Year: 2026

What is FM 1-49 for perimeter flashing?

FM 1-49, formally known as FM Global Property Loss Prevention Data Sheet 1-49, Perimeter Flashing, is a Factory Mutual (FM) guideline for designing and installing roof-edge flashing systems so they…

How does an FM-rated roof affect insurance premiums?

For commercial property owners, an FM-rated roof can do more than improve roof performance. It may also influence how an insurance carrier evaluates the building’s property-loss risk. In some cases,…