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Standard 790, Edition 8

Standard for Tests for Fire Resistance of Roof Covering Materials

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Standard 790, Edition 8 Edition Date: July 29, 2014
Summary of Topics s0790_8_sum.html

Summary of Topics

These revisions to ANSI/UL 790 include the following changes in requirements:

1. Revisions to the Scope to clarify that the standard covers relative fire characteristics, so as not to be confused with the term “fire resistance”.

2. Revisions to several sections covering a) the required number of assemblies to be tested and b) that the requirements shall be applied in sequence.

3. Revisions that clarify sample preparation.

4. Addition of a new requirement covering conditioning of the self-sealing shingle test decks at a temperature of 135 to 140°F (57 to 60°C) for a continuous period of 16 hours.

5. Minor clarifications and formatting revisions.

6. Revisions to clarify that the spread of flame observations are made during the test, not after the test has ended.

7. Revisions of the burning-brand test covering the placement of the Class A and Class B brands.

8. Revisions to the test report to require that the climactic conditions for the weathering exposure shall be reported.

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