What is the cost per linear foot for parging exposed foundation walls in Ottawa?

Parging exposed foundation walls is one of the most common exterior maintenance jobs in Ottawa, and for good reason — our freeze-thaw cycles are relentless on exposed concrete and block foundations. The typical cost in Ottawa runs between $8 and $18 per linear foot, assuming a standard exposed height of 12–24 inches above grade.

If you're measuring by square footage instead (which is more precise for taller exposures), expect $6 to $12 per square foot for a quality two-coat parging application.

What affects the per-foot price

Foundation condition: Clean, sound concrete that just needs a fresh parging coat is at the low end. If your existing parging is crumbling and needs to be chipped off first, add $3–$5 per linear foot for removal and surface prep. Many Ottawa homes from the 1960s–1980s have original parging that's well past its lifespan.

Foundation height: Most quotes assume 12–24 inches of exposed foundation. If your grade slopes and exposes 3+ feet of foundation on one side (common on Ottawa lots with walkout basements), the cost increases proportionally since you're covering more surface area.

Typical Ottawa project costs:

• Small bungalow (80–100 linear feet): $800–$1,600- Standard two-storey (120–160 linear feet): $1,200–$2,800- Large home with walkout (160–220 linear feet): $2,000–$4,000+

Minimum charges: Most parging contractors in Ottawa have a minimum job cost of $600–$1,000, so even a small patch job on one wall section will cost at least that much. If you only need one wall done, you might be paying a premium per linear foot.

For Ottawa applications, the mix matters enormously. A proper parging mix should use Type S mortar with an acrylic bonding admixture for freeze-thaw durability. Cheap parging using basic Portland cement and sand will crack within 2–3 Ottawa winters. Ask your contractor what mix they use — if they can't tell you, that's a red flag.

The application should be two coats minimum: a scratch coat for adhesion and a finish coat for weather protection and appearance. Single-coat applications are a common corner-cut that leads to premature failure. Each coat needs to cure for at least 24–48 hours, so the job typically spans two visits.

Best timing in Ottawa is May through October, with ideal conditions being overcast days above 10°C. Parging applied in direct hot sun can cure too fast and crack. A quality parging job on an Ottawa foundation should last 15–25 years if the mix and application are done right. Budget about $200–$400 for touch-ups every 5–7 years to stay ahead of any weather damage.

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