Fire Rated Cement Board Siding

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 many fiber cement products carry a class a fire rating meaning that they can withstand several hours of heat before melting down.

Fire rated cement board siding.

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. Icc es ner 405 fire resistance rated wall assemblies ner report ner 405 click the link above and go to section 3 5 of ner 405. Note that most fiber cement sidings require a gypsum board underlayment to reach their maximum efficacy. It offers the look of authentic wood shiplap siding even with lookalike textured wood grain.

The period of time a fire resistant building element like jameshardie siding along with other components of the assembly maintains the ability to confine a fire continues to perform a given structural function or both as determined by astm e 119 tests. On 2 x 8 common plate 3 1 2 thermafiber safb both cavities joints taped. Fiber cement siding panels can improve the overall fire resistance hardening rating of your home which is helpful for insurance purposes in western locations like california. 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.

Fiber cement siding maintenance. Are james hardie products a masonry product. Unlike wood it is fire resistant. Cement board with edgeguard model 172954 view the tile backerboard collection 10 97.

Fiber cement shingles and clapboards made from a mix of portland cement sand and wood usually carry a class a fire rating which means they can withstand 2 to 4 hours of high heat before your home s structure starts to fail. Hardietrim boards hardiesoffit pre cut panels artisan by james hardie hardiewrap weather barrier hardiebacker cement board. Usg durock brand 1 2 in. Options like cement board siding come in a variety of modern textures profiles sheens and shapes providing an abundance of design flexibility while still being 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. What constitutes a 1 hour fire rated assembly. Concrete block plywood siding fire resistant building materials metal roofing building materials abc siding all electrical supplies.