What backer board I use and why
For normal shower installs, I prefer the HardieBoard hands down. The primary reason has to do with the ease of cutting and lack of the “crumbly” aggregate. HardieBoard’s “grain” is very fine and does not release the fine gravel like particles the other aggregate type products do. You can score this for cuts, but I use a thin diamond dry cutting blade in my grinder. It makes more dust this way, but it is fast and leaves a very clean edge. (Breathing this dust is bad, so cut outdoors and use a dust mask.) The lack of aggregate in the “Hardie” types reduces the chance of gouging a new acrylic or shinny new enameled tub.
I have used all of these products over the years, and I chose WonderBoard for my cabins floor primarily for its highest mass…in that project I was looking for thermal mass in a passive solar design. The WonderBoard there, in my 200 sq foot cabin, gave me about half of my estimated 1200 to 1400 pound thermal mass floor.
Kevin Stevens writes for Networx.com.View original post.