Caulk Underneath the Caps

What happens here

Load a caulk gun with a high-quality, marine-grade or pool-specific sealant that is resistant to water, UV radiation, and pool chemicals. Cut the nozzle of the sealant tube at a 45-degree angle, creating an opening appropriate for the size of the gaps being filled. Position yourself (often by lying on the pool deck, as demonstrated in the video by 'Pete') to gain good, stable access to the underside of the coping. Apply a steady, continuous, and even bead of sealant along the entire length of the gap, ensuring the sealant deeply penetrates the joint and makes good contact with both surfaces. The goal is to completely fill the void and create a watertight barrier that prevents water intrusion. The narrator emphasizes the physically demanding nature of this task, often requiring an 'upside down' posture for extended periods.

Goal: Fill all identified gaps with sealant to create a watertight and seamless seal.