UL 790 BULLETIN-2008
UL Standard for Safety for Standard Test Methods for Fire Tests of Roof Coverings (COMMENTS DUE: September 16@ 2008)

Standard No.

UL 790 BULLETIN-2008

Release Date

2008

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2012-12

Replace By

UL 790 BULLETIN-2012

Latest

UL 790-2022

Scope

These requirements cover the fire resistance performance of roof coverings exposed to simulated fire sources originating from outside a building on which the coverings are installed. They are applicable to roof coverings intended for installation on either combustible or noncombustible decks (see 1.7) when the roof coverings are applied as intended. Three classes of fire exposure are described. Class A roof coverings are effective against severe fire test exposures. Under such exposures@ roof coverings of this class afford a high degree of fire protection to the roof deck@ do not slip from position@ and are not expected to produce flying brands. Class B roof coverings are effective against moderate fire test exposures. Under such exposures@ roof coverings of this class afford a moderate degree of fire protection to the roof deck@ do not slip from position@ and are not expected to produce flying brands. Class C roof coverings are effective against light fire test exposures. Under such exposures@ roof coverings of this class afford a light degree of fire protection to the roof deck@ do not slip from position@ and are not expected to produce flying brands. Tests conducted in accordance with these requirements are intended to demonstrate the performance of roof coverings during the types and periods of fire exposure involved@ but are not intended to determine the acceptability of roof coverings for use after exposure to fire. These fire test methods do not provide a basis to compare expected performance under all actual fire conditions but they do provide a basis for comparison of the response of roof coverings when subjected to fire sources that are described herein. A combustible deck is formed of wood (sheathing boards or plywood). A noncombustible deck is formed of metal@ concrete@ or poured gypsum.

UL 790 BULLETIN-2008 history

• 1970 UL 790-2022 Tests for fire resistance of roof covering materials
• 2018 UL 790 BULLETIN-2018 UL Standard for Safety Standard Test Methods for Fire Tests of Roof Coverings (COMMENTS DUE: August 6@ 2018)
• 2014 UL 790 BULLETIN-2014 UL Standard for Safety Standard Test Methods for Fire Tests of Roof Coverings (COMMENTS DUE: June 16@ 2014)
• 2013 UL 790 CRD-2013 Section / Paragraph Reference: 4.4.1 Subject: Preparation / Application of Test Samples (Edition 8: April 22, 2004)
• 2013 UL 790 BULLETIN-2013 UL Standard for Safety Standard Test Methods for Fire Tests of Roof Coverings (COMMENTS DUE: July 01@ 2013)
• 2012 UL 790 BULLETIN-2012 UL Standard for Safety for Standard Test Methods for Fire Tests of Roof Coverings (COMMENTS DUE: February 12@ 2013)
• 2008 UL 790 BULLETIN-2008 UL Standard for Safety for Standard Test Methods for Fire Tests of Roof Coverings (COMMENTS DUE: September 16@ 2008)
• 2004 UL 790-2004 UL Standard for Safety for Standard Test Methods for Fire Tests of Roof Coverings Eighth Edition
• 2003 UL 790 BULLETINS-2003 9/30/2003 (22p); 2/21/2003 (66p)
• 2002 UL 790 BULLETINS-2002 1/31/2002 (28p)
• 2002 UL 790 BULLETIN-2002 UL Standard for Safety Standard Test Methods for Fire Tests of Roof Coverings
• 2000 UL 790 BULLETIN-2000 UL Standard for Safety Standard Test Methods for Fire Tests of Roof Coverings
• 1997 UL 790-1997 Tests for fire resistance of roof covering materials
• 1995 UL 790-1995 UL Standard for Safety Tests for Fire Resistance of Roof Covering Materials (Sixth Edition)
• 1983 UL 790-1983 Tests for fire resistance of roof covering materials