Table of Contents

What does FM mean in roofing?

As you might guess, FM Global Insurance awards the lowest insurance rates available to building owners who construct and maintain their building in accordance with FM requirements. Thereby, adhering to Factory Mutual requirements is of utmost importance when working on the roof of an FM Global insured building.

What is FM 4470?

On October 18, 2012, FM officially notified roofing system manufacturers and component suppliers of the revised FM Approval Standard 4470 (FM 4470), Single-Ply, Polymer-Modified Bitumen Sheet, Built-Up Roof (BUR) and Liquid-Applied Roof Assemblies for Use in Class 1 and Noncombustible Roof Deck Construction.

What are FM ratings?

FM approvals is the independent testing arm of international insurance carrier, FM Global. FM approvals uses scientific research and testing to make sure products conform to the highest standards for safety and property loss prevention. Products that pass get the “FM APPROVED” mark.

What are FM Global standards?

This business unit sets standards of excellence and certifies products and services for companies worldwide. When you see a product or service with the FM APPROVED mark, you’ll know it meets our high property loss prevention product testing and certification standards.

What is a Class 1 roof?

A Class 1 roof has undergone a series of tests that evaluate the entire roof assembly, including the external spread of flame test utilized for the Class A rating. All Class 1 roof assemblies are Class A roofs, but not all Class A roof systems meet the Class 1 rating.

What is uplift on a roof?

Wind uplift is created when the air pressure below the roofing system is higher than the air pressure above the roof. The combination of negative pressure above and positive pressure below the roofing surface results in a “push-pull” force working together to separate the roofing materials from the roof deck.

What is ul790?

UL 790: Fire Tests of Roof Coverings (Building Integrated Photovoltaics products only) Scope: These tests are required for the fire resistance performance of roof coverings exposed to simulated fire sources originating from the outside of a building.

What is ul580?

Standard: UL 580 – Standard for Safety Tests for Uplift Resistance of Roof Assemblies. Scope: The test method is used to evaluate the wind uplift resistance of roofing assemblies when subjected to dynamic, and static wind loads.

How do I get FM approved?

Here’s our five-step process.

  1. Manufacturer Request.
  2. Proposal Issue and Manufacturer Authorization.
  3. Review, Testing and First Audit.
  4. Report, FM APPROVED Mark and Listing.
  5. Surveillance Audits.

How do I get FM certified?