What is the price difference between one coat and two coats of exterior paint in Ottawa?

The price difference between one coat and two coats of exterior paint in Ottawa is typically 25–40% more for the second coat, not double the price as you might expect. The reason is that most of the cost in exterior painting is in the prep and setup — scaffolding, power washing, scraping, priming, masking, and access — which stays the same regardless of how many finish coats you apply.

Here's a practical example for a typical Ottawa two-storey home:

• One finish coat (over proper prep and primer): $5,500 to $7,500
• Two finish coats (over proper prep and primer): $7,000 to $9,500
• Difference: Roughly $1,500 to $2,500 for the second coat

That second coat is almost entirely additional labour time (1–2 extra days for a crew) plus 50–75% more paint (you use slightly less on the second coat because the surface is already sealed). Material-wise, that's an extra 8 to 15 gallons at $55 to $80 per gallon depending on the product line.

Now, here's the honest truth from a practical standpoint: in Ottawa, two coats is almost always worth it, and most reputable painters won't even offer a single-coat option for exterior work. Here's why:

Ottawa's climate is among the most punishing in Canada for exterior paint. You're dealing with:

• Temperature extremes from -30°C to +35°C — a 65-degree swing that causes constant expansion and contraction


• 200+ cm of annual snowfall driving moisture against siding


• Freeze-thaw cycles — dozens per year, each one working moisture into any thin spot in the paint film


• Intense summer UV that degrades the resin binders in paint


• Ice and snow contact on lower walls, soffits, and trim

A single coat of even premium paint provides roughly 1.5 to 2.0 mils of dry film thickness. Two coats give you 3.0 to 4.0 mils. That extra thickness provides dramatically better protection against moisture penetration, UV degradation, and the mechanical stress of thermal cycling. In a mild climate, the difference might be 1–2 years of extra life. In Ottawa, two coats can mean 10–12 years between repaints versus 5–7 years with one coat.

Do the math on that: paying $2,000 more now to avoid a $7,000+ repaint job five years sooner is an easy financial decision.

There are a few scenarios where a single finish coat might be acceptable:

• Same colour, maintenance repaint: If you're repainting the same colour over paint that's still in decent shape (not peeling, just faded), one coat over a spot-primed surface can provide adequate coverage
• Colour refresh on newer paint: If the existing paint is only 5–6 years old and you're freshening it up in the same shade
• Budget constraint on a rental property: Where longevity is less of a priority

But for any colour change, any surface with significant bare wood or primer showing, or any home you plan to live in long-term, two coats is the standard.

In heritage areas like Rockcliffe Park, New Edinburgh, or the Centretown Heritage Conservation District, where heritage guidelines may specify particular colours or finishes, you'll definitely want two coats to maintain the depth of colour and protect the often century-old wood trim details.

When getting quotes, ask specifically:

• How many coats of primer on bare wood? (Should be one full coat minimum)


• How many coats of finish paint? (Two is standard)


• What specific product is being used? (Premium paints with higher resin content perform better in one coat than budget paints do in two)

Any exterior painter in Ontario should carry WSIB coverage — working at height on ladders and scaffolding makes this essential.

Browse Ottawa Paint Contractors on the Ottawa Construction Network directory to find exterior specialists who understand our climate demands. The cheapest quote is rarely the best value when it comes to protecting your home's exterior.