When installing vinyl siding, which component is typically installed last?

In the process of installing vinyl siding, the siding panels are typically the final component installed. This order is crucial for achieving a proper weather-tight seal and ensuring that the siding performs effectively.

Installing the siding panels last allows for a clean, finished appearance because the panels can overlap the trim pieces and the edges of the window casings, which are generally put in place prior to the siding. This overlapping method helps prevent water infiltration, directing any moisture away from the wall structure. Additionally, by installing the siding last, any necessary adjustments or cuts can be made to ensure a precise fit around openings such as windows and doors.

The role of the underlayment is primarily to serve as an additional waterproof barrier and insulation, and it is installed before the siding panels. Trim pieces are also installed before the panels to frame the windows and doors and provide a visually appealing transition. Ultimately, the installation sequence is designed to maximize protection against elements and enhance the overall integrity of the siding system.