A home inspector shall visually inspect the accessible structural system, including the structural components. A home inspector shall describe the visible types and materials of the structural system, including the: Foundation including a reference to the location of access and methods used to inspect the under-floor crawl spaces and basements; Floor structure; Wall structure; Ceiling structure; Roof structure, including a reference to the location of access and methods used to inspect the attic; and Conditions that adversely impact the structure. Probing. A home inspector shall probe a representative number of structural components where deterioration is suspected or where clear indications of possible deterioration exist. Probing is not required: If it will damage any finished surface; or Where no deterioration is visible. A home inspector is not required to: Provide any engineering service; or Offer an opinion as to the adequacy of any structural system or component.