Southern Ontario eavestrough cost guide, 2026 prices: aluminum 5" vs 6", soffit and fascia, micro-mesh guards, and ice-dam prevention for Toronto and GTA homes.
The quick version
- What “A+” looks like: seamless aluminum (5" or 6"), correct slope, 3×4" downspouts on big or steep roofs, tight hanger spacing, smart outlet placement, extensions away from the foundation, and optional micro-mesh guards.
- Price snapshot: ~$4,000+ for a typical eavestrough-only replacement on a GTA home. Soffit and fascia cost extra. Full system (eavestrough + soffit + fascia) often lands near $12,000 depending on size and complexity.
- 5" vs 6": 6" eavestrough with 3×4" downspouts moves roughly 40–50% more water — worth specifying for large roof planes, heavy rainfall exposure, or homes surrounded by mature trees.
- Cold-climate note: Ice dams are a building-science problem. Pair drainage fixes with attic air-sealing, insulation, and ventilation. See the in-depth forum thread on whether gutter guards cause ice dams.
What drives the cost range
In the GTA, seamless aluminum eavestrough is typically quoted at $12–$22 per linear foot installed. A typical semi-detached home has 80–120 linear feet of eavestrough. Detached homes and those with complex rooflines (valleys, dormers, multiple levels) run more.
Key cost variables:
- Profile size: 5" aluminum is standard. 6" aluminum adds roughly $1.50–$3.00 per linear foot but handles significantly more water — a meaningful spec for GTA homes with large, steep, or tree-adjacent rooflines.
- Downspout size: 2×3" downspouts are builder standard. 3×4" rectangular or 4" round downspouts are meaningfully better at moving volume, especially during the heavy summer convective rain events the GTA gets every year.
- Guards: Micro-mesh guards ($8–$20 per linear foot installed) significantly reduce cleaning frequency. Foam inserts are not recommended for Ontario climates — they trap debris and deteriorate.
- Soffit and fascia: If the existing fascia is rotting (very common on 1980s–1990s GTA homes), it needs replacement before new eavestrough goes on. Aluminum cladding over wood fascia runs $8–$15 per linear foot. Full wood replacement is more.
What proper slope and outlet placement look like
Eavestrough should slope toward downspout outlets at roughly 1/4" per 10 feet of run. Visible sagging means the hangers have failed or were spaced too far apart. A reputable installer uses hidden hangers at 24" centres maximum — not spikes, which work loose in freeze-thaw cycles.
Downspout outlets should be positioned to discharge away from the foundation — not onto a neighbour’s property, not into a window well, and not into a splash block that ends up directing water back toward the house. Extensions of at least 4–6 feet from the foundation are minimum in Toronto’s high water table areas.
Ice dams: the drainage fix is only half the answer
Ice dams form when heat escapes from the living space through the attic, melts snow on the roof mid-slope, and that water refreezes at the cold overhang above the eavestrough. Better eavestrough does not prevent ice dams. The real fix is: adequate attic insulation to the overhang, proper air-sealing to block heat escape, and sufficient attic ventilation to keep roof sheathing cold.
Read the full guide with images, explainers, and FAQs: blog.lfbuilders.ca/blog/eavestrough-gutter-guard-cost-guide-2026/
More from home.renovation.reviews
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- Related: Your Spring GTA Home Checklist: 8 Things to Check Before Calling a Contractor
- LF Builders — eavestrough, aluminum work, and exterior renovation in the GTA: lfbuilders.ca
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