A while back, I noticed my Exterior Window Sill was starting to crack and rot, and I knew it was time to tackle the issue. I came across this guide:
https://windowtechcanada.ca/a-step-by-step-guide-to-exterior-window-sill-replacement/, which explains everything you need to know about replacing an Exterior Window Sill, step by step. It covers the tools, materials, and process in a way that made it easier for me to decide whether to do it myself or call in some help