Cement fiberboard siding has not been around long enough to really find out whether it is or is not a really good product. I have only been using this product for less than 10 years. When I first started using the product, you needed to have a special saw blade and it seemed to be brittle and easy to break.
They seem to have improved the product a little bit, but that is just my opinion. Since then I have installed this product on quite a few homes and have not had any problems yet. My personal opinion about cement fiberboard siding, is that, I think it's a very good product and will continue recommending it to other homeowners, that I will be working for in the future.
I would like to share something else about this product. It looks like it would hold up well in almost every weather condition. Whether it's too cold or too hot, this product looks to weather the storm.
The only real problem I have with this product, is that it is just a little bit bigger than a quarter of an inch thick and if it is not stored properly, it can start to warp. With this in mind, you might not notice the wavy siding on small sections of your house.
However, walls that are longer than 16 feet may have noticeable warping. The warped siding can give the homeowner the illusion that the contractor has installed the product incorrectly or over an uneven surface.
It's not as noticeable, if you're standing away from the home at a distance, but if you're looking at the home closely, you will notice the wavy pattern from the cement fiberboard siding.
The product looks to have more advantages and disadvantages and as a contractor with over 30 years of building experience, I would recommend this product to anyone.
Make sure that you visit the James Hardy website, before purchasing this product. You should always read and understand the recommended manufacturers installation instructions, before installing any products on your home.