---
title: "FM Approved Assembly: # 309059-0-0 (FA-CB-RI-TB-S)"
description: "IB Roof Systems is pleased to announce the release of a new FM approved assembly # 309059-0-0 (FA-CB-RI-TB-S). We now have testing data for a fully adhered"
---

[News ](https://ibroof.com/news)

# [FM Approved Assembly: # 309059-0-0 (FA-CB-RI-TB-S)](https://ibroof.com/news/fm-approved-assembly-309059-0-0-fa-cb-ri-tb-s)

 Written by [IB Roof](https://ibroof.com/news/author/ib-roof) | Apr 1, 2016 4:00:00 AM

IB Roof Systems is pleased to announce the release of a new FM approved assembly # 309059-0-0 (FA-CB-RI-TB-S). We now have testing data for a fully adhered membrane assembly over cover-board, extruded insulation, and thermal barrier, over a steel deck. System Overview:

- This system is only for new or tear-off applications.
- It features a fully adhered [single-ply membrane](https://www.ibroof.com/pvc-roofing-membranes) or fleeceback membrane in 50, 60, or 80 mil thickness using an approved IB membrane adhesive.
- One, or more, layer(s) of an approved cover-board and insulation is secured using an approved IB insulation adhesive.
- One, or more, layer(s) of an approved thermal barrier is mechanically attached with IB #12 fasteners and 3'' steel insulation plates.
- Deck Type: 22 ga, type B, grade 33 steel
- Fire Rating: Class 'A' up to 2:12 slope

   For more information on this FM approved assembly and others, please contact the IB Technical Department.  

[View full post](https://ibroof.com/news/fm-approved-assembly-309059-0-0-fa-cb-ri-tb-s)

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