How should I prep kitchen cabinets for painting to ensure the finish lasts in Ottawa?

Cabinet painting is one of the most popular renovation projects in Ottawa right now -- and for good reason. A full kitchen cabinet replacement runs $15,000-$40,000+ depending on the kitchen size, while professional cabinet painting typically costs $3,000-$7,000 for a standard Ottawa kitchen. But cabinet painting is also one of the most prep-intensive paint jobs you'll ever encounter. Cut corners on prep and you'll have sticky doors, chipping edges, and fingerprint marks within months.

Why Cabinets Are Different from Walls

Cabinet surfaces face conditions that walls never do:

• Constant handling -- door and drawer faces are touched dozens of times daily


• Heat and steam from cooking -- Ottawa kitchens with gas ranges produce significant heat cycles


• Grease and food splatter -- even with a range hood, airborne grease settles on cabinet surfaces


• Humidity swings -- Ottawa kitchens cycle between bone-dry winter air (15-20% humidity with forced-air heating) and steamy summer cooking conditions

The paint film on cabinets needs to be harder, smoother, and better bonded than any wall paint, and that starts entirely with prep.

Step 1: Remove Everything

Remove all doors, drawers, and hardware. This is non-negotiable. Painting cabinets in place produces an inferior result every time.

Label every door and drawer with numbered tape (painter's tape + Sharpie). Take a photo of the layout before removing anything. Ottawa homes, especially those in Kanata, Barrhaven, and Orleans, often have kitchens with 20-30 doors that look similar but aren't interchangeable.

Remove all hinges, pulls, and knobs. Store hardware in labelled bags. If you're upgrading hardware, now is the time -- new hinges and pulls run $3-$8 each at Ottawa hardware stores.

Remove drawers and label the boxes (the cabinet frames). Drawer fronts are sometimes separate from the drawer box -- note which is which.

Step 2: Clean Aggressively

Kitchen cabinets have years of grease buildup that's invisible but absolutely lethal to paint adhesion.

TSP (trisodium phosphate) is the standard degreaser:

• Mix 60g per litre of warm water (double the wall-cleaning strength)


• Scrub every surface with a Scotch-Brite pad -- fronts, backs, edges, inside the frame openings


• Pay special attention to areas near the stove and above the dishwasher where grease and steam concentrate


• Rinse with clean water and let dry completely (24 hours in Ottawa's dry winter, 48 in humid seasons)

For extremely greasy cabinets, a first pass with Krud Kutter ($10-$15 per spray bottle) before TSP is effective.

Step 3: Sand for Adhesion

This is the step that separates lasting cabinet paint from paint that chips off at the edges within 6 months.

The goal is to create a uniform mechanical tooth on every surface:

• For existing painted or clear-coated cabinets: Sand with 150-grit sandpaper or sanding sponge. Cover every square inch -- flat areas, edges, profiles, inside panel details.
• For thermofoil/melamine (very common in Ottawa 1990s-2000s homes in Kanata, Orleans, and Barrhaven): These are plastic-coated and extremely slick. Sand with 120-grit to create real tooth, then use a bonding primer specifically designed for slick surfaces (more on this below).
• For oak grain (the classic 1980s-90s Ottawa kitchen): Sand with 120-grit to knock down the open grain. If you want a smooth, modern finish, you'll need to fill the grain with a grain filler product like Aqua Coat ($20-$25 per can) applied with a putty knife, dried, and sanded smooth with 220-grit. This adds 2-3 hours of work but transforms the final appearance.

After sanding, vacuum all surfaces with a brush attachment, then wipe with a tack cloth. Dust is the enemy of a smooth cabinet finish.

Step 4: Fill and Repair

• Fill any dents, dings, or holes with auto body filler (Bondo, about $12-$15) for hard surfaces, or wood filler for solid wood cabinets. Sand smooth with 220-grit.
• Caulk any gaps between frame pieces with paintable acrylic caulk.
• Check for delamination on thermofoil doors -- if the plastic film is pulling away from the MDF substrate, glue it down with contact cement or replace the door entirely. Painting over delaminating thermofoil is a waste of money.

Step 5: Prime with the Right Primer

This is the most critical product decision in the entire project.

Best choice: Shellac-based primer (Zinsser BIN)

• $55-$70 per gallon in Ottawa


• Bonds to virtually anything -- wood, thermofoil, melamine, previously painted surfaces


• Blocks tannin bleed from oak and cherry (prevents yellow/pink discolouration through white paint)


• Dries in 15 minutes, sandable in 45


• The overwhelming favourite among Ottawa cabinet painters

Alternative: Bonding primer (STIX by Insl-X or Zinsser 123 Plus)

• Better for thermofoil/melamine-specific adhesion


• Water-based, lower odour


• Allow 2-4 hours dry time before sanding

Apply primer with a foam roller (4-inch for flat areas) and a quality 2-inch angled brush (Purdy or Wooster) for detailed areas. Aim for a thin, even coat -- thick primer drips and obscures panel details.

After primer dries, sand with 220-grit and tack off. This sanding is essential for a smooth topcoat.

Step 6: Topcoat Selection

The topcoat must be hard, durable, and smooth:

• Benjamin Moore Advance ($65-$75/gal in Ottawa) -- alkyd-modified waterborne. Self-levels beautifully, cures to a rock-hard finish over 30 days. The top choice for brush-and-roller application.
• Benjamin Moore Scuff-X or Emerald Urethane by Sherwin-Williams ($70-$85/gal) -- waterborne with urethane hardener. More scuff-resistant than standard latex.
• For spray application: Fine Paints of Europe Hollandlac or lacquer through an HVLP sprayer produces the smoothest, most factory-like finish.

Apply two thin coats with 220-grit sanding between them. Let the final coat cure for 5-7 days minimum (ideally 14-30 days) before rehanging doors and loading the cabinets. In Ottawa's dry winter, curing happens faster than in summer humidity.

What Pros Charge in Ottawa

• Standard kitchen (15-25 doors): $3,500-$6,000 sprayed, $3,000-$5,000 brushed/rolled
• Large kitchen (25-35+ doors): $5,500-$8,500
• Per door (painted both sides, 2 coats): $75-$125

Ottawa pricing is typically 10-15% below GTA rates for equivalent quality. The savings come from lower overhead, not lower skill.

For cabinet painting specialists in Ottawa, check the Ottawa Construction Network directory for experienced contractors. And for any questions about your specific cabinet material or condition, Ottawa Paint Contractors' Paint IQ has the answers.