The process of installing replacement windows in a camper or RV involves removing the existing window, preparing the frame or opening, fitting the replacement window, and mounting and securing the new window. Installation steps may differ depending on a number of factors, including the type and model of vehicle, window size, wall thickness and any interior obstructions that may interfere with the installation. Most replacement windows come with trim rings, fasteners and other hardware needed during installation.
Begin the installation by removing the screws around the perimeter of the frame and removing the existing window. Approximately 12 to 20 screws typically secure windows depending on their size. Always use a helper to help steady and secure larger windows. Use a putty knife to break the seal on windows that remain in place after removing all screws and mounting hardware, and always remove any sealant or tape still attached to the frame before replacing the window.
Test the new window by positioning it within the frame to ensure a proper fit. Lay the window on a flat surface, and apply seal tape along the edge. Have a helper position the new window, then install screws through the trim ring. Once installed, cap or caulk windows from the exterior to ensure a proper seal.