . 30
6.8.3 Fire penetration and openings . 31
6.8.4 Damage . 31
6.9 Test report . 31
6.10 Direct field of application of test results . 32
6.10.1 Roof pitch . 32
6.10.2 Nature of the deck . 32
7 Test 4 – Method with two stages incorporating burning brands, wind and supplementary
radiant heat . 33
7.1 Test equipment . 33
7.1.1 Brands . 33
7.1.2 Wind . 33
7.1.3 Radiant panel . 33
7.1.4 Calibration element . 34
7.1.5 Timing device . 34
7.1.6 Specimen holder . 34
7.2 Calibration . 34
7.3 Test conditions . 34
7.4 Test specimen . 34
7.4.1 Number of test specimens . 34
7.4.2 Construction of specimens . 35
7.5 Conditioning . 36
7.6 Test environment . 36
7.7 Test procedure . 36
7.7.1 Preliminary ignition test with burning brands (stage 1) . 36
7.7.2 Penetration test with burning brands, wind and supplementary radiant heat (stage 2) . 37
7.7.3 End of test . 37
7.8 Observations and measurements . 37
7.8.1 General . 37
7.8.2 Preliminary ignition test with burning brands (stage 1) . 37
7.8.3 Penetration test with burning brands, wind and supplementary radiant heat (stage 2) . 37
7.9 Test report . 38
7.10 Direct field of application of test results – Roof pitch . 38
8 Figures . 39
8.1 Test 1 . 39
8.2 Test 2 . 44
8.3 Test 3 . 51
8.4 Test 4 . 57
Bibliography . 60

Foreword
This document (CEN/TS 1187:2012) has been prepared by Technical Committee CEN/TC 127 “Fire safety in
buildings”, the secretariat of which is held by BSI.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes ENV 1187:2002.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus,
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Introduction
The first mandate given to CEN/TC 127 on fire resistance testing (Mandate No. 117) in support of the
Construction Products Directive required two test methods for external fire exposure to roofs. One test method
was to include the effect of a burning brand, the other was to include the effect of a burning brand together
with wind and supplementary radiant heat. These two draft methods were circulated for the CEN 6-month
enquiry, but many countries did not support the two and several countries requested that only one method
should be prepared by CEN.
The topic was referred to the EC Fire Regulators' Group. Discussions took place in both the Fire Regulators'
Group and the Standing Committee on Construction, and in April 1997 CEN/TC 127 was requested to
produce a standard incorporating the two existing draft methods and the Nordtest method.
The Standing Committee accepted this as a short-term solution and strongly expressed the view that a truly
harmonised test procedure should be developed in the long term, i.e. a single test procedure for this
characteristic.
Realizing that the three test method document (ENV 1187:2002 dated May 2002) and the Amendment A1
(ENV 1187:2002/A1 dated August 2005) did not have the same time scale, it was decided to consider all four
methods under the same procedure.
This Technical Specification will be followed by a single test procedure required by the European Commission.
CAUTION — The attention of all persons concerned with managing and carrying out these tests is
drawn to the fact that fire testing can be hazardous and that there is a possibility that toxic and/or
harmful smoke and gases can be evolved during the test.
An assessment of all potential hazards and risks to health should be made and safety precautions
should be identified and provided. Written safety instructions should be issued. Appropriate training
should be given to all relevant personnel. Laboratory personnel should ensure that they follow written
safety instructions at all times.

1 Scope
This Technical Specification specifies four methods for determining the performance of roofs to external fire
exposure. The four methods assess the performance of roofs under the following conditions:
a) test 1 – with burning brands;
b) test 2 – with burning brands and wind;
c) test 3 – with burning brands, wind and supplementary radiant heat;
d) test 4 – with two stages incorporating burning brands, wind and supplementary radiant heat.
The tests assess the fire spread across the external surface of the roof, the fire spread within the roof (tests 1,
2 and 3), the fire penetration (tests 1, 3 and 4) and the production of flaming droplets or debris falling from the
underside of the roof or from the exposed surface (tests 1, 3 and 4).
Tests 2 and 3 are not applicable to geometrically irregular roofs or roof mounted appliances, e.g. ventilators
and roof lights.
NOTE The four tests listed above do not imply any ranking order. Each test stands on its own without the possibility
to substitute or exchange one for another.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 13238:2010, Reaction to fire tests for building products ― Conditioning procedures and general rules for
selection of substrates
EN 13501-1:2007+A1:2009, Fire classification of construction products and building elements ― Part 1:
Classification using data from reaction to fire tests
EN 13501-5:2005+A1:2009, Fire classification of construction products and building elements ― Part 5:
Classification using data from external fire exposure to roofs tests
EN ISO 13943:2010, Fire safety — Vocabulary (ISO 13943:2008)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 13943:2000 and the following
apply.
3.1
roof
covering and sealing system including any insulating layers or vapour barriers normally provided together with
their supporting elements including attachment (glued, mechanically fastened, etc.), and roof lights or other
closures for roof apertures that are intended to provide a weatherproof surface
3.2
material
basic single substance or uniformly dispersed mixture of substances (e.g. metal, stone, wood, bitumen,
concrete, mineral wool)
3.3
damaged material
3.3.1
damaged material including melting
material that has been burnt, charred, melted or otherwise visually changed by heat
NOTE Discolouration and soot deposits should not be regarded as damage. Areas of the roof covering surface in
which combustion has not occurred should not be regarded as damaged (e.g. areas which have only become shiny or
only have tiny occasional holes or bubbles).
3.3.2
damaged material not including melting
material that has been burnt or otherwise visually changed by heat, excluding melting
NOTE Discolouration and soot deposits should not be regarded as damage. Areas of the roof covering which have
only become shiny or only have tiny occasional holes or bubbles should not be regarded as damaged.
3.4
burnt material
material that has been destroyed by combustion or pyrolysis
3.5
composite
combination of materials which is generally recognized in building construction as a discrete entity
EXAMPLE Coated or laminated products such as roofing felts.
3.6
assembly
fabrication of materials and/or composites
EXAMPLE Sandwich panels.
3.7
product
material, composite or assembly about which information is required
3.8
specimen
representative section of the roof/roof covering prepared for the purpose of the test
3.9
continuous deck
element with a continuous supporting function in which the gap between adjacent elements is not greater than
0,5 mm ((5,0 ± 0,5) mm in the case of wooden planks with plain edges)
3.10
exposed surface
external surface of the specimen which is subject to the heating conditions of the test
3.11
measuring zone
area of the specimen within which measurements are made
3.12
underside
bottom surface of the specimen
3.13
sustained flaming
flames arising from an observed location, which persist for 5 s or longer
3.14
external fire spread
progression and extent of sustained flaming across the exposed surface of the specimen
3.15
fire penetration
appearance on the underside of the specimen of any sustained flaming or glowing due to combustion
including the occurrence of any flaming droplets falling from the underside
NOTE Charring and/or discolouration should not be regarded as fire penetration (for test 1 and test 3).
3.16
opening
appearance during the test of any hole greater than 25 mm in area or any crack greater than 2 mm wide,
which penetrates completely through the specimen and which would allow burning material to fall through the
roof
3.17
internal damage
extent of damaged material in each layer inside the specimen, measured from the edges of the projection of
the ignition source in the upwards and downwards directions with respect to the pitch of the roof
3.18
fire spread within the roof
internal fire spread
maximum burnt length measured from the upper edge of the projection of the ignition source in the upward
direction and from the lower edge in the downward direction of each layer for sloped roofs, and in any
direction for horizontal roofs
NOTE See 4.8.1.
3.19
flaming droplets or debris
burning material falling from the specimen that continues to burn on the floor for at least 5 s
3.20
joint
kind of connection or link within a layer in the roof, such as overlap or seams
3.21
roof covering
uppermost layer of a roof
NOTE This layer can comprise single layer or multiple layer coverings.
3.22
damaged length
length of damaged material of the roof covering and the substrate respectively, expressed in millimetres as
measured from the centre of the wood crib position (for test 2)
3.23
substrate
product which is used immediately beneath the roof covering, about which information is required (for test 2)
3.24
roof pitch
inclination of the roof surface to the horizontal
3.25
non-combustible product
product which satisfies reaction to fire class A1 or A2-s1,d0 according to EN 13501-1:2007+A1:2009
3.26
combustible product
product not satisfying the definition of non-combustible product
3.27
penetration by fire
appearance on the underside of the specimen of any flaming or glowing other than that of the test flame,
disregarding any test flame appearing through pre-existing openings in the test specimen (for test 4)
4 Test 1: Method with burning brands
4.1 Test equipment
4.1.1 Basket, as shown in Figure 1.
The basket shall be made from 3 mm diameter mild steel wire forming a mesh of approximately 50 mm × 50
mm. The basket shall be open at the top and bottom and have four projecting feet 10 mm long, one at each
corner. The outer dimensions of the basket shall be 300 mm × 300 mm × 200 mm deep. The mass of the
basket shall be (650 ± 50) g.
4.1.2 Wood wool.
Wood wool shall consist of fibres approximately 2 mm wide × 0,2 mm to 0,3 mm thick and be manufactured
from softwood, e.g. spruce, pine or fir.
4.1.3 Balance.
The balance is used to weigh the wood wool. It shall have a nominal capacity of at least 2 kg and an accuracy
of ± 1 g.
4.1.4 Timing device.
A timing device with an accuracy of ± 5 s over 24 h shall be used.
4.2 Calibration
Each new batch of wood wool shall be checked by carrying out a control test as follows: A sample of calcium
silicate board as described in 4.4.2.2, c), measuring 1 m × 1 m shall be supported horizontally at a height of
about 1 m above the floor. A basket filled with conditioned wood wool as described in 4.5.1 and 4.7.1 shall be
placed at the centre of the board and ignited as described in 4.7.3. The burning time shall be measured from
the commencement of ignition until the final flame extinguishes.
Three separate tests shall be carried out. The calcium silicate board used shall be cooled down between the
tests. If the range of the burning times recorded is greater than 2 min, a further three tests shall be conducted.
The mean burning time for all performed tests shall be calculated and shall lie within the range of 4 min to
5 min.
4.3 Test conditions (roof pitch)
Roofs intended to be installed with pitches up to 20° in practice shall be tested at a pitch of 15°. Roofs
intended to be installed with pitches greater than 20° shall be tested at a pitch of 45°.
In special cases (e.g. where proof for a specific type of roof is to be provided), by way of departure from the
specifications regarding roof pitches, verification of the resistance of a roof to burning brands may also be
carried out by testing at the actual intended roof pitch. The test results so obtained shall then be valid only for
the roof pitch tested.
4.4 Test specimen
4.4.1 General
Four specimens with minimum dimensions 0,8 m in width × 1,8 m in length shall be prepared under
appropriate supervision by the laboratory for each roof pitch to be tested.
Roof lights shall be tested in the original size, with a waterproofing system attached as in practice.
The specimens shall be representative, in all details of practical application (except for the standard
supporting deck), with regard to both the support, and the type and number of layers of roofing materials
(including any insulation, vapour barriers, etc.), and with regard to the joining of those layers. An example
specimen section is shown in Figure 2.
Joints have to be provided in the several layers forming the specimen. The positioning of the joints shall follow
4.4.3.
4.4.2 Selection of standard supporting decks
4.4.2.1 General
When the product being evaluated is a roof covering system intended for general application over a variety of
decks (see 4.10), the test deck shall be selected in accordance with either 4.4.2.2, b) or 4.4.2.2, c).
4.4.2.2 Roof coverings intended to be installed over continuous decks
a) In the case of roof coverings intended to be installed over a continuous deck which is not profiled, a roof
deck in accordance with either 4.4.2.2, b) or 4.4.2.2, c) shall be used. If the materials are to be laid over a
profiled steel deck, then a trapezoidal profiled steel deck, in accordance with 4.4.2.2, d) shall be used.
b) If it is intended to simulate a wooden continuous deck with a gap not exceeding 0,5 mm, the wood particle
board deck shall be constructed from planks 250 mm wide × 16 mm thick running parallel to the eaves
with plain edges and tightly butt jointed so that the gaps between planks do not exceed 0,5 mm.
If it is intended to simulate a deck made of narrow solid wood planks, the gaps between the particle board
panels shall be (5,0 ± 0,5) mm.
The wood particle board shall consist of wood particles bonded with polymer adhesive (e.g.
ureaformaldehyde); it shall have a density of (680 ± 50) kg/m and shall not be treated with fire
retardants.
c) If roofing materials are intended to be laid only on continuous, non combustible deck with a minimum
thickness of 10 mm, then the deck shall consists of a (11 ± 2) mm thick reinforced calcium silicate board,
density (870 ± 50) kg/m (EN 13238:2010, 5.3, Table 1).
d) The trapezoidal profiled steel deck shall have the width of the crown approximately equal to 50 % of the
pitch and a trough depth of approximately 100 mm. The corrugations shall run parallel to the eaves and
be open at the ends.
4.4.2.3 Roof coverings intended to be installed without a continuous deck
The spacing of roof supports of any type shall be in accordance with the maximum permissible spans
proposed by the manufacturer for the particular application but not exceeding the minimum dimensions
prescribed for the specimen in 4.4.1.
4.4.3 Positioning of joints
4.4.3.1 Specimen types
The five types are illustrated in Figure 3.
Type 1: Single central joint in the top layer parallel to the roof pitch. No joints are required in any other layer
(including insulation).
Type 2: Single joint in the top layer at 90° to the roof pitch 100 mm above the lower edge of the basket. No
joints are required in any other weathering layer. A single central joint in the insulation parallel to the roof pitch
shall be provided, where applicable (see Table 1). The joint shall extend from 100 mm below the lower edge
of the basket to 800 mm above the upper edge of the basket.
Type 3: No joint is required in any of the weathering layers. A single central joint in the insulation parallel to
the roof pitch shall be provided, where applicable.
Type 4: A single central joint in the weathering layer parallel to the roof pitch next to the insulation. No joints
are required in any other layer (including insulation).
Type 5: A single central joint in the weathering layer parallel to the roof pitch next to the top layer. No joints
are required in any other layer (including insulation).
Where there are overlapping layers, the position of the joints shall be considered to be the edge of the upper
layer.
4.4.3.2 Types to be tested
According to the different compositions of roofs, test specimens described in Table 1 shall be tested.
Table 1 — Test specimens
Specimen type
st nd rd th
Roof covering 1 spec. 2 spec. 3 spec. 4 spec.
three or more layers 1 2 4 5
two layers 1 2 3 4
one layer 1 2 3 3
Where the dimensions of the elements of any of the layers are such that it requires more than four pieces to
cover the specimen, or if any of the layers are jointless, then the specimens shall be fabricated in such a way
that those layers are representative. In the first instance, at least one joint in the layer(s) concerned shall be
located underneath the basket.
4.4.4 Edge detailing
No special measures shall be taken by the sponsor to protect the edge of the specimen.
4.5 Conditioning
4.5.1 Wood wool
Before being stored, any compressed wood wool shall be loosened by pulling apart, but not to the extent that
the fibres are separated. Large pieces of unshredded wood shall be removed.
The wood wool shall not be selected for tests until the stabilized moisture content of a representative sample
lies within the range of 8 % to 12 % of the dry mass. This shall be determined by drying a 10 g to 20 g sample
in an oven at (105 ± 5) °C to constant mass. Wood wool used for this moisture content determination shall not
be used for the test.
A suitable amount of wood wool selected for the test shall be stored for at least 12 h in a room at a
temperature of (23 ± 2) °C and a relative humidity of (50 ± 5) %.
The wood wool shall not be exposed to a different atmosphere for a period of more than 1 h before the test is
carried out.
4.5.2 Test specimen
At the time of test, the test specimen shall be in equilibrium with the laboratory environment.
If the materials involved are likely to absorb or contain a significant amount of moisture (liable to influence the
test results), then extra care shall be exercised to ensure that the specimen is at this stable equilibrium. The
moisture content of these materials shall be measured and recorded at the time of test. Special samples may
be used for moisture content determination and may be conditioned with the test specimens. These special
samples shall be fabricated so as to represent the loss of water vapour from the specimen by having similar
thicknesses and exposed faces.
NOTE Normally the test specimen should be stored in the laboratory environment for at least 12 h before the start of
the test.
4.6 Test environment
Testing shall be carried out in a draught-free area, in an enclosure of not less than 150 m in volume. The
lower edge of the top surface of the specimen shall be (0,75 ± 0,25) m above the laboratory floor. The
temperature in the enclosure shall be (20 ± 10) °C prior to the fire test.
NOTE An exhaust hood can be fitted above the specimen provided it does not create a draught over the specimen.
4.7 Test procedure
4.7.1 Filling the basket
Wood wool specified in 4.1.2 and conditioned in accordance with 4.5.1 shall be uniformly pressed into the wire
frame basket, in at least six layers, until the mass of wood wool in the basket is (600 ± 10) g. The packed
volume of the wood wool shall correspond to the internal dimensions of the basket, excluding the feet.
4.7.2 Positioning of the brand
4.7.2.1 The basket filled with wood wool (the brand), shall be suspended with its base (excluding the feet)
parallel to the nominal slope of the specimen 10 mm from the surface of the specimen so that this position is
maintained throughout the test. On a curved surface the centre of the base of the basket shall be 10 mm
above the surface.
In cases where the weight of the basket will not affect the deformation of the roof or roof covering during the
test, the basket may be placed directly on the roof surface. Any device used to retain the basket shall not
interfere with the burning behaviour of the wood wool.
The brand shall be placed in accordance with Figure 4.
4.7.2.2 Roof lights shall be tested with the basket placed in turn at:
a) the upper edge of the roof light, where the slope is smallest (see position a, Figure 5);
b) the centre of the roof light (see position b, Figure 5);
c) the lower edge of the roof light, where the slope is greatest (see position c, Figure 5);
d) on the waterproofing attached to the lower side of the roof light and as close as possible to the upstand of
the roof light (see position d, Figure 5).
If the roof light consists of several segments joined together, the basket shall be positioned over the joint
closest to the centre in one of the tests.
A new specimen shall be used for each test if interference could exist between successive tests.
4.7.3 Start of the test
For each fire test, the brand shall be positioned on the specimen before ignition. The wood wool shall be
ignited with a small gas burner along the bottom of all four sides within a period of 10 s, commencing with the
upper side. The timing device shall be started at the commencement of the ignition of the wood wool.
4.7.4 End of the test
The duration of the test is 60 min, measured from the commencement of the ignition of the wood wool, unless
a longer test duration is requested by the sponsor. Surface flames still existing 30 min after the start of the test
shall be extinguished e.g. by applying a fire blanket, gaseous extinguishing agent, etc., taking care not to
influence any internal constructions. At the end of the test, the roof shall be opened and checked for non-
flaming fire propagation (glowing combustion) and any penetration. The result shall be reported, including the
time at which the roof was opened.
A test may be terminated earlier, if:
a) evidently there is no occurrence of fire (flames, glowing combustion, smoke);
b) the flames reached an edge of the sample;
c) penetration occurs; or
d) there is a risk to safety of personnel or impending damage to equipment.
4.8 Observations and measurements
4.8.1 General
The classification criteria are provided in EN 13501-5:2005+A1:
...