The most important advantage is in the quality and consistency of the finish. The factory has an edge over those applying finishes in the field because the wood can be painted, stained, or sealed, before the window is even assembled. All of the parts get protected, even in places that become less accessible after the window is built. The finish is even and consistent in color and thickness in a way that’s difficult to match under any changing conditions on site. None of the liquid finishing material ever comes near the glass, so no paint or sealant needs to be removed and the glass is pristine and framed with a clean, precise edge.
Moreover, the homeowner can see and approve the color and finish before the windows are installed. And because the materials used have a track record of performing well in window applications, both contractors and their customers can have peace of mind that the windows will last long and deliver the highest quality performance and appearance. Factory-finished windows are already protected against the weather from the moment they arrive on the jobsite. In the unlikely event there is a problem with the finish, it can be identified before the window is installed, and brought to the attention of the manufacturer, thereby eliminating an expensive callback. .
Pre-finished windows can help with construction schedules as well. The application of several coats of stain and sealant can stretch out for days, or even weeks, if inclement weather arises. Using a pre-finished window system can help contractors meet deadlines and avoid penalties for delays in completion.
Quality, speed, and peace of mind are valuable properties in any construction product, and worth the consideration of any smart contractor.