At Venus Enterprises, we’re proud of providing high quality Shera Boards, non-asbestos fiber-cement building boards which combine the durability and strength of plaster with the flexibility of wood. Components of Shera Board The shera board is composed of Portland cement, cellulose fiber and refined sand. The shera board gains strength and durability through autoclaving, along with easy workability and dimensional stability, making it a reliable and versatile building material. Shera board endures a specific treatment method called autoclaving. During autoclaving, the boards are exposed to high pressure and steam, resulting in several important benefits.