Fm Global Roof Drainage Requirements

All canales and scuppers must have positive drainage.

Fm global roof drainage requirements.

Your roof needs replaced. Roofnav can take the guesswork out of configuring an fm approved roofing system leaving you to focus on what matters most. Increasing from the 5 drain shown to a 6 drain increases the roof area that can be served by about 1 6 x the table data. A common mistake made when these documents are not followed is that roof edge fascias end up being inadequately secured says judd peterson aia president of judd allen group edina minn.

Since reroofing represents roughly seventy percent of the roofing contracts in the market each year we ll use it as a case study to illustrate the detailed knowledge required to meet factory mutual standards. Your insurance provider is fm global. Reference fm global data sheet 1 54 3. Roofnav i s recommended for the selection of fm approved roof assemblies.

This section contains reports that are generated to update national and international codes and standards. For guidelines on designing roof drainage systems see fm global s ds 1 54 roof loads for new construction data sheet. Fm global is a commercial and industrial property insurance company that according to its website is guided by the belief that most losses can be prevented. Fm approved pv modules are recommended to fm global clients worldwide the hazards as energy costs rise and pressure mounts to offset or reduce greenhouse gas emissions a growing number of corporations utilities and municipalities are turning to photovoltaic pv systems to turn sunshine directly into electricity.

Refer to the nrca roofing manual and fm global property loss prevention data sheets. All canales and or scuppers must have a metal pan lining extending not less than 6 inches 152mm past the inside of the parapet and not less than 6 inches 152mm from each side of the canale or scupper opening. 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. Here s what that means.

Dropping from the 5 drain in the table to a 3 drain cuts the serviced or drainable roof area to about 0 26 x the roof areas shown in the table. Fm global is influencing our industry tremendously by codifying or standardizing roof designs mandating safer fire and wind rated roofs. Thereby adhering to factory mutual requirements is of utmost importance when working on the roof of an fm global insured building. Roof specifications and roofnav assembly number fm global form 2688 application for acceptance of roofing systems should be completed for each type of roof covering system for each building.

You have to sign up in order to view data sheets on the fm global website but it s free and definitely worth your time. The research is also used to enhance external standards and codes.