1 Hour Fire Rated Exterior Siding

Lantz boggio architects used lp flameblock fire rated osb sheathing as a code compliant component of both 1 hour and 2 hour ul listed fire rated wall assemblies.

1 hour fire rated exterior siding. It also allows for the use of fiberglass insulation. Fire 1 hour rated walls are designed to match all standard awip facing panels and finishes so you won t have to settle for comprised aesthetics. The ratings are for unsymmetrical walls that require ratings from both sides. Warnock hersey fire resistance rated wall assemblies warnock hersey product listings standards products are certified against astm iso en can cgsb can ulc 1 hour fire resistive rated wall assemblies click the link above each design number below represents a james hardie 1 hour fire resistive wall assembly jh fcs 60 01.

This assembly is fire rated for 1 hour from the interior side only except when brick and stucco is the exterior facing. This assembly is fire rated for 1 hour from both sides. That means homeowners have up to an hour before the material will give into the heat of a fire and begin spreading flames into the interior walls. What constitutes a 1 hour fire rated assembly.

According to the book commercial drafting and detailing a typical one hour fire rated wall consists of 2x4 studs spaced 16 inches from the center of one stud to the center of the next covered by 5 8 inch type x gypsum board. The period of time a fire resistant building element like jameshardie siding along with other components of the assembly maintains the ability to confine a fire continues to perform a given structural function or both as determined by astm e 119 tests. 2009 irc requires walls built within 5 of a property line or within 5 of another building on the same property to have a 1 hour fire resistance rating with fire exposure from the exterior of the building note. Type x gypsum board is wallboard to which non combustible fibers have been added.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Fire 1 hour rated exterior wall and interior partition panels are factory assembled from a unique combination of tried and true cladding components resulting in a building composite that delivers superior performance in all categories compared with mineral wool core sandwich panels. The thickness and number of the layers of type x gypsum wallboard are specified for each rating. 1 hour rated exterior fire wall zero lot line applications description.

The mbma fire tests of exterior walls in 1997 resulted in a new uldesign no. When properly installed against fire resistant materials plaster siding also known as stucco regularly achieves a one hour fire rating. Are james hardie products a masonry product. This ul listed assembly is commonly used in type v multifamily construction in load bearing exterior walls.

For exterior walls that are more than 5 feet from a.