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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: May 31, 2013
Summary of Topics b0790_8_20130531_sum.html

Subject 790

Bulletin Dated: May 31, 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 for preliminary review and comment only:

1. For Preliminary Review Only: 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. For Preliminary Review Only: Revisions to several sections covering a) the required number of assemblies to be tested and b) that the requirements shall be applied consecutively.

3. For Preliminary Review Only: Revisions that clarify sample preparation.

4. For Preliminary Review Only: 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. For Preliminary Review Only: Minor clarifications and formatting revisions.

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

7. For Preliminary Review Only: Revisions of the burning-brand test covering the placement of the Class A and Class B brands.

8. For Preliminary Review Only: 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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