Table of Contents
- Quick Answer
- Professional Drywall and Plaster Repair
- Setting-Type vs Drying-Type Compound: The Choice That Determines Whether Your Patch Lasts
- The 72-Hour Mould Window: Water Damage You Can't Just Paint Over
- Types of Drywall Damage We Repair
- Water Damage and Moisture Issues
- Drywall Damage Assessment
- Drywall Repair Process
- Why Choose Condo Painters Pro for Drywall Repair
- Toronto Neighborhoods We Serve
- Related Services
- Get Your Free Drywall Repair Quote
Quick Answer
Drywall repair in Toronto costs from $150 to $800+ depending on damage extent. Nail holes run $0-$50. Cracks under 12 inches cost $75-$150. Water damage and extensive damage cost $200-$800+. We assess all damage, provide a fixed price, repair professionally, and finish with paint. Expert patching is critical before any painting project.
Get your free drywall repair quote here.

Professional Drywall and Plaster Repair
Drywall repair done correctly is invisible after paint. Done incorrectly, every patch telegraphs through the finish within six months. The difference comes down to two things most homeowners never see: the tape and the compound. For any crack wider than a hairline, we use self-adhesive fibreglass mesh tape bridging the joint, then bed it in a setting-type compound like CGC Durabond 20, 45, or 90, which cures through chemical hydration in 20 to 90 minutes and stays hard enough to absorb future seasonal joint movement.
The wrong product is the most reliable failure mode. Ready-mix bucket compound (CGC Sheetrock All-Purpose) cures by water evaporation over 24 hours and stays soft. It's the right tool for the final feathered skim coat, where workability matters more than strength, but using it under mesh tape on a structural crack means the crack returns within a season. Almost every "but I already fixed this" call we get traces to this single mistake.
For water-damaged drywall the diagnostic comes first, the patch comes second. A small bleach test (1 part bleach to 5 parts water, applied with a cotton swab to an inconspicuous edge) lifts a true water stain within 15 minutes. If the stain stays unchanged or shows fuzzy edges, you have mould rather than just a stain, and the conversation escalates to remediation before any paint goes on. We never paint over active moisture, and we never paint over visible mould. Both will resurface through the finish within weeks.
What's Included in Drywall Repair
- Damage assessment: We inspect all walls and ceilings, identify damage, and assess what needs repair
- Hole repair: We fill nail holes and small holes with spackling compound
- Crack repair: We tape and spackle cracks, with multiple coats for seamless finish
- Water damage repair: We remove damaged drywall, replace with new board, and finish
- Plaster repair: For older homes, we use proper plaster patching techniques
- Sanding and finishing: We sand all repairs smooth and feather edges so they blend
- Priming: We prime all repaired areas before final paint
- Paint finishing: We paint repaired areas so they match surrounding walls
Drywall Repair Pricing in Toronto (2026)
| Repair Type | Description | Price Range |
|---|---|---|
| Nail holes | Per hole, usually 5-20 holes per room | $0 - $50 (often included with painting) |
| Small cracks | Under 12 inches, simple repair | $75 - $150 |
| Medium cracks | 12-36 inches, may need multiple coats | $150 - $350 |
| Large cracks | Over 36 inches or multiple cracks | $300 - $600 |
| Water stains | Light stains, priming and paint | $100 - $300 |
| Small water damage | Hole under 12 inches, repair and paint | $200 - $400 |
| Large water damage | Extensive damage, board replacement | $500 - $1,500+ |
| Plaster patching | Historic home plaster repair | $150 - $500+ |
All pricing includes assessment, repair materials, sanding, priming, and paint finish.
Setting-Type vs Drying-Type Compound: The Choice That Determines Whether Your Patch Lasts
Joint compound comes in two chemistry families and most homeowners (and a surprising number of contractors) treat them as interchangeable. They aren't. The wrong choice on a structural repair is the #1 reason patches reopen within a season. The honest matrix:
| Compound | Cure mechanism | Set time | Hardness | Right job |
|---|---|---|---|---|
| CGC Durabond 20 (setting-type) | Chemical hydration | 20 min | Very hard | Crack repair under mesh tape, deep fills, structural patches |
| CGC Durabond 45 (setting-type) | Chemical hydration | 45 min | Very hard | Same as above with more working time |
| CGC Durabond 90 (setting-type) | Chemical hydration | 90 min | Very hard | Large deep fills needing extended working time |
| CGC Sheetrock All-Purpose (drying-type) | Water evaporation | 24 hr | Medium-soft | Final feathered skim, embedding paper tape on flat seams |
The reliable failure mode is using ready-mix bucket compound (drying-type) under mesh tape for crack repair. It cures too soft to hold the joint movement, the crack telegraphs through the patch within a season, and you're back to repaint. Almost every "but I already fixed this" call we get traces back to this exact combination.
The 72-Hour Mould Window: Water Damage You Can't Just Paint Over
Drywall that's been wet has a 72-hour window before mould colonisation begins inside the wall cavity, per restoration-industry consensus on drying timelines. Past that window, painting over the stain locks the moisture in and creates a microbiology problem that surfaces six to eighteen months later as black staining and a musty smell that no amount of stain-blocking primer will hide.
Our protocol on any visible water stain: confirm the source has been resolved by your building or a plumber, measure the wall moisture content with a pin-type moisture meter (we want under 16 percent on drywall, under 1 percent wood-moisture-equivalent), and assess for visible or olfactory mould. If the cavity has been wet for more than 72 hours we recommend opening a small section to inspect the back side of the drywall before committing to a paint repair. A clean back-side gets a stain-blocking primer and finish coats; a contaminated back-side gets cut out and replaced before any paint goes on.
Types of Drywall Damage We Repair
Nail Holes and Picture Hangers
The most common drywall damage. Over time, homes accumulate hundreds of nail and picture hanger holes.
How we fix:
- Identify all holes
- Fill with spackling compound using a putty knife
- Sand smooth once dry
- Prime and paint
Most people do not notice nail holes until a home is painted. Good prep catches them all.
Cracks: Small and Large
Cracks form due to:
- Building settlement and age
- Temperature swings causing wood frame to shift
- Humidity changes
- Foundation movement
- Poor original taping or joint compound
Small cracks (under 12 inches):
- Clean out loose material
- Apply mesh tape over crack
- Apply joint compound over tape
- Sand smooth
- Apply second coat if needed
- Prime and paint
Large cracks (12-36 inches or longer):
- Clean out loose material
- Apply mesh tape along full length
- Apply first coat of joint compound
- Let dry, sand lightly
- Apply second coat
- Sand smooth
- May need third coat for seamless finish
- Prime and paint
Larger cracks take more time because each coat must dry and be sanded before the next coat. But done properly, the repair is invisible.
Water Damage
Water damage indicates moisture problems that must be addressed first. We repair the visible damage (stains, soft drywall) but the underlying leak must be fixed.
Light water stains:
- Prime with stain-blocking primer
- Paint over
Soft or wet drywall:
- Cut out damaged section
- Replace with new drywall board
- Tape and finish all joints
- Prime and paint
If drywall is crumbling or severely damaged, it must be cut out and replaced. We do this work and finish the repair so paint coverage is seamless.
Plaster Repair (Older Toronto Homes)
Older homes (pre-1960) often have plaster walls instead of drywall. Plaster is harder and requires different repair techniques.
Plaster crack repair:
- Clean out loose plaster
- Apply mesh tape
- Use plaster patching compound (not drywall joint compound)
- Apply and feather smooth
- Sand carefully (plaster is harder and dusts differently)
- Prime and paint
Plaster repair is more involved than drywall, but we have extensive experience with Toronto's older homes and historic properties.
Water Damage and Moisture Issues
Water damage is serious. It indicates a leak that must be fixed before we repair walls.
Common Water Damage Sources
Roof leaks:
- Water seeps down from above
- Creates stains and soft spots on ceilings and upper walls
- Roof must be repaired first
Plumbing leaks:
- Water leaks from pipes behind walls
- Creates wet, soft drywall
- Plumbing must be repaired first
Window and door leaks:
- Water seeps around frames
- Creates stains and damage around openings
- Seals and caulking must be repaired first
Bathroom moisture:
- Bathrooms are wet; moisture can seep into walls
- Proper ventilation and caulking prevent problems
- Water stains indicate moisture issues
Condensation:
- In poorly ventilated spaces, condensation builds and damages drywall
- Ventilation improvements are needed
Our Water Damage Approach
- Identify the source. We determine where water is coming from.
- Recommend repair. We advise what needs to be fixed (roof, plumbing, ventilation, caulking).
- Repair damage once source is fixed. Once the leak is addressed, we repair visible water damage.
- Prime and paint. We finish with stain-blocking primer and paint.
We do not paint over water damage. We fix the problem and make repairs right.
Drywall Damage Assessment
During every painting quote, we assess wall and ceiling condition:
- Do you have cracks? Where, how large, how many?
- Do you have nail holes? How many, how large?
- Is there water damage? Where, how extensive?
- Is there damage from previous repairs? Are old patches visible or blended?
- Is paint peeling? Why (moisture, poor prep, humidity)?
We identify everything and include repair in our quote. Good prep work is the difference between amateur and professional results.

Drywall Repair Process
Step 1: Damage Assessment
You request a quote and we visit. We inspect all walls and ceilings with lights and close attention. We identify every crack, hole, and area of damage. We assess what can be repaired and what might indicate structural issues.
Step 2: Repair Planning
We create a repair plan. We tell you what we found, what needs repair, what the cost is, and how long it takes.
Step 3: Hole Filling
We fill all nail holes with spackling compound. We use a putty knife to press spackle into holes and scrape smooth.
Step 4: Crack Taping
We apply mesh tape over all cracks. Tape bridges the crack and prevents new cracking.
Step 5: Joint Compound (First Coat)
We apply joint compound (drywall mud) over tape. We feather the edges so the repair blends with surrounding wall.
Step 6: Drying and Sanding
We let the first coat dry fully (usually 24 hours). We sand lightly to smooth and prepare for second coat.
Step 7: Joint Compound (Second Coat)
We apply second coat, feathering wider than the first coat so seams are invisible.
Step 8: Final Finishing
Depending on repair size, we may apply a third coat. We sand smooth and feather edges so repair is seamless.
Step 9: Priming
We prime all repaired areas with Benjamin Moore primer. This seals the new joint compound and ensures even paint coverage.
Step 10: Painting
We paint over repairs, ensuring paint matches surrounding walls perfectly.
Why Choose Condo Painters Pro for Drywall Repair
- Expert assessment. We identify all damage, even small cracks and holes others miss.
- Proper techniques. We tape and spackle correctly with multiple coats if needed for seamless results.
- Patience and detail. Good drywall repair takes time. We do not rush.
- Seamless finishing. Our repairs are invisible once painted. You will not see patched areas.
- Honest about structural issues. If damage indicates something serious, we tell you and recommend professional assessment.
- Included with painting. When repairing and painting together, we streamline the process.
- Fixed-price quotes. We assess damage and give you an honest price upfront.
- 5-year workmanship warranty. We stand behind repairs. If cracks reappear due to our work, we fix them.
Drywall repair is foundational to good painting. It is worth doing right. Fresh, smooth walls are the canvas for flawless paint.
Toronto Neighborhoods We Serve
We repair drywall across the Greater Toronto Area: Downtown Toronto, North York, Etobicoke, Scarborough, Markham, Richmond Hill, Mississauga, Vaughan, Oakville, and beyond. We work on historic homes, modern condos, and everything in between.

Related Services
Pair drywall repair with these complementary services:
- Interior Painting, Paint walls and ceilings after repair
- Bathroom Painting, Repair bathroom water damage before painting
- Wallpaper Removal, Remove wallpaper, repair wall, then paint
- Ceiling Painting, Repair ceiling cracks before painting
Get Your Free Drywall Repair Quote
Ready to repair your walls? Call us at (416) 896-1071 or request your free quote. We will assess all damage, explain what needs repair, and give you an honest price. Most repairs are included when painting is done together.
