Window Sill Rot Repair

See below for tools and a shoppin.

Window sill rot repair.

Repair rotted window sill. How to replace exterior rotted wood window sill. Step 1 getting started. Repairing window sills isn t a hard diy and i try to share simple ways to make diy improvements to your home.

Now cut out the shape of the window sill with a saber saw making. It s easy to figure out what you need to fix a rotted windowsill once the bad parts are out. If not try to reconstruct it as closely as possible by taking measurements. There are many sizes and styles of windows of course and you want to match what was there as closely as possible.

We re here to show you how. This old house general contractor tom silva shares some tricks of the trade for installing a new long lasting windowsill. 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. Wooden sills have a tough time standing up to the elements year in and year out.

Your window sill is the bottom portion of your window running horizontally within the jamb resting against the outside of the window sash. Where the damage in the photo above is large it fortunately has not extended to either side of the vertical trim board. A window sill is the bottom portion of the window and usually but not always has a lip that overhangs the trim molding and over time these can get damaged or even rot. Dig out the rotted wood and refill the cavity using products made specifically for this type of job.

If your sill is rotting or falling apart replace it with these simple steps. When you ve done this mark them on the new window sill. Many window sills including ours are 1 1 2 thick. If you find your window sill is starting to crack or chip fill them in and repair them before the wood begins to rot.

If you can keep your old window sill intact you can simply trace the design on your new piece of wood. Step 3 cutting the new window sill. For this project i used a solid piece of kleer cellular pvc sill that matches the profile and thickness of the other sills on the house. But if you ve waited too long and have found rotten wood it s time to repair or replace your window sill.

Rot moving up vertical trim boards.