Our "7" year old windows are looking like the sills are starting to rot. The windows that are under the porch are not deteriorating. We can see the problem; the water/snow stays on the outside and gets into the window sill area. Also it leaks onto the exterior window triming and it's deteriorating also.
Since our windows are still under warranty, do you replace the entire window?
Other than the probable rotting sills, we enjoy the windows. We also have 10 casement windows and 2 sets of patio doors. Of the 14 dbl hung windows, only 6 of them have been spared, because they're under a porch.