What is the cost to install weep screeds at the base of stucco walls in Ottawa?

Weep screeds are one of those small components that make an enormous difference in how your stucco wall performs over time, especially in Ottawa's wet climate. They're the perforated metal channels installed at the base of stucco walls that allow trapped moisture to drain out rather than sitting inside the wall assembly and causing rot or mould.

Weep Screed Installation Costs

For weep screed installation as part of a new stucco project, expect to pay $8 to $16 per linear foot installed. For an average Ottawa home with roughly 120–160 linear feet of wall base perimeter, that's $960 to $2,560 for the complete weep screed installation.

If you're retrofitting weep screeds into an existing stucco wall that was built without them — which is common on Ottawa homes from the 1970s through early 2000s — the cost jumps to $18 to $35 per linear foot because the bottom 6–12 inches of stucco needs to be carefully removed, the screed installed, and the stucco reapplied and blended. For a full perimeter retrofit, budget $2,200 to $5,600.

Here's what goes into the installation:

• Weep screed material: Galvanized steel or stainless steel perforated J-channel, $1.50–$3.50/linear foot for material. Always go with stainless steel or heavy galvanized in Ottawa — cheap lightweight galvanized corrodes within 5–8 years from road salt splash.- Placement height: The Ontario Building Code requires that stucco terminate at least 200mm (8 inches) above finished grade or 50mm above paved surfaces. The weep screed sits at this termination point, creating a clean drip edge.- Integration with drainage plane: The screed must lap over the weather-resistant barrier so that moisture travelling down behind the stucco exits at the screed rather than getting trapped behind it. This detail adds about $2–$4/linear foot in additional flashing and sealant work.- End dams and corners: At corners and termination points, the screed needs end dams to prevent moisture from flowing laterally off the edge. Each corner detail adds $15–$30.

Why this matters so much in Ottawa: during spring thaw and heavy rain events, wind-driven moisture penetrates stucco walls. Without a weep screed, that water collects at the base of the wall where the bottom plate of your framing sits — exactly where you least want sustained moisture contact. Ottawa building inspectors pay close attention to this detail on new construction, and for good reason. Sill plate rot from missing or improperly installed weep screeds is one of the most common and expensive stucco-related failures in our climate.

If your existing stucco wall has the stucco running all the way down to grade or into the soil, that's a red flag worth investigating. Even if you don't retrofit full weep screeds, at minimum have a contractor cut the stucco back to proper clearance above grade and install a drip edge. That alone ($6–$12/linear foot) can prevent thousands of dollars in future moisture damage.

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Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Homeupgraders
• JC Carpentry
• Eastern Residential Solution
• jbstuccodecor
• Nic’s D.U.C.T Works Inc

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