One Hour Fire Rated Wood Siding

A nominal one hour wall has been used as one way for a wall having combustible siding to be used in wildfire prone area.

One hour fire rated wood siding.

Descriptions of successfully tested lumber wall assemblies are provided in. 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. Lp flameblock sheathing can be used in a few different 1 hour fire rated wall assemblies including. 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 is commonly used in 1 hour exterior walls along the property line including single family construction. This assembly allows for 2x4 wall construction and is fire rated for 1 hour from both sides. Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test. Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 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. Lumber shall be identified by the grade mark of a lumber grading or inspection agency that has. 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.

Have tested a number of wood frame fire rated assem blies. Lp smartside lap and panel siding 2. The secret to fiber cement s durability is also what makes it fire resistant. 1 2 cedar or redwood.

When properly installed against fire resistant materials plaster siding also known as stucco regularly achieves a one hour fire rating. Explore house siding colors. House siding ideas gallery. 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.

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. Unlike wood siding fiber cement siding doesn t burn even under extreme heat.