Fiber cement boards are dimensionally stable materials designed to withstand weather, temperature changes, and mechanical stress. However, they are not entirely immune to moisture absorption or thermal expansion. When installed without
Applying the right primer is essential when finishing fiber cement boards. Without proper priming, paint can fail prematurely due to poor adhesion, moisture absorption, or uneven surface porosity. Choosing the best primer for fiber cement board helps achieve stronger adhesion, longer coating life, and better protection against weathering and UV exposure.