Fiber cement siding is an amazing home addition, it is one of the most durable materials with low maintenance options for covering your home exterior. This extremely durable material is reinforced with concrete, glass, and sand with less maintenance and fewer replacements through its lifetime than other siding materials such as aluminum, wood, siding, or vinyl.

Since your siding plays such a key role in your homes curb appeal, it’s essential that you remove any dirt, grease, algae, mildew, and mold from its surface as soon as you notice it. We recommend cleaning it twice a year to keep it looking good. Here is a simple cleaning guide.

Cleaning the cement siding


  • Soft cloth
  • Soft brush
  • Garden hose
  • Non-abrasive soap or a specialized cleaning product

As with many other things, avoid using hard metal brushes or abrasive sponges as they will damage the sidings finish.

Preparing the Area

Brush off the sidings surface dirt or dust, then with your garden hose rinse the entire area. Work from the top to the bottom to prevent streaking or dripping onto the recently cleaned area.​

Removing Grease

Use the soft cloth to remove oil and greasy traces. Saturate the cloth with a mix of neutral pH soap and water. Clean the affected area while rinsing your cloth constantly. Once the siding is completely covered up in soap, rinse it.

Cleaning your home's cement siding

Eliminating Mildew and Mold

Scrub the area without applying too much pressure to find any signs of algae, mildew or mold. Spray your siding with a cleaning solution of your choice and allow it to sit for several minutes. Finally, rinse the area with your garden hose. Make sure to follow the label instructions on the product.

If you have any questions or need more tips for cleaning your fiber cement siding contact the experts from WestPro Roofing in Colorado. And if you need to install new siding on your home, we can also help. Call us to see what we have to offer.