One Hour Fire Rated Wood 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.

One hour fire rated wood siding.

Descriptions of successfully tested lumber wall assemblies are provided in. Lp flameblock sheathing can be used in a few different 1 hour fire rated wall assemblies including. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 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.

This assembly allows for 2x4 wall construction and is fire rated for 1 hour from both sides. This assembly is commonly used in 1 hour exterior walls along the property line including single family construction. When properly installed against fire resistant materials plaster siding also known as stucco regularly achieves a one hour fire rating. Lumber shall be identified by the grade mark of a lumber grading or inspection agency that has.

Lp smartside lap and panel siding 2. Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test. According to the engineered wood association a one hour rating indicates that a wall constructed in a manner similar to the one tested will contain flames and high temperatures and support its full load for at least one hour after the fire begins. 1 2 cedar or redwood.

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 jh fcs 60 02 jh fcs 60 03 jh fcs 60 04. Objectives framing on the legacy village at castle pines began in march 2017 and the project is scheduled for completion in january 2018. 90 of the planks are made of materials that won t burn giving fiber cement siding a class 1 a fire flame spread rating the highest classification available. In high risk fire zones in california exterior walls that are not otherwise required to be 1 hour rated must meet requirements for fire resistance lp flameblock sheathing has been evaluated to be used with the following architectural claddings.

Whereas fire resistance information can be used to judge the ability to resist flame penetration into the building it does not necessarily provide information regarding flame spread. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies. A nominal one hour wall has been used as one way for a wall having combustible siding to be used in wildfire prone area.

Have tested a number of wood frame fire rated assem blies. Unlike wood siding fiber cement siding doesn t burn even under extreme heat.