5.0 Flame Spread – either one of the following two standards:

5.1 ASTM E 162-2002, Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source.

5.1.1 Four test specimens (of each distinct product material) shall be tested in accordance with ASTM E 162. Where the test specimen is narrower than required by the test, several pieces may be grouped together to provide the necessary surface area. Thin gauge films and paints shall be tested when applied to a rigid cement board ¼" thick.

5.1.2 The specimens shall have a flame spread index (ls) not to exceed 35.

5.2 ASTM D 635-2003, Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position.

5.2.1 Ten test specimens shall be prepared for use in accordance with ASTM D 635.

5.2.2 The test specimens shall not burn beyond the 25 mm reference mark.

EXCEPTION: For photoluminescent products that, when installed, provide coverage exceeding the limits of interior trim, such products shall instead be tested for flame spread and smoke density as interior finishes and/or interior floor coverings if and as required by Building Code " 27-348(c) and (d) and/or " 27-351. Tread nosings with a horizontal depth of 4? or less and that contain a photoluminescent stripe may be tested in accordance with RS 6-1A.

 

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