A Step-by-Step Guide to Patching HardiPlank and Hardie Board Siding

When it comes to home maintenance, it can seem like there’s always a project. Thank goodness for YouTube, Google, and informative blogs that walk you through home projects. Some projects are simple enough to complete on your own. If you need to know how to patch HardiPlank and Hardie Board Siding yourself, you’ve come to the right place. It’s not too complicated with a bit of guidance.

What is HardiPlank and Hardie Board?

HardiPlank and Hardie Board are siding products manufactured by James Hardie, a company known for its high-quality products. They are designed for residential and commercial exteriors and are made from fiber cement, a mix of sand, cement, and cellulose fibers. They are popular choices because they are low-maintenance and long-lasting.

Patching HardiPlank and Hardie Board

Though HardiPlank and Hardie Board are durable sidings, damage can occur sometimes. Some common reasons your siding might need a patch include:

  • Cracks or chips: These can happen due to impact from hail or falling branches.
  • Water damage: If water gets behind the siding, it can cause the material to warp or rot.
  • Wear and tear: Even the best materials can show signs of aging, such as small holes or surface wear.

In this case, you can patch it with a cement patch product made of an acrylic mortar compound. You can find acrylic mortar compounds at several brands in local home improvement and hardware stores. The mortar bonds with the siding to give a finish texture similar to the original, blending it into the surrounding siding.

Materials Needed

Before you begin your patching project, gather all the materials you’ll need, including:

  • Replacement HardiPlank or Hardie Board
  • Fiber cement patching compound
  • Utility knife
  • Putty knife
  • Sandpaper
  • Paint (to match your siding)
  • Paintbrush or roller
  • Safety gear (gloves, safety glasses, dust mask)

Patching by Step

The most important thing when patching your siding is to take your time and do it right. Follow these steps for proper patching.

Step 1: Assess the Damage

It’s always good to know what you’re getting yourself into. First, look at the damage and assess how bad it is. Is it a small crack or hole that you can patch? Do you need to replace the whole section of the siding? You can use a fiber cement patching compound for small cracks and holes. You may need to replace a section of the siding for more extensive areas.

Step 2: Clean the Damaged Area

Before applying any patching material, clean the damaged area thoroughly. Remove any dirt, old paint, or debris. Then, using a utility knife, cut away any damaged or loose material around the crack or hole.

Step 3: Apply the Patching Compound

For minor cracks and holes, apply the fiber cement patching compound with a putty knife. Press the compound into the crack or hole and smooth it out to level the siding’s surface. For best results, follow the patching compound’s instructions.

Step 4: Sand it Down

Wait until the patching compound is completely dry, and then sand the area with sandpaper. This helps to smooth out rough edges and blend the patched area in with the surrounding siding.

Step 5: Prime and Paint

Once sanding is complete, it’s time to prime and paint the area you patched so it matches the rest of your siding. Use a paint made specifically for fiber cement siding. First, apply the primer and let it dry. Next, apply the paint. This helps to protect the patch and blend it in with the rest of the siding.

Step 6: Replace the Larger Sections

Patching is a time-saver for small sections and minor damage. However, patching won’t always do the trick for larger sections. Sometimes, you’ll need to do a Hardie board siding replacement. In this case, use a utility knife to remove the damaged piece of siding gently. Measure the new piece of HardiPlank or Hardie Board to fit the space and use nails or screws to attach it. Make sure it’s nice and secure. Then proceed with steps four and five: sand, prime, and paint.

Quick Siding Maintenance Tips

Patching is one way to maintain your HardiePlank and Hardie Board siding. Some more maintenance tips include:

  • Inspecting your siding regularly: Look for any signs of damage and wear at least twice a year.
  • Clean your siding regularly: Give your siding a gentle and quick clean regularly. Use a garden hose once a week to wash away dirt and grime. Avoid pressure washing as it is too harsh and can cause damage to the fiber cement.
  • Repaint when needed: If your paint is fading or chipping, you may want to repaint to protect your siding and keep it looking fresh.
  • Seal open gaps: Sealing gaps around doors, windows, or corners is essential to prevent water from getting behind the siding.

It may seem grueling to patch HardiPlank or Hardie Board siding, but it’s not difficult to do it properly with the right tools and steps. By performing simple maintenance and paying attention to any issues that arise, your siding can remain durable, protected, and beautiful for the long haul. A little tender, love, and care go a long way in preserving the look and quality of your siding. So, roll up your sleeves, follow the proper steps, and keep your siding looking pristine.

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