Final answer:
ArmourStick HD is a type of roofing membrane where the cap sheet does not need to be staggered from the base sheet, simplifying installation and ensuring a uniform application as per the manufacturer's instructions.
Step-by-step explanation:
When installing roofing materials such as ArmourStick HD, it is important to know if the cap sheet needs to be staggered from the base sheet. Staggering refers to offsetting the seams of the cap sheet in relation to the seams of the base sheet, which can be crucial in some roofing applications to ensure a watertight seal and prevent leaks. However, in the case of ArmourStick HD, it is designed to be a self-adhering modified bitumen roofing membrane whose application does not require staggering. This simplification in the installation process can be advantageous, as it typically makes for a quicker and potentially more uniform application. It is always best to follow the manufacturer's installation instructions specifically for the roofing product in use.