1. SCOPE 1.1 This method of test for surface burning characteristics of building materials is
applicable to any type of building material that, by its own structural qualities or the manner in
which it is applied, is capable of supporting itself in position or may be supported in the test
furnace as described in this standard or in a manner comparable to its recommended use. 1.2 The following materials shall be tested and classified in accordance to
CAN/ULC-S102.2: A Materials which cannot be tested as described in Clause 1.1 without the
use of supporting material that is not representative of the intended
installation; B Materials which, when tested in the manner described in Clause 1.1, melt
and drip, or otherwise disintegrate and continue to burn on the floor of the
test chamber;
C Materials that are designed for use in a relatively horizontal position with
only its top surface exposed to air; or
D Thermoplastic materials. 1.3 For material with a low thermal inertia which demonstrate anomalous behaviour
in the test chamber, the materials shall additionally be tested in accordance with
CAN/ULC-S127 (see Appendix C). 1.4 The primary purpose of the test is to determine the comparative burning
characteristics of the material or assembly under test by evaluating the flame spread over its
surface when exposed to a test fire and thus establish a basis on which surface burning
characteristics of different materials or assemblies may be compared, without specific
considerations of all the end use parameters that might affect these characteristics. 1.5 Smoke Developed Value (SDV) and Flame Spread Value (FSV) are recorded in
this test. However, there is not necessarily a relationship between these two measurements. 1.6 It is the intent of this method to register performance during the period of
exposure, and not to determine suitability for use after the test exposure. 1.7 This method does not establish standards of performance for specific
applications. It is a means of evaluating the response of materials, products or assemblies to a
particular fire exposure under controlled laboratory conditions.