Kentucky Home Exteriors

How To Properly Maintain Your James Hardie Siding

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Learning how to maintain your James Hardie siding will help you make the most of your investment. With its exceptional craftsmanship, innovative technology, and versatile design options, James Hardie siding increases curb appeal and protects against the elements. But a bit of love and care goes a long way in helping an already stellar product go that extra mile and last longer.

Tips To Help You Maintain Your James Hardie Siding

James Hardie is popular in Kentucky because it is low-maintenance and offers a high ROI. However, regular maintenance can make a big difference in the longevity and performance of your siding.

Regular Cleaning

You should clean your Hardie siding at least once a year. Don’t use a high-pressure washer, as it can damage your siding. Instead, opt for a low-pressure garden hose and a cloth or soft, non-metal, medium bristle brush.

Removing Dirt: Water is perfect for cleaning dirt off your James Hardie siding. Work from the top, doing one small section at a time.

Removing Grease and Oil: Mild liquid dishwashing soap and water will do the trick with grease and oil marks. Rinse the solution with a hose; don’t let it dry on the siding.

Removing Mold and Mildew: The best way to get mold and mildew off your Hardie board is to use a mildew-specific cleaner and water. Lightly scrub the area with a cloth or sponge.

Inspect for Issues

Regularly inspecting your siding for problems is one of the easiest ways to keep up with potential issues. Look for cracks, chips, or loose panels and fix them as soon as possible. Any breach in your siding is an opportunity for moisture infiltration. You can also look for gaps around doors, windows, and corners, indicating deteriorating caulking.

General Maintenance

Sometimes, you must perform general maintenance to maintain your James Hardie siding. For example, shrubs up against the side of the house can retain moisture and damage the siding. `Overhanging tree branches can scratch siding and block gutters and downspouts with debris. Keeping your water management system clear is also important because clogged gutters and damaged flashing can mean excess water on your siding.


James Hardie siding is prefinished in the factory with a baked-on color. However, it does need to be repainted after 15-20 years to help it perform optimally. Although it might seem inconvenient to have to repaint your siding, it also offers you the chance to update your home’s color and overall look.

It Doesn’t Take Much To Maintain Your James Hardie Siding

James Hardie products are prefinished in the factory under perfect conditions, so once your siding is installed, there is very little that you need to do. Hardie also offers a 30-year non-prorated warranty, but there’s nothing to say your siding won’t last longer than that with the proper care.

Hardie siding is:

Why is Maintenance Important?

Maintenance on your siding helps you make the most of your investment and not void your warranty. Although Hardie siding can withstand harsh weather, no siding is completely impervious to large hail or flying debris. By maintaining your siding, you can repair minor damage before it becomes serious. Remember, your siding is part of a system that protects your home. When there is a breach in that system, other areas are affected.

Kentucky Home Exteriors: Your Local James Hardie Experts

We love James Hardie siding because it’s low maintenance, beautiful, and well-suited to the Kentucky climate. Our installers have years of industry experience and the knowledge and skills to complete a high-quality installation following manufacturer best practices. If you want more tips on how to maintain your James Hardie siding or need a siding replacement, contact us for a free in-person consultation.

Chris Demuth

Chris DeMuth

Founder & CEO

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Owner & CEO

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