Fm Global Class 1 Roof

4435 for roof flashing.

Fm global class 1 roof. The standard applies to all components as assembled in the system below the roof cover. The best rating achieved is class a which is described by ul as effective against severe fire exposure class 1 rating. To be rated as a class 1 panel roof assembly only class 1 approved components may be used. According to the scope of fm 4470.

The performance of a panel roof depends in part on all. According to the scope of fm 4470. Roofnav can take the guesswork out of configuring an fm approved roofing system leaving you to focus on what matters most. Fm approved roof assemblies must conform to one or more approval standards which include approval standards 4450 for class 1 insulated steel deck roofs approval standard 4470 for class 1 roof covers approval standard 4471 for class 1 panel roof or approval classification standard no.

Fm approval standard 4880 class 1 fire rating of insulated wall or wall roof ceiling panels interior finish materials or coatings and exterior wall systems. A class i insulated steel roof deck is one which meets the criteria of this standard for fire wind uplift live load resistances corrosion of metal parts and fatigue of plastic parts. A perfect example of this occurs frequently on the west coast where half inch plywood is commonly used for roof deck construction. The class 1 rating is an exclusive designation that can only be awarded by fm global which indicates the successful testing of the entire roof assembly using fm approval standard 4470.

However in many instances these non fm global insured buildings do not meet fm approvals minimum requirement for roof decks etc yet the designer still calls for an fm approved system. This standard applies to any component intended for use in assembling a panel roof including metal and plastic panel roofs. Fm global property loss prevention data sheet 1 28 wind design. Class 1 the class 1 label is an exclusive designation that can only be awarded by fm global.

The assembly which exhibits low fire spread below and above the panel adequate simulated wind uplift resistance and adequate strength and durability during the approval examination will qualify as a class 1 assembly. Fm global conducts research for use in the data sheets that our engineering field staff use to support our client s efforts to protect their business. Fm global property loss prevention data sheet 1 31 metal roof systems. The research is also used to enhance external standards and codes.

This test is significant as it indicates the successful testing of the entire roof assembly using fm approval standard 4470.