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DIY Guide to Repairing a Cracked Drywall


A cracked drywall can be an unsightly and frustrating issue to deal with, but fear not! With a bit of patience and the right tools, you can easily repair those cracks and restore the smooth, flawless look of your wall. In this DIY guide, we'll walk you through the step-by-step process of repairing a cracked drywall, whether it's a hairline fracture or a more significant gap. Let's dive in!

Materials You'll Need

Before you get started, make sure you have the necessary tools and materials on hand:

  • Joint compound

  • Mesh tape or paper tape

  • Putty knife in various sizes

  • Sandpaper (medium and fine grit)

  • Primer

  • Paint that matches your wall color

  • Utility knife

  • Sponge and water (for cleaning)

  • Drop cloth or plastic sheeting

  • Step-by-Step Repair Guide

Assessment: Begin by examining the crack closely. If it's a hairline crack, it's often indicative of the house settling, temperature changes, or minor shifts. If it's a larger crack, it could be due to more serious structural issues that might require professional attention.

Preparation: Lay down a drop cloth or plastic sheeting to protect the surrounding area. Clean the cracked area using a damp sponge to remove any dust, debris, or loose paint.

Enlarge the Crack: Use a utility knife to carefully widen the crack slightly. This helps create a better bond for the joint compound. Make sure the edges of the crack are smooth and even.

Apply Mesh Tape: For larger cracks, apply self-adhesive mesh tape over the crack. This tape helps reinforce the joint compound and prevents the crack from reappearing. Press the tape firmly into place using a putty knife.

Apply Joint Compound: Using a putty knife, apply a thin layer of joint compound over the crack or tape. Extend the compound beyond the edges of the crack to ensure a smooth blend with the surrounding wall. Allow it to dry according to the manufacturer's instructions.

Sand and Repeat: Once the first layer of joint compound is dry, sand it gently with medium-grit sandpaper. Wipe away the dust with a damp cloth. Apply a second layer of joint compound, extending it further than the first layer. Let it dry and sand again.

Final Layer and Sanding: Apply a final thin layer of joint compound, feathering the edges to seamlessly blend it into the wall. Let it dry and then sand with fine-grit sandpaper until the surface is smooth and even.

Prime the Repaired Area: Before painting, apply a coat of primer to the repaired area. Primer helps create a uniform surface for the paint to adhere to and prevents the joint compound from soaking up the paint unevenly.

Painting: Once the primer is dry, you can paint the repaired area with a color that matches the rest of the wall. Use a brush or roller, and apply multiple thin coats if necessary to achieve a seamless finish.

Admire Your Handiwork: Stand back and admire your beautifully repaired drywall! The once-unsightly crack should now be practically invisible, and your wall will look as good as new.

Tips and Tricks

Patience is Key: Take your time throughout the process. Rushing can lead to uneven results and the need for further repairs.

Feathering Technique: When applying joint compound, use a feathering technique by gradually decreasing pressure on the putty knife as you move away from the center of the repair. This creates a smooth transition between the repair and the surrounding wall.

Sand Between Layers: Sanding between layers of joint compound is crucial for achieving a seamless finish. It helps to create a smooth surface and removes any imperfections.

Paint Blending: To ensure that the repaired area blends seamlessly with the rest of the wall, consider painting a larger section of the wall rather than just the repaired spot. This helps disguise any subtle variations in paint color or texture.


Repairing a cracked drywall might seem like a daunting task, but with the right tools and a little know-how, it's a project that you can tackle on your own. Remember to assess the severity of the crack, prepare the area properly, apply joint compound in layers, and take your time with sanding and painting. With your newly acquired skills, you'll be able to confidently repair cracked drywall and maintain the flawless appearance of your home's interior.

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