Interpretation #7400

Original Request

Code Version: 2010
Code: BUILDING
Code Description: Building
Chapter: 1
Section: 107.2.1.2
Topic: Thatch roofing

Question

Is it the intent of the Florida Building Code section 107.2.1.2, to require a product evaluation for all roofing materials, including thatch "Palm frons"?

Answer Published 09/19/2014 at 11:03 AM

Yes, section 107.2.1.2 requires the construction documents
to show how the roofing product meets all code
requirements. This includes a product evaluation by the
architect or engineer.

The exception to this is a chikee hut installed by
Miccosukee or Seminole Tribe of Florida in compliance with
the exception. This means only an unfinished floor, no
electrical, mechanical or plumbing.

Commentary

The product approval system developed by the state is a way for manufacturers to get their product evaluated one time and be recognized and possibly accepted through out the state. Product approval is solely the responsibility of the AHJ. The state product approval system is just one tool for the AHJ. So if the product does not have a FBC product approval number, there is an accepted process for the AHJ to review and approve a product. Not sure if the requirement for product approval holds true for the use of natural thatch with a specific statement from the architect or engineer, this is up to the AHJ or may require a DEC statement. There are a number of manufactured "thatch" materials that simulate thatch. After Andrew, there were a number of structures with thatch roofs that survived the winds. The wind simply blew through the thatch. Another issue may be the fire issue with natural thatch on an assembly occupancy.