How to Clean a Window Well

If your window wells have covers, start by removing them following the manufacturer’s instructions. Most covers are secured down to the barrier using screws and can be removed easily using a power tool.

Remove leaves, broken branches, and large debris first. Use a leaf rake to get rid of branches and leaves. Then, use a small shovel to remove any existing gravel and large rocks. Finally, use an outdoor broom to do a final sweep. Put everything into a large trash bag for removal. Consider having a helper so they can lift the trash out of the well so you don’t have to climb up and down repeatedly.

Now that your window well is emptied, it’s time to clean stains off the window and the barrier. Mix one part of dish detergent with one part of warm water. Fill a spray bottle with the mixture and spray an ample amount onto the barrier and the window. Scrub any stains with a hard-bristle brush. Use a rag to wipe any stains and grease away. Then, use a dry rug to soak up any excessive moisture. For more stubborn stains, try an industrial degreaser. You can find those at your local hardware stores. While you are cleaning the well, also consider cleaning the exterior of your windows and applying new caulking for weatherproofing.

If you have a metal window well, rust could build up on the surface. You might spray a little white vinegar on it to help remove any long-standing buildup. Once done, cover the area with galvanized metal etching primer, which promotes adhesion and prevents leaks in the future. Let it dry, then apply a layer of acrylic latex paint. This helps provide additional protection and gives everything a uniform color.

Next, attach a short high-pressure nozzle to your garden hose and give the well drain a good rinse. If you don’t have a nozzle, a handheld vacuum and a stick might also do the job. Break up any larger clumps you feel with the stick through the drain and vacuum debris out. If that doesn’t do the job, you might need to hire a plumber or drain expert.

Fresh, new gravel will provide additional drainage ability for your window well, thus also extending your well drain’s lifespan. Make sure the gravel is at least 6 to 12” deep before reaching the window for sufficient draining. If more dirt has filled the well, you might want to dig more out before laying the new gravel.

Finally, you can clean the cover you removed earlier using the same steps above. Look for stains and rust, and recoat with galvanized metal etching primer and acrylic latex paint for some additional protection. Be sure to clean the screw holes as well.