An old house in Oakland had a rotten window sill that needed some love. The previous “fix” involved a fiberglass cap to hide the old rot. After that failed the old rot got even worse.
We took out the fiberglass capping and cut out the rot from the sill. We cut a custom piece of redwood and cut it to match the pitch of the old sill. Some caulking and patching made the fix seamless. After primer and paint it looked as good as new.