Fiber Cement Siding Repair Putty: A Guide To Fixing Your Home’s Exterior

Easy Ways to Install Fiber Cement Siding (with Pictures) wikiHow


If you’re a homeowner, you know how important it is to maintain the exterior of your home. One common issue that many homeowners face is damage to their fiber cement siding. Whether it’s due to weather conditions or just wear and tear over time, cracks and holes in your siding can be unsightly and even lead to bigger problems down the road. That’s where fiber cement siding repair putty comes in. In this article, we’ll discuss what fiber cement siding is, how to identify damage, and how to use repair putty to fix it.

What is Fiber Cement Siding?

Fiber cement siding is a popular choice for homeowners because it’s durable, fire-resistant, and low-maintenance. It’s made by mixing sand, cement, and cellulose fibers to create a material that looks like wood but is much more resistant to the elements. However, like any material, it can be damaged over time.

Identifying Damage

Before you can fix your fiber cement siding, you need to identify the damage. Look for cracks, holes, or other signs of damage. If you’re not sure if there’s damage, run your hand over the siding to feel for any irregularities. You can also use a flashlight to look for any areas where light is coming through, which could indicate a hole.

What is Fiber Cement Siding Repair Putty?

Fiber cement siding repair putty is a special type of filler that can be used to patch up holes and cracks in your siding. It’s made from a mixture of cement and other materials that create a durable and long-lasting repair. Repair putty comes in different colors to match your siding, so you don’t have to worry about it looking out of place.

How to Use Fiber Cement Siding Repair Putty

Using fiber cement siding repair putty is relatively easy. First, clean the area around the damage with a wire brush to remove any loose debris. Then, apply the putty to the damaged area using a putty knife. Be sure to press the putty firmly into the hole or crack to ensure a tight bond. Smooth out the putty with the putty knife and let it dry according to the manufacturer’s instructions.

Additional Tips

– If you have a larger hole or crack, you may need to use a patch before applying the repair putty. – Be sure to wear gloves and safety glasses when working with repair putty. – If you’re not confident in your ability to repair the siding, consider hiring a professional.


Fiber cement siding repair putty is a great solution for fixing damage to your home’s exterior. By following these simple steps, you can keep your siding looking like new for years to come. Remember to take your time and be careful when using the repair putty, and don’t hesitate to call a professional if you’re not comfortable making the repair yourself.