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Corrugated Metal Roof Cost Calculator

Estimate 2026 Canadian corrugated metal roof installation cost by line item: 26-ga galvanized, 26-ga Galvalume, PVDF colour-coated, 24-ga heavy gauge, or corrugated polycarbonate, with tear-off, ice-and-water shield, synthetic underlayment, vented ridge, gable trim, valley flashing, capped side-lap screws, drip edge, municipal permit and disposal. Real 2026 contractor rates per CRCA and NBC 9.26.

Corrugated Metal Roof Cost Calculator

2026 Canadian corrugated metal roof installation cost by line item — 26-gauge galvanized, 26-gauge Galvalume, colour-coated PVDF, 24-gauge heavy gauge, or corrugated polycarbonate. Includes tear-off, ice-and-water shield at eaves, synthetic underlayment, vented ridge cap, gable / barge trim, valley flashing, capped side-lap screws, drip edge, permit and disposal. Real 2026 contractor rates per CRCA and NBC 9.26.

Estimated corrugated metal roof cost
$19,084
Range: $16,221 – $22,901
panel + tear-off + ice-shield + underlay + ridge + barge + valley + fasteners + drip + add-ons
Panel installed
$11,000
Tear-off
$3,410
Ice-shield
$0
Underlay
$920
Vented ridge
$696
Barge trim
$408
Valley flashing
$500
Fasteners
$1,450
Drip edge
$200

What this calculator estimates

This calculator gives you a line-by-line installed 2026 Canadian price for a corrugated metal roof — whether you are re-roofing a farmhouse in southern Ontario, a Prairie home in Saskatchewan, a cottage in Muskoka, a heritage rural property in Atlantic Canada, or a new outbuilding on a hobby farm. It follows the line-item structure CRCA member roofers use on real quotes:

  • Panel material — 26-ga galvanized G90, 26-ga Galvalume, colour-coated PVDF Kynar 500, 24-ga heavy Galvalume Plus, or polycarbonate (installed)
  • Tear-off — removing the existing asphalt shingles, cedar shake, tile, or rusted metal down to the deck or strapping
  • Ice-and-water shield — self-adhered membrane at eaves (NBC 9.26.5) and in all valleys
  • Synthetic underlayment — on the balance of the deck (skip for unheated open-purlin agricultural buildings)
  • Vented ridge cap — with profiled foam closure for attic ventilation through the corrugations
  • Gable / barge trim, valley flashing, capped Tek screw kit, drip edge — pre-formed flashings
  • Municipal permit, debris removal and landfill fee, and weekend premium

A CAD $400 minimum service-call floor applies in most Canadian markets — Ottawa, Hamilton, Calgary, Winnipeg, Saskatoon — because even a single sheet replacement requires a two-person crew with snips, ladder, and a small dumpster.

How to use it

  1. Enter roof area in square feet (Canadian metal industry standard). For a simple gable this is your wall footprint × 1.05 to 1.15. For a typical hipped suburban home it is 1.10 to 1.35x your living-area footprint depending on pitch.
  2. Pick panel material — 26-ga galvanized is the cheapest serviceable; 26-ga Galvalume the residential default; PVDF colour-coated for 30-year colour warranty; 24-ga heavy for heavy-snow and hail regions; polycarbonate for translucent porch and patio cover roofs.
  3. Set scope — spot repair (15% of area), partial replace (45%), or full re-roof (100%).
  4. Set storey count — single-storey 1.0x, two-storey 1.2x, three-storey 1.45x.
  5. Set access difficulty — easy (drive-up) 1.0x, moderate (rear garden) 1.1x, hard (no ladder access / lift needed) 1.3x.
  6. Enter ice-and-water shield area — typically 24 to 36 inches inboard of eaves (warm-wall line) plus all valleys. NBC 9.26.5 minimum.
  7. Enter linear feet of ridge, gable trim, valley flashing, side-lap Tek screw seam, and drip edge.
  8. Toggle tear-off, municipal permit, disposal, weekend premium and any extra labour hours.

Typical 2026 Canadian corrugated metal roof cost ranges

These ranges reflect 2026 nationwide pricing from the CRCA Quality Roofs Cost Index, IDEAL Roofing 2026 published trade pricing, Vicwest and AG Panel 2026 catalogues, HomeStars and Renomii Q1 2026 quotes from Ottawa, Hamilton, Calgary, Winnipeg, and Saskatoon.

Corrugated metal system (2,000 sq ft, single-storey, moderate access)2026 installed price (CAD)
26-ga galvanized G90, full re-roof with tear-off + ice-shield + underlay$7,500 – $13,500
26-ga Galvalume, full re-roof$9,500 – $17,000
Colour-coated PVDF Kynar 500 26-ga, full re-roof$15,000 – $24,000
24-ga heavy Galvalume Plus, full re-roof$13,500 – $21,500
Polycarbonate (Suntuf, Palram) — porch / patio cover 300 sqft$1,100 – $2,300
Spot panel replacement (15%)$1,700 – $3,300
Re-screw existing panels (replace all Tek screws)$1.15 – $2.10 per sq ft
Re-flashing only (ridge + gable + valley + drip)$2,400 – $5,200
Open-purlin agricultural install (no deck, no underlay)subtract $2.20 – $4.50 per sq ft
Heavy-snow upgrade (24-ga, 16-inch strapping, snow rail)add 25 – 40%

Add 20 percent for two-storey, 45 percent for three-storey or higher. Add 10 to 30 percent for moderate to hard access. Add 8 to 15 percent for the 24-ga heavy gauge over standard 26-ga.

Cost drivers

Panel material and gauge. 26-ga Galvalume is the Canadian volume product. Bare G90 galvanized drops the panel cost about 18 percent. PVDF colour-coated adds 50 to 70 percent over bare Galvalume for the resin and bake-finish process. 24-ga heavy Galvalume Plus adds 35 to 50 percent for the thicker steel.

Panel profile. AG-panel / R-panel (3/4-inch corrugation at 36-inch coverage) is the agricultural and rural residential default. Tuff-Rib (Vicwest) and Master Rib (Vicwest) are stiffer profiles for open-strapping spans up to 5 ft. The traditional round corrugated (Quebec, Atlantic Canada heritage) is harder to source — add 10 to 20 percent over standard.

Pitch and complexity. A 4/12 to 8/12 pitch is straightforward. Above 8/12, fall protection slows the crew by 20 to 35 percent. Below 4/12 needs self-adhered bituminous membrane across the whole deck and butyl tape in every side-lap — add 15 to 25 percent. NBC 9.26 sets the minimum slope for corrugated metal at 1:6 (about 2/12) with full sealed laps. Cut-up roofs with dormers, valleys, and skylights add 20 to 40 percent.

Snow load. Climate Zone 7 and 8 snow load specifications (BC interior, Quebec North Shore, Newfoundland, Yukon, NWT) require 24-ga, 16-inch strapping, and a continuous snow rail at the eaves. Heavy-snow upgrade adds 25 to 40 percent over the inland standard. Get a structural review for any roof above ground snow load 2.5 kPa.

Tear-off scope. Asphalt shingle is fast tear-off. Existing cedar shake or 1x4 board sheathing under shake is slower and may require partial re-decking. Existing rusted metal strip-off is the cheapest of all. Allow CAD $1.55 per sq ft for typical tear-off plus a higher disposal allocation in Atlantic Canada and the North where landfill fees are higher.

Coastal corrosion. Within one mile of saltwater (Atlantic Canada, BC coast), use Galvalume Plus or aluminum panels with stainless Tek screws and PVDF topcoat — bare G90 galvanized rusts within 8 years on the coast. Within 5 miles, use Galvalume with PVDF topcoat and HDG fasteners. Coastal premium adds 10 to 18 percent.

French-language documentation. In Quebec, the Régie du bâtiment du Québec requires installation manuals and warranty documentation in French — most US suppliers (ABC, Best Buy Metals) don’t satisfy this, so Canadian-source suppliers (IDEAL Roofing, Vicwest, Westform) are preferred. No price premium but it constrains the supplier list.

Canadian code, standards, and certifications

  • NBC 2020 Section 9.26 — Roofing for Part 9 residential buildings (minimum pitch, ice-shield, fastening, underlayment).
  • CSA S6-19 Annex A — Ground snow load mapping for structural design.
  • CSA A123.21 / CSA A123.51 — Asphalt shingle and underlayment performance standards (cross-referenced for ice-shield).
  • ASTM A792 / A792M — Galvalume (55% Al-Zn) sheet standard (referenced by CSA).
  • ASTM A653 — Galvanized (G90) sheet standard for bare zinc-coated.
  • ASTM E1592 / UL 580 — Uplift resistance testing.
  • UL 790 / ASTM E108 — Fire test of roof coverings (Class A = highest).
  • UL 2218 — Impact resistance classification (Class 4 = highest, hail-resistant — important for southern Alberta).
  • CRCA Roofing Specifications Manual (2024) — the Canadian trade reference.
  • Régie du bâtiment du Québec — licensed contractor required for all roofing work over CAD $5,000 in Quebec.

Use a CRCA-member or CASMA-certified contractor for any residential corrugated project — the trade certifications include workmanship warranty programs and access to the manufacturer’s longer paint and substrate warranties.

Diagnostic step-by-step before quoting

  1. Walk the existing deck before tear-off — pop two attic-access panels and inspect the sheathing. Soft, dark, or delaminating OSB / plywood means the deck becomes part of the job. Add CAD $1.80 to $3.20 per sq ft for partial re-decking.
  2. Verify the existing pitch with a digital level or pitch app — pitch under 4/12 means whole-deck bituminous membrane and changes the bid.
  3. Inspect attic insulation depth — R-50 minimum for Zones 6-7, R-60 for Zone 8. If undersized, this should be uprated as part of the re-roof project — adds CAD $1.50 to $3.50 per sq ft for blown cellulose top-up.
  4. Check ground snow load for the address — CSA S6-19 Annex A is the source. Above 2.5 kPa, get a structural review.
  5. Sample colour at the roof — Kynar 500 PVDF in matte finishes (Slate Grey, Charcoal, Bone White, Burnished Slate) holds up better in Canadian sun and snow than glossy darker colours that fade. Order chip samples and view morning and afternoon.
  6. Get three CRCA or CASMA-member bids that itemize panel, ice-shield, underlay, ridge, gable, valley, screw kit, drip, structural work, permit, and disposal as separate line items.

Avoiding scams and overcharging

Door-knockers after winter storms often pitch corrugated metal at homeowners as a “lifetime” roof — it is not. Corrugated is a 30 to 45 year roof at best in Canadian climates, less in coastal Atlantic Canada, and the EPDM washers degrade in 12 to 20 years. Red flags include: 29-gauge sold as 26-gauge (insist on the manufacturer’s coil sticker showing the gauge and AZ50 / AZ55 Galvalume coating weight); no CRCA or CASMA membership; no Régie du bâtiment du Québec licence (for Quebec work); refusal to itemize the Tek screw kit separately; no manufacturer’s name on the panel (IDEAL Roofing, Vicwest, Agway Metals, AG Panel, Westform are the legitimate Canadian suppliers); and any contractor proposing to skip ice-and-water shield to save money — NBC 9.26.5 requires it and skipping voids the assembly warranty. Reputable corrugated installers in 2026 carry CAD $2M general liability minimum, are CRCA members, and will gladly share the panel manufacturer’s published installation manual.

Sources: 2026 CRCA Quality Roofs Cost Index; IDEAL Roofing 2026 published trade pricing; Vicwest, AG Panel, Westform, Agway Metals 2026 catalogues; NBC 2020 Section 9.26; CSA S6-19 Annex A; CSA A123.21 / A123.51; ASTM A792 / A653 / E1592; UL 580 / UL 790 / UL 2218; CRCA Roofing Specifications Manual 2024; Régie du bâtiment du Québec licensing database; HomeStars and Renomii Q1 2026 quotes from Ottawa, Hamilton, Calgary, Winnipeg, and Saskatoon.

Frequently asked questions

How much does a corrugated metal roof cost in 2026 in Canada?
Most Canadian homeowners and farm owners pay CAD $4 to $9 per sq ft installed for a 26-gauge Galvalume corrugated metal roof in 2026, all-in with tear-off, ice-and-water shield at eaves, synthetic underlayment, vented ridge cap, gable / barge trim, valley flashing, capped Tek screws and disposal. A 2,000 sq ft single-storey re-roof in 26-ga Galvalume lands around CAD $9,500 to $17,000. Bare 26-ga galvanized G90 is CAD $7,500 to $13,500. Colour-coated PVDF Kynar 500 26-ga is CAD $15,000 to $24,000. Heavier 24-ga Galvalume Plus runs CAD $13,500 to $21,500. Corrugated polycarbonate for porches and patio covers is CAD $1,100 to $2,300 for a 300 sq ft project. Source: 2026 CRCA Quality Roofs Cost Index, IDEAL Roofing and Vicwest 2026 published trade pricing, HomeStars and Renomii Q1 2026 quotes from Ottawa, Hamilton, Calgary, Winnipeg, and Saskatoon.
What is the difference between corrugated metal and standing seam in Canada?
Corrugated metal (R-panel, AG-panel, Tuff-Rib, Master Rib) is an exposed-fastener system — Tek screws with EPDM washers go through the panel face into the deck or strapping. Standing seam (Vicwest Slim Seam, Westform Vertikal, IDEAL Heritage) is concealed-fastener with raised vertical seams. Functionally: corrugated costs 30 to 50 percent less installed, lasts 25 to 40 years before EPDM washer degradation, and is the right product for farms, prairie outbuildings, cottages, and rural homes on a budget. Standing seam costs more, lasts 50 years, and is the urban residential premium. Both shed snow well, but corrugated has the texture to retain some snow load — useful in heavy snow regions where snow rails are not desired.
How does a corrugated metal roof perform in Canadian winters?
Very well, on three conditions. First, a continuous ice-and-water shield must be installed at eaves to at least 24 inches inboard of the warm-wall line (NBC 9.26.5) and in every valley. Without this, ice damming will drive meltwater up the panel under the EPDM washers and into the assembly. Second, the attic must be properly insulated and ventilated (R-50 minimum in Climate Zones 6-7, R-60 in Zone 8 and Yukon / NWT) — undersized insulation causes melt-freeze cycling that destroys the screw washers in 5 to 10 years instead of 15 to 25. Third, sufficient roof-to-wall venting through the corrugations via a vented ridge cap. With these three boxes ticked, 26-ga Galvalume in inland Ontario, Alberta, Saskatchewan and Manitoba routinely makes 35 to 45 years.
Do I need a municipal building permit for a corrugated metal re-roof?
In most Canadian municipalities, a like-for-like re-roof of a detached dwelling (same material, no structural change) does not require a permit but does require a Building Official notification — typical $80 to $180 fee. A material change (asphalt to metal, or tile to metal) does require a building permit at $250 to $600 depending on municipality, because the new dead load and snow retention behaviour need engineering review. Detached agricultural buildings under 600 sq ft on a rural property generally need no permit. Always check with your municipal building department — Toronto, Vancouver, Montreal, Calgary and Edmonton each have different thresholds. Quebec requires a Régie du bâtiment du Québec licensed contractor for all roofing work over CAD $5,000.
What is the best gauge for a Canadian residential corrugated metal roof?
26-gauge (0.018 inch) is the residential and small farm standard — stocked by Vicwest, IDEAL Roofing, Agway Metals, AG Panel and most lumberyards. 29-gauge (0.014 inch) is the budget agricultural gauge — fine for hayshed and grain bin roofs but dents from ladder traffic and won't survive ice scoop or shovel use in winter. 24-gauge Galvalume Plus (0.024 inch) is the heavy gauge for heavy-snow regions (BC interior, Atlantic Canada, Quebec North Shore, Newfoundland), hail-prone Prairie areas (southern Alberta hail alley around Calgary, Red Deer and Lethbridge), and any project where snow load over 2.5 kPa is expected. Step up from 26 to 24-ga for about 35 to 50 percent more material cost.
Open-purlin / strapping vs solid deck — what works in Canadian winter?
Solid-deck installation (7/16 inch OSB or 5/8 inch CDX plywood + synthetic underlayment + ice-shield at eaves and valleys) is the only Canadian residential winter-rated assembly. NBC 9.26 essentially requires it for any habitable space. Open-purlin installation (panels screwed directly into 2x4 strapping on 24-inch centres) is used only for agricultural buildings, sheds, garages and unheated shelters. The saving is CAD $2.20 to $4.50 per sq ft but you cannot insulate properly without a deck, condensation will drip onto stored equipment, and the roof will not pass building inspection for any habitable conversion later. For residential — always solid-deck.
How do snow loads affect corrugated metal roof spec in Canada?
NBC 2020 Part 4 specifies ground snow load by region — Calgary 1.0 kPa, Toronto 1.0 kPa, Montreal 2.2 kPa, Quebec City 3.2 kPa, Halifax 1.5 kPa, St John's 3.2 kPa, Whitehorse 2.0 kPa, Iqaluit 4.0 kPa. For ground snow load above 2.0 kPa, standard 26-ga corrugated on 24-inch purlin spacing is undersized — use 26-ga on 16-inch spacing, or 24-ga Galvalume Plus on 24-inch spacing, or add a snow rail at the eaves. In heavy snow (Quebec North Shore, Newfoundland, Whitehorse) the engineer of record will typically specify 24-ga with explicit snow load calculation per CSA S6-19 Annex A. Get a structural review for any roof in Climate Zone 7B or 8 — the snow load math is not optional.
What is the noise level of a corrugated metal roof in Canada — and can it be insulated?
On a solid-deck installation with synthetic underlayment and standard attic insulation (R-50 cellulose or fibreglass) the noise is comparable to an asphalt shingle roof — 35 to 50 dB inside during heavy rain. Adding a continuous 2-inch polyiso rigid foam (Demilec, Owens Corning Foamular) under the panels drops noise by 8 to 12 dB and brings the R-value up to R-15 above the deck — total assembly R-65 with R-50 attic insulation. This is the high-performance Canadian winter assembly. For unfinished spaces (porches, drive sheds, carports) the rain noise on bare open-purlin metal is part of the character but should not be specified for any habitable room.

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