Fire Rating Of Sheet Metal Ductwork

But when it is used one on each side of a properly framed wall it can become a fire rated wall.

Fire rating of sheet metal ductwork.

One sheet of 5 8 type x sheetrock has no fire rating. Sheet metal penetrations are used in rated assemblies and when correctly fire caulked become part of that assembly. They are usually 10 x 10 sized ducts. Galvanized steel ducts fire rating.

Flameshield we are one of only a few uk companies licensed to manufacture flameshield fire rated ductwork compliant to bs 476 part 24. Like show 1 like 1. When 28 gauge steel deck is used the restrained assembly rating 1 1 2 hr. Fire ratings are based on an assembly.

There are some fire tested wall assemblies that are tested with air duct passing through it. This is a non coated certified fire rated ductwork system made from galvanised sheet metal on our dedicated machinery which delivers performance and reliability expected of a leading brand. Rated floors often use sheet metal pan decking most often with a pour of light weight or standard concrete on top. I am not aware of a fire rated wall assembly using sheet metal.

The fire tests conducted by swri indicate the 22 gauge metal duct will provide at least a 2 hour fire rating between the fire damper and the barrier. Question asked by sahawnehmajdi on sep 30 2019 latest reply on oct 5.