Is James Hardie Siding Fire Rated

Nfpa 251 fire tests of building construction and materials.

Is james hardie siding fire rated.

For homes that have a fireplace or live in areas vulnerable to wildfires an investment of james hardie siding could literally save lives. A homeowner cannot get any better fire safety quality than that. 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. It does not provide a good barrier for flames.

While jameshardie products will not ignite when exposed to direct flame or contribute fuel to a fire heat will transfer through them. Designs listed are minimum construction requirements to achieve fire rating. James hardie siding products will not combust or spread flame and can be installed as part of a 1 hour fire resistance rated wall assembly which can help buy critical time for the homeowners to evacuate and fire professionals to extinguish flames a main reason it. James hardie fiber cement siding is fire resistant which is a huge advantage compared to wood or vinyl siding.

Of course wood siding is rather vulnerable to fire due to its nature and building material. However they do qualify for use in certain 1 hour fire rated warnock hersey and ul assemblies. Because of this the product itself is not 1 hour fire rated. Ul 263 fire tests of building construction and materials.

It is not 1 hour fire rated but it is still classified for use in certain 1 hour fire rated warnock hersey and ul assemblies. Read more about fire resistant cladding here. Ubc 7 1 94 uniform building code standard. The astm rating for james hardie siding classifies it as non combustible.

That said while james hardieplank siding won t allow fire to penetrate your home s interior it does allow heat to transfer. Fibre cement cladding from james hardie has a fire rating of a2 s1 d0 which is the highest possible fire rating for a coloured cladding board. While vinyl siding is technically non flammable it does warp and melt when close to flames. A fiber cement product simply does not burn.

Think of jh products as a pan used for cooking.