Sealants can be used to make expansion joints watertight in installations such as coping, gravel stops, and fascia.

• A. Sealants cannot be used for expansion joints.
• B. Sealants are only used for sealing metal joints.
• C. Sealants are not compatible with coping or fascia.
• D. Sealants can be used to make expansion joints watertight when installing products, such as coping, gravel stops, and fascia.

Answer: (D)

Sealants provide a flexible, watertight seal for expansion joints in exterior metal assemblies. When coping, gravel stops, and fascia are installed, joints can move with temperature changes and settling. A suitable sealant—designed to adhere to metal and surrounding materials and to remain elastic—fills the joint and accommodates movement while keeping moisture out. This is exactly why sealants are used to make expansion joints watertight in these installations. The other statements misrepresent sealants’ use, as they are not limited to metal joints, are not universally incompatible with coping or fascia, and can indeed be used to seal expansion joints.