Is backer board the same as cement board?
Also, is Hardie board the same as cement board?
One particular contractor in Colorado Springs relishes the opportunity to expound upon the finer points of Hardie Board, but according to most contractors they are relatively the same thing. Hardie Board is the best known brand of cement board siding, which is often called fiber cement.
Furthermore, do you need to mortar backer board? You cannot put a cement backer board over that. You need to put a layer or plywood, minimum 5/8 IIRC, over those boards, then mortar the backer to the plywood. Those 1x8 boards won't give a solid foundation and will flex. Over time, that will cause tile to pop loose or crack.
Keeping this in consideration, what is a backer board?
Backerboard is a thin layer of concrete with fiberglass mesh on both sides. It is available in a range of sizes, but 3 x 5-foot sheets are most common. This project guide shows how to properly lay out your backerboard with a chalk line and using mortar to secure and level your floor before installing tile.
Can you paint cement backer board?
If painting, apply a drywall primer suitable for high-moisture areas, as recommended by the paint manufacturer and paint HardieBacker board as you would drywall. If wallpapering, prime surface of HardieBacker board with a primer suitable for high-moisture areas as recommended by the wallpaper manufacturer.