Most likely you will have to.
Fix window sill rot.
If the casings are rotting as.
The casing comes off to clear the way for removing the old sill.
How to replace exterior rotted wood window sill step 1 getting started.
Set the depth of the router bit to create a stepped patch to fit into the window sill.
Start refitting the trim putting it back in the reverse order to which you removed it.
Before working on the sill seal off the house interior from dust.
Surround the damaged area with wood strips to serve as a router guide.
Most sills are designed with a few degrees of downward slope to help them shed water.
How to repair a rotted windowsill remove the side casings.
Fix a rotted windowsill and help prevent a relapse.
A circular saw with.
Saw off the old sill.
These are your first steps before you can remove the window sill.
First cut the angle on your sill.
Once you ve retrieved all your parts it s time to start putting everything back together.
Make a plumb cut flush with the sheathing along the length of the rotten sill.
Depending on how rotted your window sill is it may be an easy or more difficult job.
Rot that occurs deep inside of the sill is more difficult to repair.