History: Below is a listing of the Revisions and Changes made to this UFGS.
|KEY||PREPARING ACTIVITY (PA)||A Army||N Navy||F Air Force||S NASA|
|ACTION||N New||R Revision||C Change||D Deletion|
|Release||PA||Date||Action||Change #||Nature of Change or Revision|
Added notes throughout the specification and notes to the specifier prohibiting torch application of the roofing system when the roof deck, the materials used in the installation of the roofing system, or the existing roof deck or materials are combustible as defined by NFPA 101. Added required submittal to Submittals Article (1.3) of torch applicators CERTA card. Added requirement in paragraph "Preroofing Conference" (1.4.8-g). for torch operator to attend the preroofing conference. Added requirement in paragraph "Fire Watch" (1.7.2) for the use of thermal heat imager during the firewatch.
Sustainability updates required to coordinate with the Federal Codes and DoD policies and procedures.
Changed Material Safety Data Sheets (MSDS) to Safety Data Sheets (SDS).
Fixed typo under "Substrate Preparation. Changed "Don not" to "Do not"
Modified note before Part 1, subparts 1.2, 1.7.1, 1.9.1, 1.12, 2.1 efg
Reference changed from FM AS 4470 to FM 4470
Incorporated NASA requirements
Added English and metric tags throughout.