To install replacement basement windows, remove the old window and measure the opening to ensure a proper fit. Place the new window into the opening, apply caulk around the edges to seal, and secure the window with screws. For added moisture protection, use flashing tape around the window frame, and finish by sealing any gaps with caulk or foam insulation.

Replacing basement windows involves removing the old window, securing the new one with screws, and sealing with caulk. Proper insulation and moisture protection with flashing tape are crucial to preventing water damage and improving energy efficiency.