How to Repair Cracks in Drywall – A Simple Guide for Ottawa Homeowners

Drywall cracks are one of the most common issues homeowners in Ottawa face—especially in older homes or new builds settling over time. While they can look serious, most drywall cracks are easy to repair if you know what you’re doing.

In this guide, we’ll walk you through a DIY drywall crack repair you can do yourself—and explain when it’s best to call a professional drywall contractor.

🔍 Why Does Drywall Crack?

Before you grab your tools, it helps to understand why your drywall is cracking. Here are the most common reasons:

• House settling – very common in Ottawa’s seasonal climate

• Temperature or humidity fluctuations

• Poor taping during original construction

• Movement in framing or foundation

Cracks often appear above doors, along ceilings, or at seams where two drywall panels meet.

🧰 Tools & Materials Needed:

• Utility knife or drywall saw

• Drywall tape (paper or mesh)

• Joint compound or drywall mud

• 4–6 inch taping knife

• Sanding sponge (120–150 grit)

• Primer and paint to match your wall

✅ Step-by-Step: How to Fix Drywall Cracks

Step 1: Widen the Crack Slightly

Use a utility knife to open up the crack just a bit. This helps the compound bond properly. Remove any loose drywall or flaking paint.

Step 2: Apply Drywall Tape

Cover the crack with drywall tape. Paper tape is stronger for inside corners, while mesh tape is easier for flat surfaces.

Step 3: Add Joint Compound

Apply a thin layer of drywall mud over the tape with your taping knife. Feather out the edges to blend it into the wall. Let it dry.

Step 4: Apply a Second Coat

Once dry, add a second (or third) coat of compound, spreading it wider than the first. This ensures a seamless look.

Step 5: Sand Smooth

Lightly sand the patch until it’s flush with the surrounding surface. Wipe off any dust with a damp cloth.

Step 6: Prime and Paint

Apply a primer before painting to prevent flashing. Then paint the area to match the rest of your wall.

🧰 Pro Tip from Ottawa Drywall Experts:

If the crack keeps coming back after you’ve repaired it, it could be a sign of movement behind the wall or poor workmanship. In that case, it’s time to call a drywall specialist.

👷 Get Reliable Drywall Crack Repair in Ottawa

At R&G Walls, we’ve repaired countless drywall cracks in homes across Ottawa, Nepean, Kanata, Orleans, and surrounding towns. Our high-quality repairs are designed to last—not just look good for a week.

📞 Call or text 613-869-7391 for a quote🏠 Serving Ottawa & Eastern Ontario for over 20 years