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Standard 790, Edition 8

Standard for Standard Test Methods for Fire Tests of Roof Coverings

UL CSDS Proposal
Standard 790, Edition 8 Edition Date: September 27, 2013
Summary of Topics b0790_8_20130927_sum.html

Subject 790

Bulletin Dated: September 27, 2013

SUMMARY OF TOPICS

The following changes in requirements to the Standard Test Methods for Fire Tests of Roof Coverings, UL 790, are being proposed:

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.

Back to Standard 790, Edition 8

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