Frequently Asked Questions – CertainTeed Fiber Cement ...
In addition, Siding with warping or bowing in excess of 1/2″, field and edge cracking through the board, or delamination is also Qualifying Damage. Siding means CertainTeed WeatherBoards™ Fiber Cement Siding, Lap Siding, Vertical Siding, Shapes, Soffit, Porch Ceiling, and 7/16” Trim installed on or before September 30, 2013.