Part 1 of 2 Part Series: Which Substrate is Best - HardieBacker vs. Durock

Cementboard- Hardiebacker vs. Durock

Chances are if you install tile, you’re going to have an opinion on what backerboard is the best to work with.  If you’re a DIYer and you’ve got an upcoming tiling project, you’re going to want to do your homework to figure out the proper substrate for your floors or walls.  Cement backerboards are among the most commonly used, as they resist mold growth and warping when subjected to water. 

“Hardie” supporters will claim that the Hardiebacker is stiffer and easier to carry, as it is less floppy.  Durock fans will say that it is lighter in weight, as well as easier to score and snap with a utility knife much like drywall.  But talk to someone who prefers working with Hardieboard and you will be told that the Durock product is “crumbly” and less cleaner of a cut.  HardieBacker is said to be dusty and less tolerant to screws with some who have worked with it and some claim it also tends to absorb more water causing you to use more thinset.  

All in all both products are very comparable in that they are installed roughly the same way and have a similar result……making this a difference of personal preference. There are some clear differences which the outline below shows some of their discrepancies in strength and composite.