29 Gauge Sheet Metal Fire Rating

Metal roof systems are required to be fire classified because of the concern about the combustibility of the materials under the metal panels.

29 gauge sheet metal fire rating. The ratings are for unsymmetrical walls that require ratings from both sides. The mbma fire tests of exterior walls in 1997 resulted in a new uldesign no. Each gauge represents a nominal decimal range. 2 1 2 corrugated 29 gauge.

For example a 26 gauge steel panel can range between 0 0179 and 0 0217 inches thick according to a university. Fire resistance classifications the 2012 and 2015 ibc in section 1505 of chapter 15 states that fire classification of roof assemblies is based on two tests astm e108 and ul 790 that are. Fire ratings are based on an assembly. Fire resistance ratings for proprietary designs could be found in special directories published by respective testing laboratories e g.

Asce sfpe 29 99 standard calculation methods for structural fire protection structural engineering institute of the american society of civil engineers reston va 1998. I am not aware of a fire rated wall assembly using sheet metal. But when it is used one on each side of a properly framed wall it can become a fire rated wall. When 9 16 inch steel deck is used the restrained assembly rating 1 1 2 hr.

Most steel roof systems do carry class a ratings. Sheet metal penetrations are used in rated assemblies and when correctly fire caulked. 36 nor clad 29 gauge. 36 strata rib 29 gauge.

Fire ratings are granted to metal roofing based upon the roof assembly so you do not need to worry about different ratings between the covering and the system. Manufacturers express the thickness of metal panels as their gauge with 22 gauge being the thickest and 29 gauge the thinnest of traditionally sold metal roof and wall panels. Expanded ul fire rating asc building products produces produces metal roofing and metal wall panels for the residential commercial and agricultural applications. The gauge of a metal roof refers to its thickness and the higher the gauge the thinner the metal.

One sheet of 5 8 type x sheetrock has no fire rating. To obtain information and requirements related to fire ratings on various metal roofing profiles you will need to contact the manufacturer.