Secondly, consider a Digtra or equivalent underlayment mat to compensate for the potential subfloor movement and additional protection against moisture and dampness. For example, when joists are more than 16-inches apart, first reinforce the subfloor before considering the Hardibacker board as an underlayment.įirstly, I recommend the quarter-inch Hardibacker boards when planning to lay tiles on any wooden subfloors. Ensure that your subfloor adheres to the local approved building code standard for tiling. Remember, cement boards, are not a replacement for substandard subfloors. Related Reading: How to Tile Over Uneven Drywall How To Install Hardibacker Boards On Subfloors In addition, components such as fiber are added to backer boards to increase their strength and sturdiness. First, plastering drywalls with mortar creates the cement wall finishes and structure. When comparing backer boards to drywalls, the actual value of the backer board’s tile compatibility is better understood. Why Hardibacker Board Is An Ideal Base for Tiling When attached directly to subfloor joists or planning to lay tiles, opt for thicker 1/2-inch boards. The quarter-inch backer boards are perfectly sufficient when used over an existing subfloor.
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