Learn how I repair wood window sills with vinyl replacement pieces. This video is showing repair of a dormer window, but steps are very similar for most wood windows. Materials used in the video below.

window sill nose: https://www.homedepot.com/p/1-3-8-in-...

window sill:
https://www.homedepot.com/p/Veranda-1...

window trim moulding:
https://www.homedepot.com/p/Royal-Bui...

hybrid caulking:
https://www.homedepot.com/p/OSI-QUAD-...