Seal Tech is preventative maintenance that should be done annually on your RV. Seal Tech detects leaks far better than a visual inspection. During the process we force in air to pressurize your RV then lightly spray a water-based solution around sealed areas (such as the roof) to detect leaks. If there is a spot where water can come in, the solution, combined with the pressurized air will create a bubble. It’s an efficient way to detect and fix leaky spots before more extensive water damage occurs.