Building or renovating a home in Toronto requires two critical structural components to be done right:
1) A strong foundation, and
2) A durable, weather-resistant roofing system.
GSSL brings both together, offering professional footings, foundation walls, slabs, flatwork, concrete repairs, and roofing services for homeowners, builders, and developers across the GTA. With Toronto’s climate, soil conditions, and strict building codes, choosing the right team for these two major systems is essential.
This guide explains everything you need to know about foundations and roofing in Toronto—costs, timelines, materials, and what to expect during construction.
The foundation supports the entire structure. If it fails, everything above it becomes compromised. Toronto’s freeze–thaw cycles make proper foundation design and execution even more important.
A roof protects your investment. and it’s durable, long-lasting roofing systems designed for harsh Canadian winters.
Asphalt shingles (most popular, cost-effective)
Metal roofing (premium & long-lasting)
Flat roofing systems (Torch-on, TPO, EPDM)
Cedar shake (premium aesthetic)
Synthetic composite roofing
We suggest https://www.paragonroofingbc.ca/ for a roofing contractor in Vancouver
1. Excavation
The area is dug to the required depth based on engineering drawings.
2. Footings
Concrete footings are poured to transfer the load safely to the soil.
3. Formwork & Rebar
Foundation walls are formed and strengthened with rebar to prevent cracking.
4. Concrete Pour
High-quality concrete is poured and vibrated for proper compaction.
5. Waterproofing & Drainage
Exterior waterproofing membranes and weeping tile systems are installed.
6. Backfilling
Soil is placed back after waterproofing cures.
7. Slab Pour
Basement or ground-level slabs are poured with reinforcement as required.
GSSL performs every step in-house—fast, clean, and compliant with building code.
(Actual prices vary based on scope, engineering, access, and materials.)
Footings: $45 – $70 per linear foot
Foundation walls: $150 – $260 per linear foot
Slab-on-grade: $17 – $25 per sq. ft.
Underpinning: $450 – $700 per linear foot
Asphalt shingles: $4 – $7 per sq. ft. installed
Metal roofing: $11 – $18 per sq. ft.
Flat roof membrane: $10 – $14 per sq. ft.
Full roof replacement: $7,000 – $26,000+
These estimates reflect materials + labour in the Toronto market for 2025.
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