Which term means to fill a joint with mastic or asphalt roofing cement, or the material used to fill the joint?

• A. Bundle
• B. Caulk
• C. Blisters
• D. Certificate of Compliance

Answer: (B)

Sealing a joint with mastic or asphalt roofing cement is all about creating a flexible, waterproof boundary that can accommodate movement in the roof. The term for this process and the material used is caulk. Caulk fills gaps and joints so water can’t seep in, while remaining flexible as the roof expands and contracts with temperature changes and movement.

Other options don’t fit this concept: a bundle is just a grouping of items, not a sealing material; blisters are defects that form on a roof; a certificate of compliance is a document, not a sealing substance or process.