Where the damage in the photo above is large it fortunately has not extended to either side of the vertical trim board.
Repair rotted window sill youtube.
Wooden sills have a tough time standing up to the elements year in and year out.
Repair rotted window sill.
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A simple epoxy repair will do the trick if the rot is confined to a small area but if more than 10 percent of the sill is rotten the old sill should be cut off and replaced.
While most wood rot starts at the window sill the length of time the damage is ignored will affect the amount of damage that needs to be repaired.
Rot moving up vertical trim boards.
This old house general contractor tom silva shares some tricks of the trade for installing a new long lasting windowsill.
See below for tools and a shoppin.
How to fix a partially r.
If your sill is rotting or falling apart replace it with these simple steps.