How to Fix Drywall Cracks in Corners
Quick Answer
Fixing drywall cracks in corners involves cleaning the area, applying joint compound, and using tape or a corner bead to ensure a durable repair.
My Experience as a Drywall Repair Professional
As the owner of Patch Pros, I’ve faced countless drywall challenges, but fixing cracks in corners is a frequent issue. Just last week, I was called to a home where the corners of the living room had developed noticeable cracks, likely due to settling issues. The cracks varied in size, some hairline and others much larger, leading to significant aesthetic concerns.
Armed with my trusty 8″ Taping Knife and fiberglass mesh tape, I cleaned the edges and ensured that the drywall was sound. I mixed up some lightweight joint compound and applied it with a skimming blade to ensure a smooth finish. After a few hours and some sanding, the cracks were no longer evident. The homeowners were thrilled, and that’s what keeps me passionate about drywall repairs!
Understanding Drywall Cracks in Corners
Why Drywall Cracks Happen
Cracks in drywall corners can be attributed to several factors, including:
- Settling of the Structure: As homes settle, stress is placed on drywall, especially in corners.
- Temperature Fluctuations: Expansion and contraction due to temperature changes can cause stress.
- Moisture Damage: In extreme cases, water damage can weaken the integrity of drywall and lead to cracking.
Tools You’ll Need for the Repair
Before you start your repair, gather these essential tools:
- Taping Knife: For applying joint compound.
- Skimming Blade: A wider tool to smooth the surface.
- Sanding Sponge: For finishing touches and smoothing.
- Drywall Joint Compound: Choose 3.5 Qt All-Purpose Joint Compound for a smooth finish.
- Fiberglass Mesh Tape: For additional strength in corners. You can find reliable options like this Fiberglass Mesh Tape.
Step-by-Step Guide to Fix Drywall Cracks
Step 1: Assess the Damage
Examine the cracks to determine their depth and length. If they’re large, you may need to take additional measures.
Step 2: Prepare the Area
- Use a utility knife to cut away any loose or flaking drywall around the crack.
- Clean the area with a damp cloth to remove dust and debris.
Step 3: Apply Joint Compound
- Using your taping knife, spread a layer of joint compound over the crack.
- For larger cracks, layer on some fiberglass mesh tape for additional support.
Step 4: Smooth the Surface
- Use a skimming blade to ensure the joint compound is flush with the wall.
- Ensure you feather the edges to blend with the surrounding area.
Step 5: Let it Dry
Allow the compound to dry completely, usually several hours or overnight.
Step 6: Sand the Area
Once dry, use a sanding sponge to smooth out the area. Feather the edges to create a seamless finish.
Step 7: Final Coat
Apply a second coat of joint compound for perfection, smooth it again once it’s dry, and sand as necessary.
Pro Tips for a Flawless Finish
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Choose the Right Compound: While a general-purpose joint compound works, you may want to consider lightweight options for easier application.
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Use Quality Tools: Investing in tools like the Level5 Finishing Box Handle or a quality set of skimming blades can save time and improve results.
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Patience is Key: Don’t rush the drying times! Allow each layer to cure fully to avoid cracks reappearing.
Common Mistakes to Avoid
- Not Cleaning the Area Properly: Dust and debris can prevent the compound from adhering.
- Skipping Reinforcement: If the crack is large, always reinforce with mesh tape.
- Applying Too Thick a Layer: Thin coats will usually produce a smoother finish than thick layers.
Frequently Asked Questions (FAQs)
What’s the best drywall tool for beginners?
The Taping & Finishing Set (Automatic Tool Set) is fantastic for beginners, offering everything you need for smooth results.
Are corner beads necessary?
Yes, using a corner bead helps to create a strong edge that protects against future damage.
How long does joint compound take to dry?
Typically, joint compound requires 24 hours to dry completely, depending on humidity and temperature conditions.
Conclusion
Fixing drywall cracks in corners is achievable with the right techniques and tools. By understanding the cause and carefully following these steps, you’ll restore your walls to their original beauty. Have you faced any persistent drywall issues in your home? Feel free to share in the comments below!
Share & Resources
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Together, let’s empower our communities with the knowledge to improve our homes, one drywall project at a time!
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By mastering the art of drywall repair, you can elevate your home improvement projects while also enhancing your DIY skills. Are there other drywall-related topics you want guidance on? Let us know below!
Stuck on a repair? Ask Joe.
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Joe is the founder and owner of Patch Pros, a premier drywall repair and painting company based in Saratoga Springs, NY. With over five years of hands-on experience in the field, Joe built Patch Pros on a foundation of quality craftsmanship and reliable service.
He launched Drywall Central as a one-stop resource to share the common mistakes he sees from both DIYers and contractors alike. By teaching the “real world” techniques that prevent callbacks and failed finishes, Joe is on a mission to make the world of drywall a better place—one flat wall at a time. When he isn’t on-site, he’s likely sharing his latest industry insights to help you achieve professional-grade results at home.