Which of the following represents a method for weather-tight panel joints?

• A. Bonding with resin
• B. Sealant tape
• C. Gaskets
• D. Caulking

Answer: (D)

Weather-tight panel joints rely on a sealant that stays flexible and durable enough to accommodate movement and exposure to the elements. Caulking fills the gap between tilt‑up panels with a elastic sealant, providing a watertight and airtight barrier as the building settles and experiences temperature changes. It’s installed after erection and often uses a backer rod to control depth and improve adhesion, which helps the seal perform long-term on concrete and masonry surfaces typical of tilt‑up walls. This combination makes caulking the best choice for achieving a weather-tight joint. Bonding with resin would create a rigid connection and can trap moisture; sealant tape may offer a temporary or secondary barrier but isn’t as durable for large, irregular panel gaps; gaskets require precise joints and hardware and are less adaptable to field-installed tilt‑up conditions. Caulking provides the right balance of seal, flexibility, and practicality for these joints.