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Division B - Standards


Standard for TPO Membrane Roof Systems

How to use this Standard

The fourteen (14) Parts of this Standard contain the requirements, guiding principles, recommendations, and reference materials, necessary to design and construct a project that will qualify for a RoofStar 5-Year Guarantee, RoofStar 10-Year Guarantee, or RoofStar 15-Year Guarantee. Guarantee requirements for a RoofStar 15-Year Guarantee are identified in various Parts. All RoofStar 15-Year Guarantee requirements must be read together with the general requirements for each Part in this Standard.

Readers are advised to review relevant materials that can be accessed through the hyperlinks embedded in the body of text. Part titles shown in blue indicate hyperlinks to more relevant material that the reader is advised to consult.

Refer to Structure and Organization of RPM and Standards in Division A of this Manual for more information about this Standard.


© RCABC 2024
No reproduction of this Standard, in whole or in part, is lawful without the expressed permission of the RCABC.

Current editions and revisions
The content of this Standard was significantly revised and supplemented in November 2019 and is in effect January 1, 2020. Therefore, the reader should consider all of the content to be new since publication. Projects bid after November 30, 2019 must conform to the Standards published in this document.


Highlighted text within the body of the online Standard and its Parts indicates revisions made within the last twelve (12) months.

Click the icon below for a PDF copy of the current Standards published on this page. The reader is responsible to ensure that downloaded copies remain current with the online version of the Roofing Practices Manual. Only the online version of these or any other RoofStar Guarantee Standards shall be considered valid for the purpose of designing and constructing a RoofStar-qualified Project.

Standard for TPO Membrane Systems

This Standard was revised effective February 1, 2024 and replaces the Standard dated October 20, 2023.