Any assistance you may provide with how to information with regard to the use of PVC window sill products would be appreciated. The project I am working on involves replacement (full or partial), depending on the condition of the existing wood sill, of wood window sills using PVC products. The repair / replacement work of existing sills is to be completed prior to the installation of replacement windows. In addition to information on full sill replacement identifying a repair process that calls for cutting / preparing the existing wood sill to receive a PVC sill nosing (partial sill replacement) is very important to the success of the project. Thank you for any assistance you may provide.