Window Sill Rot Repair

Repair rotted window sill.

Window sill rot repair.

Step 3 cutting the new window sill. If your sill is rotting or falling apart replace it with these simple steps. Rot moving up vertical trim boards. But if you ve waited too long and have found rotten wood it s time to repair or replace your window sill.

Where the damage in the photo above is large it fortunately has not extended to either side of the vertical trim board. If you can keep your old window sill intact you can simply trace the design on your new piece of wood. Yes you can use epoxy to repair a rotted sill of an old window and that can actually be better than replacing the window the great thing about using epoxy on a window is that you end up with something stronger than wood. This old house general contractor tom silva shares some tricks of the trade for installing a new long lasting windowsill.

Wooden sills have a tough time standing up to the elements year in and year out. We re here to show you how. 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 not try to reconstruct it as closely as possible by taking measurements.

Your window sill is the bottom portion of your window running horizontally within the jamb resting against the outside of the window sash. 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. There are many sizes and styles of windows of course and you want to match what was there as closely as possible. It s easy to figure out what you need to fix a rotted windowsill once the bad parts are out.

Many window sills including ours are 1 1 2 thick. Dig out the rotted wood and refill the cavity using products made specifically for this type of job. When you ve done this mark them on the new window sill. 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.

This makes replacement simple as the new sill can be cut from a standard 2 4. See below for tools and a shoppin. Repairing window sills isn t a hard diy and i try to share simple ways to make diy improvements to your home. 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.

How to replace exterior rotted wood window sill.