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 construction materials.Click to see full answer. Simply so, is cement board fire resistant?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″.Also, can cement board be used around a fireplace? You can use Hardiebacker board around your fireplace. However, using fiber cement board like Hardieboard is acceptable in locations including the mantel and fireplace surround. In this way, can cement board be used as a heat shield? Safe wood stove installations require a heat shield that will prevent heat from the wood stove from creating a fire hazard in the building materials that form the exterior wall. Hardi cement board is an inexpensive solution that will form the foundation of an effective heat shield for any application.Is cement board a1 fire rated? A1 non-combustible, cellulose fibre cement board With an A1 non-combustible classification Multipurpose offers the highest level of fire rated performance making it an excellent option for buildings over 18m.
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