Final answer:
This question refers to installation guidelines for ArmourStick HD cap flashings within the field of construction engineering. Cap flashings must extend properly onto the field of the roof to prevent water penetration and to provide effective waterproofing.
Step-by-step explanation:
The question pertains to the installation specifications for ArmourStick HD cap flashings, which is related to the engineering field, particularly the branch dealing with construction or architecture. Cap flashings are materials used in roofing to provide waterproofing, where these specifically should extend onto the field or the main surface of the roof to ensure proper coverage and protection against water penetration. It is crucial for the flashing to extend far enough to adequately shield the seam or edge where the roof covering meets with other structures or roof projections.