A durock panel with a thickness of 1 2 or 5 8 inch can provide two hours of fire protection when installed correctly and in conjunction with all fireproofing.
Cement board siding fire rating.
Are your products 1 hour fire rated.
The exact fire rating of durock is dependent on the other materials used during construction but a panel 1 4 or 1 2 inch thick typically provides an additional hour of fire protection.
Yes hardiebacker 1 4 cement board is deemed noncombustible when tested to astm e 136 and can be used in conjunction with other noncombustible materials around a fireplace.
It offers the look of authentic wood shiplap siding even with lookalike textured wood grain.
Many fiber cement products carry a class a fire rating meaning that they can withstand several hours of heat before melting down.
Fiber cement siding stormed onto the scene a few decades ago and revolutionized the house siding industry because it possesses the best of many worlds.
This means that coupled with other fire resistant building materials including insulation and framing fiber cement siding will withstand fire and in some cases even increase the assembly s overall fire resistance.
James hardie uses what it calls the hardiezone system.
Hardietrim boards hardiesoffit pre cut panels artisan by james hardie hardiewrap weather barrier hardiebacker cement board.
Fiber cement siding maintenance.
This does not mean that clearances to combustible building materials can.
Nichiha s robust architectural wall panel rainscreen system and thick sierra lap board are ibc code compliant for use as exterior cladding in fire resistance rated wall assemblies.
On 2 x 8 common plate 3 1 2 thermafiber safb both cavities joints taped.
However using fiber cement board like hardieboard is acceptable in locations including the mantel and fireplace surround.
Here are the main installation considerations with respect to the choice of materials.
Fire ratings the hardiebacker board is made with a quarter inch thickness so that it can serve as fireplace facing.
Fiber cement siding maintenance.
It can be used as part of a hour long fire wall which is a wall that can resist a fire for up to an hour.
Hz5 climate zones 1 5.
An alternative to vinyl siding fiber cement a mixture of cement sand and wood fibers manages to achieve very high fire resistance without sacrificing convenience and durability.
Unlike wood it is fire resistant.