Think of jh products as a pan used for cooking.
Is james hardie siding fire rated.
A homeowner cannot get any better fire safety quality than that.
The astm rating for james hardie siding classifies it as non combustible.
Read more about fire resistant cladding here.
A fiber cement product simply does not burn.
Ul 263 fire tests of building construction and materials.
All james hardie siding and trim materials from hardieplank lap siding to hardiepanel vertical siding to straight and staggered edge hardieshingle siding are rated as non combustible based on astm fire resistance tests.
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.
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.
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.
While jameshardie products will not ignite when exposed to direct flame or contribute fuel to a fire heat will transfer through them.
That said while james hardieplank siding won t allow fire to penetrate your home s interior it does allow heat to transfer.
This means that it is a non combustible cladding and will not ignite when exposed to direct flame or extreme heat nor will it contribute fuel to a fire.
While vinyl siding is technically non flammable it does warp and melt when close to flames.
For homes that have a fireplace or live in areas vulnerable to wildfires an investment of james hardie siding could literally save lives.
Unless otherwise noted fire ratings apply to tests conducted on both sides.
Nfpa 251 fire tests of building construction and materials.
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.
James hardie fiber cement siding is fire resistant which is a huge advantage compared to wood or vinyl siding.
Because of this the product itself is not 1 hour fire rated.
Ubc 7 1 94 uniform building code standard.
Designs listed are minimum construction requirements to achieve fire rating.
