UL PRODUCT CATEGORY

[Building Materials] (Surface-burning Characteristics) Gypsum Board, BWFR


See General Information for Surface-burning Characteristics

803.12506

GENERAL

This category covers gypsum board of various thicknesses consisting of cores primarily of gypsum, but with various additives, certified as to surface-burning characteristics as indicated in the individual certifications. Material identified as form board is intended to support wet gypsum concrete as it is poured in place for use in roof constructions.

Some gypsum board is provided with facings that may affect the contribution of combustibles under fire conditions. This effect is determined by testing the sample with a longitudinal butt joint, constructed by slitting the facing or by using factory or field joint (if applicable).

The insulating, acoustical, structural, toxicity of the products of combustion and other properties have not been investigated.

The certifications are confined to the materials themselves and do not pertain to the structures in which the materials are installed.

Authorities Having Jurisdiction should be consulted before installation.

PRODUCT IDENTITY

The following product identity appears on the product:

    Gypsum Board

RELATED PRODUCTS

For the fire-resistance rating of these products, see Gypsum Board (CKNX).

ADDITIONAL INFORMATION

For additional information, see Surface-burning Characteristics (BIKT) and Building Materials (AABM).

REQUIREMENTS

The basic standard used to investigate products in this category is ANSI/UL 723, "Test for Surface Burning Characteristics of Building Materials."

In addition to the surface-burning characteristics, where indicated in the individual certifications, the gypsum board (wallboard) core has also been certified to ANSI/ASTM E136, "Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C."

UL MARK

The Certification Mark of UL on the product is the only method provided by UL to identify products manufactured under its Certification and Follow-Up Service. The Certification Mark for these products includes the UL symbol, the words "CERTIFIED" and "SAFETY," the geographic identifier(s), and a file number.

Additional Certification Markings

Products covered under this category are additionally marked with the following information:

AS TO SURFACE-BURNING CHARACTERISTICS
+
+ Flame-spread and smoke-developed values applicable to the product


The following statement may also be included:

WALLBOARD CORE ALSO CERTIFIED TO ANSI/ASTM E136
STANDARD TEST METHOD FOR BEHAVIOR OF MATERIALS
IN A VERTICAL TUBE FURNACE AT 750°C

or

WALLBOARD CORE ALSO CERTIFIED TO ANSI/ASTM E136

Alternate UL Mark

The Classification Mark of UL on the product is the only method provided by UL to identify products manufactured under its Classification and Follow-Up Service. The Classification Mark for these products includes the UL symbol, the word "CLASSIFIED" above the UL symbol (as illustrated in the Introduction of this Directory), and the following additional information:

GYPSUM BOARD
SURFACE BURNING CHARACTERISTICS
+
Issue No.

+ Flame spread and smoke developed values applicable to the product

The Classification Mark may also include the statement: WALLBOARD CORE ALSO CLASSIFIED IN ACCORDANCE WITH ASTM E136 STANDARD TEST METHOD FOR BEHAVIOR OF MATERIALS IN A VERTICAL TUBE FURNACE AT 750°C (or WALLBOARD CORE ALSO CLASSIFIED IN ACCORDANCE WITH ASTM E136).

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Last Updated on 2013-05-16
BWFR.GuideInfo BWFR Active 20130516 20121011

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