Is Backerboard fireproof?
Category:
home and garden
indoor environmental quality
Most brands of concrete backer-board consist of a fibrous reinforcement cement composition molded into sheets. It is extremely hard and waterproof, meaning it will not deteriorate over time when exposed to water, making it ideal for use in high-traffic areas that are susceptible to the adverse effects of moisture.
Consequently, is Hardibacker fireproof?
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. This does not mean that clearances to combustible building materials can be reduced by using HardieBacker 1/4".
Regarding this, is Permabase fireproof?
section01350/. UL approved for heat shield/wall protector per ANSI/UL 1618 and ULC 632. Protects combustible walls. Reduces required clearance from wall by 40 percent.
Fire safety Wonderboard. Contrary to popular belief, the Wonderboard products are fireproof and they have a fire class C s3 d0 and B s2 d0 and the standard in accordance with EN 13501-1.