Fix Your Foundation Before It’s Too Late

How To Clean Vinyl Window Siding

by Howard Barnett

To keep the siding looking its best, it's important to clean and maintain it on a regular basis. The climate in which you live will determine how often you'll need to wash the window siding, as natural elements such as rain, dust storms, and humidity can degrade the look of the vinyl over time. You can talk with your siding manufacturer or another professional, like Beissel Window & Siding, to see how often you need to clean your vinyl siding.

Here are some ways to keep the window siding in good condition:

1. Clean the siding regularly with a vinegar solution.

Vinegar is an all-purpose cleaner that is strong enough to remove even stubborn dirt and other debris. It's also eco-friendly and safe to use outside. To make the solution, combine 75% water with 25% distilled, white vinegar in a large bucket. 

Dip a long-handled sponge brush into the solution and begin rubbing it over the window siding, working in long, top-to-bottom strokes to avoid streaking. If you need to work on a small, particular area, use a soft-bristled brush to work the solution into the stain.

If vinegar alone doesn't do the trick, add a few drops of a gentle dish washing soap into the mixture and sponge it over the siding. You can also add a small amount of bleach if you need to remove stubborn mold or mildew stains.

2. Use a pressure washer to give the vinyl siding a deep cleaning.

Once or twice a year, freshen up your window siding using a heavy-duty pressure washer, which will break up and remove stuck-on debris such as mud and old, dry bird droppings. If you don't own a pressure washer, you can rent one from a DIY retailer.

You may have to climb a ladder when using the pressure washer to reach the entire window siding surfaces. If so, have someone stand at the bottom of the ladder to steady it for safety purposes. Also, make sure that all windows are closed tightly before starting the cleaning process.

Aim the pressure washer directly at the siding, rather than at an angle, to avoid getting water behind and under the material. For extra cleaning action, add soap especially designed for use with pressure washers into the reservoir to create a soapy spray. Thoroughly rinse all of the soap off of the structure with plain water before it dries. Make sure you do this on a warm day so that the siding can adequately dry.