Mastering Drywall Crack Repair: A Comprehensive Guide for Homeowners

Why Do Drywall Cracks Happen?

Drywall cracks can look different. Knowing the types of cracks helps in fixing them.

Types of Drywall Cracks

Hairline Cracks: These tiny cracks appear on the surface paint or plaster. They are mostly a cosmetic issue.
Spiderweb Cracks: These cracks look like a spiderweb and usually show up because of bad installation or drying.
Settlement Cracks: These happen as your house’s foundation settles over time.

Common Reasons for Cracks

Figuring out why the crack happened is key to fixing it right.

Foundation Settling: When the ground underneath your house moves, it can cause cracks.
Temperature Changes: Hot and cold weather makes materials expand and contract, causing cracks.
Bad Installation: If the drywall wasn’t put up right, it might crack more easily.
Moisture: Too much moisture or leaks can weaken the drywall and cause cracks.

How Bad Are The Cracks?

Knowing how serious the cracks are helps decide the best way to fix them.

Small vs. Big Problems

Hairline and Surface Cracks: These are minor and usually easy to fix.
Deep and Widening Cracks: These could mean a bigger problem like foundation issues.

When to Call for Help

Cracks That Keep Growing: If a crack keeps getting bigger, it might be time to call a professional.
Bulging or Sagging Walls: If the wall is bulging or sagging, get expert help.

Tools and Stuff You’ll Need

Having the right tools and materials is important for fixing drywall cracks.

Basic Tools

Putty Knife: For spreading joint compound.
Utility Knife: For cutting drywall tape and cleaning cracks.
Sanding Sponge: For smoothing the dried compound.

Materials

Drywall Tape: To cover and support the crack.
Joint Compound: To fill and smooth the crack.
Primer and Paint: To match the repaired area to the rest of the wall.

Extra Tools (Optional)

Drywall Sander: For easier and better sanding.
Dust Mask: To protect from dust.
Drop Cloths: To keep your floor clean.

Steps to Fix Drywall Cracks

Getting Ready

Remove Loose Bits: Use a utility knife to clean out any loose material.
Clean the Area: Wipe the area with a damp cloth to get rid of dust.
Cover Floors: Use drop cloths to protect your floors and furniture.

Fixing the Crack

Apply Drywall Tape: Cut the tape to the length of the crack and press it on.
Spread Joint Compound: Use a putty knife to apply the joint compound over the tape.
Smooth the Surface: Smooth out the compound with the putty knife, removing any extra.

Sanding and Finishing

Let it Dry: Wait for the joint compound to dry completely.
Sand the Area: Use a sanding sponge to make the area smooth.
Clean Off Any Dust: Wipe the area with a damp cloth.

Painting

Prime the Area: Apply a coat of primer to the repaired area.
Paint to Match: Use paint that matches your wall color.
Check Your Work: Make sure the repaired area blends well with the rest of the wall.

Tips to Prevent Future Cracks

Regular Maintenance

Check for Leaks: Regularly look for leaks that could damage drywall.
Control Humidity: Use dehumidifiers or air conditioners to keep indoor moisture levels stable.

Use Quality Materials

Good Drywall: High-quality drywall lasts longer and cracks less.
Proper Fasteners: Use the right screws or nails when putting up drywall.

Watch Your Foundation

Regular Inspections: Check your foundation for any signs of settling.
Get Professional Help: If you see big foundation problems, get expert help.

Common Questions

Can I Fix Big Cracks Myself?: For big cracks, especially those showing structural issues, call a professional.
What if the Crack Comes Back?: If a crack reappears, there might be an underlying problem.
How Long Will the Repair Last?: A well-done repair can last many years, especially if the underlying problem is fixed.
Are Cracks in New Homes Normal?: Yes, as new homes settle, some minor cracks can appear.

Foundation Repair Canada