Q: What is fiber-cement siding?
A: Fiber-cement siding is one of an increasing variety of exterior siding products. It is made of a fiber-reinforced lightweight concrete that is most often manufactured to look like clapboard (or lap) siding. Smooth or textured, and occasionally containing recycled content, it is more durable than wood, vinyl, or aluminum siding products and therefore costs less to maintain. Fiber-cement siding also serves as an effective thermal mass to minimize heat loss or gain through the structure, thus reducing energy use and costs.