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Painting

Fresh paint changes everything — inside and out.

Written by Pavel Vysotckii

BCIN-certified building designer & Quantity Surveyor · Updated June 2026

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Project Overview

Timeline
2-5 days for a room, 1-2 weeks for whole house interior, 1-3 weeks for exterior
Difficulty
Low skill for simple rooms, higher skill for exteriors, high ceilings, or detailed trim work
Starting at
$2-$5 per sq ft
Best Season
Exterior painting limited to late spring through early fall (10-30°C, dry weather). Interior work is year-round.

Fixed Milestone Pricing

You approve each stage before it's paid

Overview

What is painting?

Painting is applying pigmented liquid to walls, ceilings, trim, siding, or decks to protect surfaces and change their appearance. Residential painters use water-based latex or acrylic paints for most interior work (low odour, fast drying, easy cleanup) and alkyd oil-based paints for trim, doors, and some exterior surfaces (harder finish, better flow, slower drying). Paint comes in different sheens: flat (no shine, hides imperfections, hard to clean), eggshell (slight sheen, washable), satin (soft glow, good for high-traffic areas), semi-gloss (shiny, durable, easy to wipe), and gloss (high shine, very durable, shows every flaw).

Prep work is 80% of a quality paint job. Painters fill holes and cracks with spackle or drywall compound, sand rough spots and old paint drips, wash greasy or dirty surfaces, and apply primer to bare drywall, wood, or stained areas. Primer seals porous surfaces, blocks stains, and helps topcoat adhesion — skip it and you'll see bleed-through, uneven colour, or peeling. Caulking goes along trim joints and cracks to create clean lines and block air leaks. Taping protects trim, windows, and floors from roller splatter.

Interior painting follows a sequence: cut in edges with a brush (around trim, corners, ceiling lines), then roll the main surfaces with a 3/8-inch or 1/2-inch nap roller. Two coats is standard — the first coat seals and evens out colour, the second coat provides full coverage and durability. Darker colours or big colour changes might need a tinted primer plus two topcoats. Ceilings get painted first (usually flat white), then walls, then trim (usually semi-gloss). Drying time between coats is 2-4 hours for latex, 8-16 hours for alkyd.

Exterior painting protects wood siding, trim, and decks from UV, moisture, and temperature swings. Ontario weather is hard on paint: freeze-thaw cycles crack and peel paint, and UV fades colour. Acrylic latex is the standard for siding — it breathes (lets moisture escape), flexes with temperature changes, and lasts 7-12 years. Oil-based alkyd is still used for some trim and doors because it levels better and resists dents. Surface prep is critical: pressure wash to remove dirt and loose paint, scrape and sand any peeling areas, prime bare wood and stained spots, caulk joints and gaps. Paint when temperatures are 10-30°C and no rain is forecast for 24-48 hours — too cold and paint won't cure, too hot and it dries too fast and cracks.

VOC (volatile organic compound) levels matter for indoor air quality. Traditional paints release VOCs as they dry, causing the "paint smell" and potential headaches or respiratory irritation. Low-VOC paints (under 50 g/L) and zero-VOC paints (under 5 g/L) are now standard for interiors in Ontario. Zero-VOC doesn't mean zero smell — you'll still smell some solvents — but it reduces offgassing significantly. Ventilate well during and after painting: open windows, run fans, and avoid sleeping in freshly painted rooms for 24-48 hours.

When you need painting

  • Refreshing interior walls and ceilings that look dingy, scuffed, or outdated
  • Repainting exterior siding, trim, or deck before paint fails completely (peeling, bare wood showing)
  • Changing interior colour schemes during renovations or staging a home for sale
  • Sealing new drywall after construction or repairs (primer + two topcoats)
  • Protecting bare wood trim, doors, or cabinets from moisture and wear
  • Covering stains from water damage, smoke, or previous bad paint jobs
  • Preparing rental units between tenants or updating curb appeal before listing a house
Step by Step

The Process

What happens from start to finish

1

Colour Selection and Planning

1-2 days

Choose paint colours (test samples on walls in different lighting), calculate square footage, and buy paint, primer, and supplies. Plan the sequence: ceilings first, then walls, then trim.

2

Surface Prep

1-3 days (interior), 2-5 days (exterior)

Fill holes and cracks with spackle or caulk, sand patched areas and any rough spots, wash walls to remove grease or dirt, and scrape off loose or peeling old paint. For exteriors, pressure wash and let dry completely.

3

Priming

0.5-1 day

Apply primer to bare drywall, wood, or any stained areas (water stains, smoke, dark colours). Primer blocks stains, seals porous surfaces, and improves topcoat adhesion. Let dry 2-4 hours.

4

Protect and Tape

0.5-1 day

Cover floors with drop cloths, tape off trim and window frames, remove or mask light fixtures and outlet covers. Taping takes time but creates clean lines and protects surfaces.

5

Cut In Edges

0.5-1 day

Use a 2-3 inch angled brush to paint a 2-3 inch band along ceiling lines, corners, trim, and around windows and doors. Cutting in first makes rolling faster and cleaner.

6

Roll Main Surfaces

1-2 days for first coat

Use a roller with 3/8-inch nap (smooth walls) or 1/2-inch nap (textured walls) to cover large wall and ceiling areas. Work in 3x3 foot sections, overlap edges, and maintain a wet edge to avoid lap marks.

7

Second Coat and Touch-Up

1-2 days

Wait 2-4 hours for latex or 8-16 hours for alkyd, then apply second coat using the same cut-in and roll sequence. After second coat dries, touch up any missed spots, remove tape, and clean up.

Pricing Transparency

Investment Guide

Painting costs depend on surface area, prep work complexity, paint quality, and labour rates ($35-$65/hour in Ontario). Repainting a room with minimal prep costs far less than painting new drywall or repainting severely damaged exteriors.

Interior walls (per square foot)

$2-$5 per sq ft

Depends on: Simple repaint vs new drywall, amount of trim and doors, ceiling height, colour change complexity

Single room (12x12 bedroom, walls and ceiling)

$300-$800

Depends on: One coat vs two coats, trim included or not, prep work needed (patching, sanding, priming)

Whole house interior (1,500-2,500 sq ft)

$3,000-$8,000

Depends on: Number of rooms, ceiling height (8 ft vs 10 ft vs vaulted), trim and doors included, amount of furniture moving and protection

Exterior painting (per square foot of siding)

$3-$7 per sq ft

Depends on: Single-story vs two-story, siding type (smooth vs textured), amount of scraping and prep, trim and soffits included

Whole house exterior (1,500-2,500 sq ft)

$5,000-$15,000

Depends on: Siding condition (minimal prep vs heavy scraping), number of stories, trim and shutters, deck or porch railings included

Deck or fence staining/painting

$500-$2,500

Depends on: Deck size, solid stain vs semi-transparent, sanding or stripping old finish, railings and spindles (labour-intensive)

Permits
Usually Not Required

What Affects the Price

Paint quality ranges from $25/gallon (builder-grade) to $60-$80/gallon (premium zero-VOC with better coverage and durability) — cheap paint needs more coats and doesn't lastHigh ceilings (10 feet or vaulted) increase labour time due to scaffolding, ladders, and slower cutting-inDark colours or bold colour changes require tinted primer and sometimes three coats for full coverageExtensive prep (patching holes, sanding rough drywall, priming stains) can double labour time vs simple repaintsExterior painting is seasonal in Ontario (May-October) — demand spikes and prices rise in summerSpray painting is faster for exteriors and new construction but requires extensive masking and produces overspray — not ideal for occupied homes with landscaping nearby

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How You Pay

Fixed Milestone Pricing, Approved by You

Every painting project runs on fixed milestone pricing. The plan is signed before work starts, and you approve each stage before it's paid.

  • Plan Signed Before Work Starts

    Every milestone and its price is written into the contract up front — no surprise extras.

  • Review in the Live App

    Daily photos, inspection reports, and spend vs budget land in your client app at every phase.

  • You Approve Each Milestone

    A stage is only paid after you review the work and sign off in the app.

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Project Center

Painting

In Progress
Deposit15%
Surface Prep25%
Priming30%
Final + Holdback30%

Milestone Progress

Milestone 3 of 4

Approved by you

Reduce your cost — see available rebates and incentives

GTA homeowners can stack federal, provincial, and municipal programs for significant savings.

Common Painting Mistakes That Show Up Later

  • Skipping primer on new drywall, stained areas, or colour changes — leads to uneven colour, bleed-through, and poor adhesion
  • Not cleaning or sanding walls before painting — paint won't stick to greasy, dirty, or glossy surfaces
  • Painting in cold or humid weather (under 10°C or over 85% humidity) — paint won't dry or cure properly, leading to poor adhesion and finish defects
  • Using cheap paint or only one coat to save money — you'll repaint sooner because coverage is poor and durability is low
  • Not back-rolling after spraying (exterior) — spray alone doesn't push paint into siding texture, reducing adhesion and lifespan
  • Removing painter's tape too soon (before paint dries) or too late (after paint fully cures) — causes peeling or ragged edges
  • Painting over mold, mildew, or moisture problems without fixing the source — paint will peel and the problem will return
  • Not ventilating during and after painting — VOCs build up indoors, causing headaches and respiratory irritation

Trusted by Ontario Homeowners

One licensed crew and a live client app on every painting project

Licensed

OBC Licensed, Insured & WSIB Covered

Live App

Daily Photos & Inspection Reports

Fixed Price

Milestones You Approve

Related Services

Cleaning

Deep cleaning walls and trim before painting improves adhesion and finish quality

Learn more

Framing

New framing or drywall repairs must be completed and sanded before painting

Learn more

Additions

New additions need interior and exterior painting to match existing home finishes

Learn more

Handyman

Handyman services often include small paint jobs, touch-ups, or single-room repaints

Learn more
FAQ

Common Questions

How many coats of paint do I need?
Two coats is standard for most interior and exterior painting. The first coat seals the surface and evens out colour, the second coat provides full coverage and durability. You might get away with one coat if you're repainting the same colour over a well-prepped surface with premium paint, but two coats always looks better and lasts longer. Drastic colour changes (white to dark red, dark blue to white) often need tinted primer plus two topcoats.
What's the difference between flat and eggshell paint?
Flat (matte) paint has no sheen, hides wall imperfections, and creates a smooth, velvety look — but it's hard to clean and scuffs easily. Eggshell has a slight sheen (like an eggshell), is more washable, and resists scuffs better while still hiding minor flaws. Use flat for low-traffic areas like adult bedrooms and ceilings. Use eggshell or satin for living rooms, hallways, and kids' rooms where you need to wipe down walls. Semi-gloss goes on trim, doors, and kitchens/bathrooms because it's very durable and easy to scrub.
Do I really need primer?
Yes, in most cases. Primer is essential on new drywall (seals the porous surface and prevents topcoat from soaking in unevenly), bare wood (blocks tannin bleed and improves adhesion), and stained areas (blocks water stains, smoke, crayon, or dark colours from bleeding through). Skipping primer on these surfaces leads to uneven colour, bleed-through, and poor durability. If you're repainting a clean, well-prepped wall in a similar colour, you might skip primer — but adding primer is cheap insurance for a better finish.
When can I paint exterior in Ontario?
Paint when daytime temperatures are consistently 10-30°C and no rain is forecast for at least 24-48 hours after application. In southern Ontario, that's roughly May through October. Avoid painting in direct hot sun (paint dries too fast and can crack) or in high humidity (paint won't cure properly). Early morning or late afternoon in mild weather is ideal. Cold temperatures (under 10°C) prevent proper curing, and painting in fall when nights drop below 5°C can ruin the finish.
How long does exterior paint last in Ontario?
Good-quality acrylic latex paint lasts 7-12 years on siding, depending on sun exposure, colour (dark colours fade faster), and surface prep. South and west-facing walls take the most UV and weather damage and may need repainting sooner. Wood siding needs repainting more often than vinyl or fiber cement. Oil-based alkyd on trim can last 10-15 years. Signs it's time to repaint: chalking (powdery residue on your hand when you touch the paint), fading, peeling, or bare wood showing.
Should I spray or roll interior paint?
Rolling is standard for occupied homes: it's controllable, creates good texture, and doesn't require extensive masking. Spraying is faster for large new-construction projects or empty rooms, but overspray gets everywhere — you have to mask windows, floors, fixtures, and anything you don't want painted. Many pros spray and back-roll (roll over the sprayed paint immediately) to push paint into the surface and create even texture. For most homeowners, rolling is the practical choice unless you're painting an empty house.
What causes paint to peel?
Peeling happens when paint loses adhesion to the surface. Common causes: moisture (leaking roof, plumbing leak, high humidity) pushing paint off from behind; painting over dirty, greasy, or glossy surfaces without cleaning or sanding; skipping primer on bare wood or drywall; painting in cold or wet weather so paint never cures properly; using low-quality paint that doesn't flex with temperature changes. Fix the underlying moisture or surface problem first, then scrape, sand, prime, and repaint.
What's the difference between zero-VOC and low-VOC paint?
VOCs (volatile organic compounds) are solvents that evaporate as paint dries, creating the "paint smell" and contributing to indoor air pollution. Low-VOC paints have under 50 grams per liter of VOCs, while zero-VOC paints have under 5 g/L. Zero-VOC doesn't mean zero smell — you'll still smell some odour from pigments and resins — but it significantly reduces offgassing and is better for indoor air quality, especially in bedrooms and kids' rooms. Performance is now comparable to traditional paints, so zero-VOC is worth choosing for interiors.
What are drywall finish levels and why do they affect my paint job?
The Gypsum Association defines six finish levels (GA-214 standard), and your painter needs to know which level you have before choosing paint sheen. Level 0 is unfinished (temporary construction). Level 1 is fire taping — tape embedded in compound, no smoothing — used above ceilings and in plenums. Level 2 is for garages and warehouses: tape plus one thin coat of compound over joints and fasteners. Level 3 is for heavy-texture finishes: two coats on joints, one on fasteners, suitable for heavy spray or knockdown texture. Level 4 is standard residential: two coats on joints, three on fasteners, sanded smooth — suitable for flat paint, light textures, and wallcovering. Level 5 is the highest quality: a skim coat of compound over the entire surface. Here is the critical part most homeowners miss: semi-gloss and gloss paint will show every joint, fastener, and tool mark on Level 4 walls. Gloss paint on Level 4 drywall looks terrible in raking light — you see shadows along every seam. If you want gloss or semi-gloss (kitchens, bathrooms, trim), specify Level 5 finish from your drywall contractor. It costs 30-50% more in finishing labour but saves you from repainting after you see the shadows.
Why do I see lines in my walls where the drywall joints are after painting?
That is called joint photographing, and it happens because the taped joint area has different porosity and texture than the paper face of the drywall board. Paint dries differently over joint compound vs paper, creating a visible shadow — especially in low-angle light (morning sun through windows, recessed lights). Causes: (1) skipping primer — bare drywall paper absorbs paint differently than compound, so the joint area shows through, (2) using flat paint over poorly finished joints — flat paint hides texture but shows porosity differences, (3) insufficient coats of joint compound — the tape edge creates a ridge that casts a shadow in raking light, (4) applying paint too thin or in inconsistent thickness over joints. Fixes: use a PVA drywall primer on new drywall (seals porosity differences), apply paint in consistent thickness, and if joints are already showing through paint, apply a skim coat (Level 5 finish) over the affected areas, re-prime, and repaint. In rooms with lots of natural side-light (large windows), photographing is almost inevitable at Level 4 finish.

Where we do this work

Based in Toronto, working across the GTA

TorontoMississaugaBramptonVaughanMarkhamRichmond HillAuroraOakvilleBurlingtonMiltonAjaxPickeringOshawaWhitbyHamilton

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Fixed Milestone Pricing
Licensed & Insured
10% Holdback