TL-0006 - UL Approval Class A Fire Rating Technical Letter

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Bituthene® 3000 Membrane, Bituthene® Low Temperature Membrane and/or Bituthene® System 4000 Membrane carry the Underwriters Laboratory Class A Fire Rating (Building Materials Directory, File #R7910) when used in either of the following constructions:

  • Limited to noncombustible decks at inclines not exceeding 0.25 in. (6 mm) to the horizontal 1 ft (0.3 m). One layer of Bituthene® waterproofing membrane, followed by one layer of 0.125 in. (3 mm) protection board, encased in 2 in. (50 mm) minimum concrete monolithic pour.
  • Limited to noncombustible decks at inclines not exceeding 0.25 in. (6 mm) to the horizontal 1 ft (0.3 m). One layer of Bituthene® waterproofing membrane, followed by one layer of DOW Styrofoam PD Insulation Board [2 in. (50 mm) thick] and covered with one layer of 2 ft x 2 ft x 2 in. (0.6 m x 0.6 m x 50 mm) of concrete paver topping.

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GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 450, Alpharetta, GA 30009, USA
GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.
This document is only current as of the last updated date stated below and is valid only for use in the Canada. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on www.gcpat.com. Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.

Last Updated: 2023-06-29

https://ca.gcpat.com/en/solutions/products/bituthene-post-applied-waterproofing/tl-0006-ul-approval-class-a-fire-rating