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House Paint 101: Why a $90 Gallon Beats a $30 Gallon, Which Sheen Goes Where, and Exterior Paint That Survives an Ontario Winter
Finishes and upgrades Paint From a builder
House Paint 101: Why a $90 Gallon Beats a $30 Gallon, Which Sheen Goes Where, and Exterior Paint That Survives an Ontario Winter
Paint is the cheapest finish in the house and the one you look at most, and the can tells you almost nothing. The difference between the $30 gallon and the $90 gallon is invisible on day one and obvious in year three, when one of them washes and the other comes off on the cloth.
Short version: Paint is pigment, binder and solvent. Cheap latex uses clay and chalk fillers and a vinyl-acrylic binder; good paint uses titanium dioxide and 100 percent acrylic, which is why it covers in fewer coats, scrubs clean and holds colour. For a new house: a quality primer on fresh drywall, then two coats of a good 100 percent acrylic; matte or eggshell on walls, satin in kitchens, baths and halls, semi-gloss on trim and doors, flat on ceilings; low- or zero-VOC throughout and ventilate while it cures. Outside, a 100 percent acrylic exterior paint or a penetrating stain on wood, applied above 10 degrees C with a dry week ahead, lasts 7 to 12 years on siding and 3 to 5 on decks. In 2026 a painter charges roughly $3 to $6 per square foot of floor area for a new interior, and quality paint adds $500 to $1,500 to a whole house and saves a repaint.
What is in the can
Three things, since the cave painters: pigment for colour and hide, binder to glue the pigment to the wall, and solvent (water, in latex) to carry it. The price is in the first two. Cheap paint hides with titanium dioxide cut with clay and calcium carbonate and binds with vinyl-acrylic; it covers, then rubs off, chalks and will not clean. Good paint uses more and finer titanium dioxide and a 100 percent acrylic binder, so it covers in two coats, holds the pigment tight enough to scrub, and keeps its colour. Dark colours at any price use less white base and more colorant, so they stay a little softer and burnish when scrubbed; the premium lines have reformulated colorants to fix that. The label will not tell you any of this; the price does, and so does a dab on a sample board you scrub with a damp cloth a week later.
Sheen, room by room
| Sheen | Where | Why |
|---|---|---|
| Flat / matte | Ceilings; walls in bedrooms and living rooms (a good matte scrubs now) | Hides drywall imperfections, no glare; cheap flat does not clean, good matte does |
| Eggshell | Most walls | The compromise: a little washability, still forgiving |
| Satin / pearl | Kitchens, bathrooms, halls, mudroom, kids’ rooms | Washable, resists moisture |
| Semi-gloss | Trim, doors, cabinets, window frames | Durable, wipeable, shows every brush mark and every bump in the wood |
| High gloss | Front door, furniture | Hard, shows everything |
A good flat outperforms a cheap satin; sheen is particle size, not quality.
A new house
- Fresh drywall is thirsty and the joint compound and the paper absorb differently; a PVA or a quality drywall primer first, tinted toward the final colour, or the walls flash and the finish coats go on uneven.
- Two finish coats, always; one coat over primer looks fine in March and thin in June.
- Low- or zero-VOC paint throughout. It is standard from the major makers now, costs nothing extra, and the house smells of nothing on move-in day. Formaldehyde in a new house explains why the air in a tight house matters.
- Ventilate during and for a week after; paint cures for a month, so no scrubbing until then.
- Trim and doors in a waterborne alkyd or an enamel: the hardness of oil, the clean-up of latex, no yellowing.
- Keep a labelled litre of every colour with the room name on the lid, and write the brand, line and code on the inside of the closet door.
Outside: the paint that survives here
- Siding and trim in wood or fibre cement: a 100 percent acrylic exterior paint over a primer, two coats, in the maker’s temperature window (above 10 degrees C, falling to no lower than 5 overnight) with a dry stretch ahead; 7 to 12 years on a sound substrate, less on the south and west walls.
- Stain on wood siding and decks: a penetrating semi-transparent stain weathers instead of peeling and recoats without stripping; solid stains behave like paint. Decks 2 to 4 years, siding 4 to 8.
- Pre-finished siding beats site-painted in Ontario by about double the life; siding types explains why.
- Back-prime wood trim and seal the end grain; that is where the paint lifts first.
- Freeze-thaw and sun are the enemies: a rainscreen behind the siding keeps moisture from pushing the paint off from behind, and a lighter colour on the west wall fades slower.
- A log or timber house wants a breathable finish and a schedule; log homes has it.
What it costs in 2026
| Ontario range | |
|---|---|
| Quality interior paint, per 3.78 L | $60 to $100 |
| Budget interior paint, per 3.78 L | $25 to $45 |
| Painter, new house interior, two coats plus primer, per sq ft of floor | $3 to $6 |
| Painter, exterior wood siding, per sq ft of wall | $3 to $7 |
| Whole-house difference, good paint vs cheap | $500 to $1,500 in material |
| Repaint saved | One, in year three |
The real cost of upgrades is where paint sits in the budget, which is near the bottom, and first-year maintenance explains why the first-winter drywall cracks are a touch-up and not a defect.
Related guides on this site
NEW: Interior painting costs for Ontario, 2026
This page covers the paint itself. For what a painter charges per square foot in Ontario, what a new-build paint allowance actually buys, and a calculator that prices your whole house, start here.
Interior Painting Cost in Ontario · Interior Painting Cost Calculator · Drywall, Taping & Painting hub
Sources and further reading
Questions people ask
What paint should I use on exterior wood in Ontario?
A 100 percent acrylic exterior paint over a primer, two coats, applied above 10 degrees C with a dry week ahead, or a penetrating semi-transparent stain that weathers instead of peeling. Back-prime the wood, seal the end grain, and expect 7 to 12 years on siding, 2 to 4 on a deck.
How often does an Ontario house need repainting?
Interior walls with good paint, 8 to 12 years or when you want a change; exterior painted wood siding, 7 to 12 years, sooner on south and west walls; stained decks every 2 to 4 years; pre-finished siding about double a site-painted life.
Which paint sheen goes in which room?
Flat or a good matte on ceilings and bedroom and living room walls, eggshell on most walls, satin in kitchens, baths, halls and kids' rooms, semi-gloss on trim, doors and cabinets.
Is expensive paint worth it?
Yes. Good paint covers in two coats, scrubs clean, and holds its colour; cheap paint uses fillers and a weaker binder and comes off on the cloth. The difference on a whole house is $500 to $1,500 in material and one repaint.
Have a plan already?
Send it to ICFhome.ca and we will tell you what it costs to build and where the drawing is spending money you may not want to spend.
Reviewed and updated October 2026. Costs are Ontario ranges, not quotes; code references are to the Ontario Building Code in force at that date.
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Frankly speaking, while choosing for paint there are less factors upon which one can judge the quality of the paint. Because for a non technical person, it is difficult to understand the technical terms to come up with the conclusions. But the blog can be really helpful in this regard. Next time, whenever I go to choose a paint, I will judge it on the factors mentioned here. Nice piece of writing.
Thank you
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