HardieBacker ® Cement Board with HydroDefense™ Technology provides the unmatched strength, ease of use and excellent tile adhesion you've come to expect from the most preferred brand of backer ...

HardieBacker – My favorite backer board The other main type is what I call the "Hardie" type. As you may have guessed, HardieBacker is a non-aggregate based product from James Hardie.